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The Numbers Stations Analyzed, Discussed

GMontag wrote to mention a Washington Post article about the always-intriguing 'number' radio broadcasts. The numbers stations, as they are known, are 'hiding in plain sight' spycraft. Random digits broadcast at little-used frequencies are known to be intelligence agencies broadcasting their secrets in encrypted form. The Post article gives a nice run-down on the truth behind the transmissions, and touches a bit on the odd community that has grown fascinated by them. From the article: "On 6840 kHz, you may hear a voice reading groups of letters. That's a station nicknamed 'E10,' thought to be Israel's Mossad intelligence. Chris Smolinski runs SpyNumbers.com and the 'Spooks' e-mail list, where 'number stations' hobbyists log hundreds of shortwave messages transmitted every month. 'It's like a puzzle. They're mystery stations,' explained Smolinski, who has tracked the spy broadcasts for 30 years." This article made me recall a great All Things Considered story from a few years back about Akin Fernandez's 'Numbers' CD, a CD compilation of some of the most interesting strings of randomly read numbers reaching out across the airwaves.

224 comments

  1. 1258965 by TechnoLust · · Score: 4, Informative

    1258965

    1258965

    1258965

    --
    "Da ist ein Technölüst in mein Unterpanten!"
    1. Re:1258965 by Servo · · Score: 1

      5 035 860

      --
      A slip of the foot you may soon recover, but a slip of the tongue you may never get over. -Benjamin Franklin
    2. Re:1258965 by wurp · · Score: 0, Offtopic

      Unless my crappy college german is much mistaken, "There is" is "Es gibt" in german, not "Da ist".

      Of course, often the very charm of "Tengo gato loco in mis pantalones" style sayings is the wrongness of them, but I still can't resist pointing it out...

    3. Re:1258965 by Eudial · · Score: 1

      1258965

      1258965

      1258965


      19574811 227958 31819326 you insensitive clod!
      --
      GAAH! MY PRINTER IS ON FIRE!!! PUT IT OUT! PUT IT OUT!
    4. Re:1258965 by quokkapox · · Score: 5, Funny

      In Soviet Russia, this would be modded "Informative".

      --
      it's a blue bright blue Saturday hey hey
    5. Re:1258965 by nmb3000 · · Score: 4, Funny

      8675309

      --
      "What do you despise? By this are you truly known." --Princess Irulan, Manual of Muad'Dib
      /)
    6. Re:1258965 by Anonymous Coward · · Score: 0

      understood. 6120 8396 8227 9241

    7. Re:1258965 by j00r0m4nc3r · · Score: 2, Funny

      You have just illegally transmitted the first 10 bytes of Britney Spears' new album. The RIAA will be contacting you shortly.

    8. Re:1258965 by redalien · · Score: 1

      Not to mention that two of the words don't exist, and even if they did they'd have to have some very odd irregularities for the sentence to make sense.


      Oh crap, I mentioned it. Sorry guys.

    9. Re:1258965 by Mozk · · Score: 4, Insightful

      Oh my god... The single funniest and most fitting Soviet Russia joke I have ever seen. People looked at me weird because I was laughing at a computer.

      --
      No existe.
    10. Re:1258965 by Anonymous Coward · · Score: 0

      303 862 681
      101 287 560
      50 643 780.2

    11. Re:1258965 by Servo · · Score: 4, Funny

      42

      --
      A slip of the foot you may soon recover, but a slip of the tongue you may never get over. -Benjamin Franklin
    12. Re:1258965 by Anonymous Coward · · Score: 0

      1330464512
      5719296
      310333818112
      284630011392
      19220920372365824 22331378893145088

      0xDEADBEEF = 3735928559
      DEAD = 0x4445414400 = 293219681280 ***

    13. Re:1258965 by Anonymous Coward · · Score: 0

      Jenny's not in right now, but if you'll wait while your call is traced, she'll eliminate you as soon as she can pencil it into her busy schedule.

    14. Re:1258965 by Profane+MuthaFucka · · Score: 1

      69
      8008
      5417
      5318008

      Pervert codez.

      --
      Fascism trolls keeping me up every night. When I starts a preachin', he HITS ME WITH HIS REICH!
    15. Re:1258965 by Anonymous Coward · · Score: 2, Informative

      Depends on how literal (or colloquial) or want to be. Literally, "es gibt" means "it gives", which would be understood by almost any German-English translator as "there is". "Da ist" literally means "there is", but you won't hear that very often, in my experience, unless you're talking to a very small child. Context has a lot to do with it. "Da steht" (there stands) would also substitute in some situations.

    16. Re:1258965 by qbwiz · · Score: 2, Funny

      8008? I always knew that Intel was filled with perverts, but finally I have proof....

      --
      Ewige Blumenkraft.
    17. Re:1258965 by Digital+Vomit · · Score: 1

      If he doesn't hang himself out of shame first.

      --
      Modern copyright is theft of culture from everyone and it retards the progress of the useful arts and sciences.
    18. Re:1258965 by drauh · · Score: 1

      5318008

      --
      This is a tautology.
    19. Re:1258965 by Anonymous Coward · · Score: 0

      Don't forget that the first Intel processors were explicitly designed for calculators... It would be more incriminating if they had named it 5318008, though.

    20. Re:1258965 by Anonymous Coward · · Score: 0

      Hey, why not? You know your computer laughs at you all the time...

      or at least mine laughs at me...

      (sigh)

  2. Slash has its own numbers station by LiquidCoooled · · Score: 4, Interesting

    It was discussed on slash previously in the following article:

    Numbers Stations Move From Shortwave To VoIP.

    --
    liqbase :: faster than paper
  3. Porcupine tree by stoneymonster · · Score: 1

    I first heard one of these broadcasts at the end of 'Even Less' by Porcupine Tree. Very weird stuff.

    -C

    1. Re:Porcupine tree by Watson+Ladd · · Score: 1

      How did you tell that the song was over?

      --
      Inventions have long since reached their limit, and I see no hope for further development.-- Frontinus, 1st cent. AD
    2. Re:Porcupine tree by MillionthMonkey · · Score: 1

      I first heard one of these broadcasts at the end of 'Even Less' by Porcupine Tree. Very weird stuff.

      Makes you wonder who will come out of the woodwork to sue them for the copyright violation.

      © 2006 MillionthMonkey

    3. Re:Porcupine tree by justinlindh · · Score: 1

      Made even slightly more applicable to Slashdot as Steven Wilson, lead of Porcupine Tree, was a computer programmer before becoming a musician. 'Even Less' is track 1 off of 'Stupid Dream', in case anybody wants to check it out. They even play the numbers during their concerts. I'm kind of a PT junkie, in case you couldn't tell.

    4. Re:Porcupine tree by Anonymous Coward · · Score: 0

      Check out the song Gyroscope by Boards of Canada. It also has samples of this nature. Creepiest. Song. Ever.

    5. Re:Porcupine tree by niktemadur · · Score: 1

      Here's another one: "Reservations", off the Wilco album "Yankee Hotel Foxtrot". In fact, the numbers station sampled repeats the words "Yanke Hotel Foxtrot" over and over again.

      For my money, the most disturbing numbers station messages are:
      1. The Swedish Rhapsody, with a music box-style version of the musical piece, followed by a little girls' voice that sounds positively robotic.
      2. "Nancy Adam Susan" over and over again.
      3. The High Pitch Polytone, although this one has no numbers being transmitted.

      I found the most famous compilation of numbers stations, The Conet Project, on an online store under the tag aural terror and dammit, that's not too far from nailing it right in the bullseye. There was one station that broadcasted a single tone being repeated for something like thirty years, then one day in the early nineties suddenly transmitted numbers for a couple of minutes, and then it was back to the single tone ever since. Firty five years, and one single two minute burst of numbers! Holy cow, that must have been quite an important message.

      In criminology, the perfect crime consists of the police not being able to identify three things:
      1. The identity of the victim.
      2. The identity of the perpetrator.
      3. The motive for the murder.

      Similarly, the three main pieces of data for numbers stations remain a mystery to the general population:
      1. The identity of the broadcaster.
      2. The identity of the recepient.
      3. The content of the message.
      There you have it, numbers stations are a perfect mystery.

      There is definitely a sinister undercurrent in these stations, but they are also one of the greatest examples of accidental art in history. I mean, the most avant-garde artists in the world could not have come up with something like this in their wildest and most ambitious dreams.

      Good news, everybody: Irdial has made available the full Conet Project audio files in low-fi mp3, so you can jump to their archives page and start downloading - http://irdial.hyperreal.org/the%20conet%20project/ . Have fun while scared sh*tless, in a ghost-stories-by-the-campfire sort of way.

      --
      Lil' Thindime, lilting a lacrimose lament, krashes the kwaint konfines of Kokonino Kounty
  4. IP Addresses by inKubus · · Score: 1

    What if they were IP addresses?

    207 46 225 60 207 46 18 30 ;)

    --
    Cool! Amazing Toys.
    1. Re:IP Addresses by Rosco+P.+Coltrane · · Score: 4, Funny

      Actually no, it's spies reading the content of a suspicious #chatzone IRC log file, only they don't quite get it. See for example this transcript:


      C0016UY: 1337641: 69?
      1337641: 637 1057!

      --
      "A door is what a dog is perpetually on the wrong side of" - Ogden Nash
    2. Re:IP Addresses by Watson+Ladd · · Score: 1

      What's 1057?

      --
      Inventions have long since reached their limit, and I see no hope for further development.-- Frontinus, 1st cent. AD
    3. Re:IP Addresses by Anonymous Coward · · Score: 1, Informative

      lost

    4. Re:IP Addresses by brain159 · · Score: 1

      I just lost the game, you insensitive clod!

    5. Re:IP Addresses by Xaroth · · Score: 5, Funny

      A translation for the weak of leet:

      A fine, upstanding gentleman: Dearest, skilled lady... wouldst thou join me in mine bedchambers for some chaste frolicking?
      Skilled lady: Alas! No, I must not! For thou art neither truly updstanding, nor the gentleman thou claim'st to be. Now, leav'st me be posthaste!

    6. Re:IP Addresses by Dachannien · · Score: 1

      Actually, if you type the numbers they read out into your calculator and turn it upside down, it spells out "BOOBS".

    7. Re:IP Addresses by mrogers · · Score: 5, Funny
      What's 1057?
      The joke. On you.
    8. Re:IP Addresses by Mixel · · Score: 1

      damn you.

    9. Re:IP Addresses by magicchex · · Score: 1

      That is a very clever answer. And funny.

      --
      How many fulltime jobs can one man have?
    10. Re:IP Addresses by robi2106 · · Score: 1

      Ahahahah that is a good one. Made better by the fact that I had to read it a few times before I got it.

      jason

    11. Re:IP Addresses by Anonymous Coward · · Score: 0

      For those who are not fluent in 1337:

      C0016UY: 1337641: 69?
        Coolguy: leetgal 69? (sex position 69)

      1337641: 637 1057!
      leetgal: get lost!

  5. I've picked these up on short wave by andy314159pi · · Score: 5, Interesting

    If you have a cheap short wave radio, even a "radio shack" one, you can pick up voice audio coded messages to spies that the CIA sends to agents. You will only find them by pure chance, but I have managed to find them and record them but I would say that for every 6 or 8 months of listening to short wave radio I will hear only 1 of these broadcasts. It's usually the same female voice. It's great fun when you find one, you feel like you hit the lottery.

    1. Re:I've picked these up on short wave by ScrewMaster · · Score: 1

      Yes, well ... remember what happened when the fat guy in Lost played the numbers he got from the guy in the psycho ward who heard them on the radio. Well, yeah, he won 68 million dollars or some such, but it was all downhill from there.

      --
      The higher the technology, the sharper that two-edged sword.
    2. Re:I've picked these up on short wave by The+Living+Fractal · · Score: 1

      I guess it's just a saying, but I take it you have never really hit the lottery? :)

      TLF

      --
      I do not respond to cowards. Especially anonymous ones.
    3. Re:I've picked these up on short wave by andy314159pi · · Score: 1

      I'm not sure what you are talking about; but yes I understand your cynicism over what I reported. It does seem unlikely but what I reported is accurate. The NPR story is how I figured out where the messages might be coming from.

    4. Re:I've picked these up on short wave by Konster · · Score: 4, Funny

      I won the lottery.

      Twice.

      I spent a lot on booze and whores.

      I wasted the rest.

    5. Re:I've picked these up on short wave by lowe0 · · Score: 5, Funny

      Dude, a slashdotter said he heard a female voice. That's pretty much the same as winning the lottery around here.

    6. Re:I've picked these up on short wave by Anonymous Coward · · Score: 0
      Give Georgie Best his credit for that expression.

      Bless him.

    7. Re:I've picked these up on short wave by titzandkunt · · Score: 3, Funny


      And if you're going to steal, get it right! George's wording was far better:

      "I spent a lot of money on booze, birds and fast cars. The rest I just squandered."

      See? That word: squandered. Much, much better than wasted. You can waste anything but only riches can be squandered. And you forgot the fast cars. Unforgivable.

      --
      Political language ... is designed to make lies sound truthful and murder respectable...
    8. Re:I've picked these up on short wave by ScrewMaster · · Score: 1

      I'm not being cynical, I'm being facetious. I don't know enough about the actual topic to be cynical. I was referring to one of the first-season episodes of the TV show Lost.

      --
      The higher the technology, the sharper that two-edged sword.
    9. Re:I've picked these up on short wave by Svartormr · · Score: 1
      Dude, a slashdotter said he heard a female voice.
      ...a computer-generated female voice...
    10. Re:I've picked these up on short wave by Havenwar · · Score: 1

      so, basically, the voice of a female you can program to say whatever you want, do whatever you want, or even - here's the real winner - to shut up...

      Not to mention, slashdotters can relate better to a computer generated female voice - at least then it is within the same species.

    11. Re:I've picked these up on short wave by Skuld-Chan · · Score: 1

      On the low end of the 30m band there's two stations broadcasting numbers pretty much all day long - I want to say 9.8 mhz? Of course you have to know morse code :).

    12. Re:I've picked these up on short wave by niktemadur · · Score: 1

      You will only find them by pure chance, but I have managed to find them and record them but I would say that for every 6 or 8 months of listening to short wave radio I will hear only 1 of these broadcasts.

      Some years ago, while scanning the shortwave dial, I bumped into one of these without knowing what it was. I found it so intriguing that I decided on the spot to write down the numbers the girl was transmitting. Even my cats had their ears pricked up, not unlike antennas. Since that fateful night, we have remained dormant, awaiting further instructions...

      --
      Lil' Thindime, lilting a lacrimose lament, krashes the kwaint konfines of Kokonino Kounty
  6. 4 8 15 16 23 42 by Anonymous Coward · · Score: 0

    4 8 15 16 23 42

    1. Re:4 8 15 16 23 42 by currivan · · Score: 3, Funny

      Great, now we have to post this every 108 minutes.

    2. Re:4 8 15 16 23 42 by rikkards · · Score: 1
      Great, now we have to post this every 108 minutes.


      Could have been worse. It could have been every 108 posts. Try to get that right
    3. Re:4 8 15 16 23 42 by StikyPad · · Score: 1

      we have to post this every 108 minutes.

      Don't worry, nothing will happen if we don't.

  7. There was a BBC radio programme about this... by terrencefw · · Score: 4, Informative

    There was a BBC radio programme about this a few months ago:

    http://jamesholden.net/2005/04/23/the-lincolnshire -poacher/

    --
    Like tinyurl, but one letter less! http://qurl.co.uk/
    1. Re:There was a BBC radio programme about this... by Angostura · · Score: 1

      Direct link to the BBC programme is here. And very good it is too.

    2. Re:There was a BBC radio programme about this... by Angostura · · Score: 1

      Hmmm, looks like the BBC has screwed up the link.

  8. Why not just use spam by Anonymous Coward · · Score: 0

    Coded spam must be easier to send/receive.

    1. Re:Why not just use spam by Anonymous Coward · · Score: 0

      With SPAM you need a computer. The article talked about how they can drop operatives into a 3rd world hell hole and they can construct a shortwave radio out of tinfoil, duct tape, and other locally obtainable parts.

    2. Re:Why not just use spam by ettlz · · Score: 1

      Perhaps they do use spam. I've received a number of cryptic junk e-mails recently — not selling anything, just (mis)quoting Shakespeare or some random numbers. Though I figure it's more likely related to criminality than covert intelligence.

    3. Re:Why not just use spam by slicenglide · · Score: 2, Informative

      That's actually spammer's trying to mess with any bayesian filtering you have so that more of their viagra ads get through.
      I've seen an article on it, here or on digg.
      -Interesting.

      --
      John Walsh once found me while looking for some other kid. He was not amused.
    4. Re:Why not just use spam by finalbroadcast · · Score: 1

      I've gotten a lot of one word emails and whatnot, still caught by spam filters. It is an intiguing idea though. Howver what is more likely is that spyign will take tactics from Al-Qaeda, encrypting messages inside images, and media files. In fact it would make sense if the entirety of U.S. intelligence operates through encoded message within Fox News broadcasts.

    5. Re:Why not just use spam by Anonymous Coward · · Score: 0

      That's not that bad an idea for sending covert messages. There's so much that it'd be hard to filter an actual encrypted message from some noise. Yet if that text would cross index to the key and form correct syntax, the reciever would be able to get his message with little suspicion.

      Also why the numbers? One would think that VOIP, geocached USB sticks, and using open wireless networks as drops/pickups for encrypted files would be more effective and specific.

      Also I haven't heard much in the way of numbers stations (no shortwave here), but does anyone know what that blipping is that can be found around 108 or so on FM? And no, it's not tied to noise from any computers or electronics in the house. What is that?

    6. Re:Why not just use spam by ettlz · · Score: 1
      In fact it would make sense if the entirety of U.S. intelligence operates through encoded message within Fox News broadcasts.
      That ROT-26 works wonders, doesn't it?!
  9. Oooo, just heard a broadcast by neuro.slug · · Score: 1, Funny

    Radio: 1... 2... 3... 4... 5!

    1 2 3 4 5? That's amazing! I've got the same combination on my luggage!

    1. Re:Oooo, just heard a broadcast by Bryansix · · Score: 1

      You and President Skroob.

    2. Re:Oooo, just heard a broadcast by monotony · · Score: 1

      i wish i had modpoints left, i think it's funnier than a 2.

      i guess not everybody enjoyed spaceballs =/

    3. Re:Oooo, just heard a broadcast by cthulhu11 · · Score: 0

      Funny ... you don't look Druish!

    4. Re:Oooo, just heard a broadcast by StikyPad · · Score: 1

      I've never heard a sequential one like that. The ones I hear are usually like "105.1" or "Hit Radio 97.5," and they just repeat over, and over, and over, with occasional "musical" interludes.

  10. free 4 cd album of number stations recordings by mr_angry · · Score: 1

    http://www.archive.org/details/ird059

    It's not music, it's numbers stations. You can take a listen at just a few mp3s to check what a number station sounds like.

    --
    100% of statistics are wrong.
  11. That explains it... by __aaclcg7560 · · Score: 2, Funny

    So the little voices I been hearing is from the spooks instead of the green little men. Maybe I been watching too much X-Files.

    1. Re:That explains it... by Anonymous Coward · · Score: 0

      Actually the voices you have been hearing are a hallucination caused by spores from underground roots that are simultaneously devouring you with their digestive acids. You are in reality beneath the earth being eaten by a giant plant. Wake up now! [computer screen melts into green goo.....]

    2. Re:That explains it... by Anonymous Coward · · Score: 0

      Nah, you just have an education as laid out by GWB.

  12. I suppose your questions have been answered... by bobdotorg · · Score: 1

    ... when you hear:

    Forty Two.

    --
    __ Someday, but not this morning, I'll finally learn to use the preview button.
    1. Re:I suppose your questions have been answered... by greenguy · · Score: 1

      What was that question again?

      --
      What if I do the same thing, and I do get different results?
    2. Re:I suppose your questions have been answered... by presearch · · Score: 1

      How many roads must a man walk down?

  13. Ob Penny Arcade by rlp · · Score: 1
    --
    [Insert pithy quote here]
  14. Shortwave by finalbroadcast · · Score: 5, Interesting

    As an avid Shortwave fan, there are less and less clear stations broadcasting to NA, as more and more world service broadcasts move to the Internet. (YEAH I'm talking about you BBC) I wonder how long until the only people who own shortwave radios are spies? Although propaganda stations are well worth the price of the radio. Listen to Cuba's hour loop of things we blame on the US today, and keep a straight face, I dare you.

    1. Re:Shortwave by andy314159pi · · Score: 2, Informative

      Ham radio builders and ham radio operators are very numerous and short wave will always be their domain.
      http://www.arrl.org/

    2. Re:Shortwave by AB3A · · Score: 1

      Thirty some years ago, when I first got my start as an amateur radio operator, I used to listen to the broadcasts from Radio Moscow. I too thought it was screamingly funny, for a while.

      Then, slowly, it began to dawn on me that these people really believed that stuff; and they had lots of nuclear ICBMs pointed right at the very city where I lived. It wasn't so funny any more.

      Radio Pyongyang still broadcasts that infamous cold war style. They're also equipping with nukes and ballistic missiles. Yes, it's strident. It's overfull with propaganda. And it's also the pulse of a country whose leaders seriously believe most of this is true.

      I listen to all sorts of international broadcasts. Very few are funny, unless they're trying to be.

      --
      Nearly fifty percent of all graduates come from the bottom half of the class!
    3. Re:Shortwave by dangitman · · Score: 1

      You should hear the crap the US sends out on the so-called "Clear Channel" stations. It would make Stalin blush.

      --
      ... and then they built the supercollider.
    4. Re:Shortwave by AB3A · · Score: 1

      I'm not sure what you mean by "Clear Channel Stations."

      However, if you want to develop an ear for real propaganda, try listening to news about the same event reported by various countries. You'll come to realize that there are no unbiased sources. Take the facts as you find them, match them against your own education and experience and form an opinion. Learn to recognize opinion from fact, and the importance of a reporter's viewpoints.

      It's all propaganda for somebody. It's up to you to decide where and how this stuff fits together.

      --
      Nearly fifty percent of all graduates come from the bottom half of the class!
    5. Re:Shortwave by willjohnson · · Score: 1

      You shouldn't have moved the quote. "Clear Channel" stations are the radio stations that the US intelligence community covertly broadcasts their propaganda the subliminal, liminal, and superliminal ways. It is often disguised in "song" form that sounds like the angst and/or sexually frustrated messages that fifteen year-old girls write in their diaries and "sung" by people that look like Abercrombie and Fitch models. In other words, pop stations.

    6. Re:Shortwave by finalbroadcast · · Score: 1

      Clever. Anyway Pyongyang may be a propaghanda machine, but like Mother Russia, and Cuba ecenomic collapse has rendered them into a paper tiger. Kim Jung Il hit the negotiating table because the nuclear weapon failed, he has no recourse. Well that and while our army may be stretched thin it would only take a few hours to turn all his lovely palaces into smoking ruins.

  15. locating by Anonymous Coward · · Score: 0

    shouldn't it be fairly straightforward to locate the origin of these transmissions?

    1. Re:locating by stonecypher · · Score: 1

      For those few still using actual radio, rather than just the broadcaster metaphor, sure. But, if you don't mind my asking, to what end? What good would it do you to know the site of origin?

      --
      StoneCypher is Full of BS
    2. Re:locating by Technician · · Score: 3, Informative

      shouldn't it be fairly straightforward to locate the origin of these transmissions?

      Yes. Automatic radio direction finding is common and was often used in the cold war. The spectrum is constantly monitored and when a new broadcast pops up, it is automaticaly DF'ed and logged. When several DF sites pickup the same broadcast, triangulation to the source is a simple task.

      Here is what a typical DF site looks like. Both the US and Russia have them.

      http://www1.shore.net/~mfoster/FLA_Wullen.htm

      --
      The truth shall set you free!
    3. Re:locating by grcumb · · Score: 1
      Automatic radio direction finding is common and was often used in the cold war.

      I thought SW radio would actually be a real challenge to trace, because of the way it's bounced off the ionosphere in order to defeat the curvature of the Earth. I'm not a radio technician, so please do tell me where I went wrong, if I did.

      --
      Crumb's Corollary: Never bring a knife to a bun fight.
    4. Re:locating by Hasai · · Score: 1

      That looks a lot like a AN/FLR-9 (http://www.fas.org/irp/program/collect/an-flr-9.h tm).

      The problem with DF-ing HF sites can be realized when you take a look at a FLR-9's or equivalent's antenna arrays: The wavelength of transmissions in the HF range are so long that a huge amount of space must be mapped-out between the receiving elements in order to produce sufficient phase-shift to generate an acceptably accurate line of bearing (LOB). This results in a very large, decidedly non-portable system that, in spite of its size and expense, will only generate a compass bearing, along which bearing the transmitter could be anywhere. You need a dead-minimum of TWO such facilities with AN/FLR-9s or the equivalent, geographically separated enough to create as close to a perpendicular LOB relative to the first as you can get. The width of a major continent will do nicely.

      Unfortunately, a two-LOB fix is rarely used on its own, as there is no way to estimate the reliability of the fix. For that, you need at least ONE MORE site, itself just as geographically dispersed from the others, in order to create what is called an Elliptical Error Probablility, or EEP. I'm not going to attempt the math, but in a nutshell it's a circle drawn on the map within which the target transmitter has a certain chance of being found. EEPs range in confidence from 50-90%, depending upon the number of LOBs that can be taken upon a given target. The more LOBs taken, the higher the confidence and the smaller the size of the circle (not a job for the impatient).

      Okay, now that's for your plain-vanilla HF transmitter with a plain-vanilla dipole antenna, sending a plain-vanilla carrier wave. Now, toss in a few rather interesting monkey-wrenches that folks can employ when they're not-too keen on being found: Troposcatter. Ionoscatter. Meteorscatter. Spread-spectrum. Hoppers. Things start getting fun at this point.

      So, yes; in a way DF-ing a HF broadcast is 'simple,' as long as you have the BOO-KOO BUCKS required to construct, man, and maintain such a string of facilities, as well as the inter-site telecommunications network required to coordinate all operations.

      NSA can do it. Me? Sorry; I already spent my lunch money for today. :)

      --

      Regards;

      Hasai

    5. Re:locating by Technician · · Score: 2, Interesting

      The ionosphere bounce is most often like a flat mirror in the sky much like seeing the sky reflected on a hot road in the desert (looks like water on the road). Even though the direction of the wave appears to be from a few degrees above the horizon, the azmith is not skewed much most of the time. Most of the CDAA antennas have the delays set to focus not on signals from the horizon, but from a few degrees above the horizon. The more antennas you have which are spread out increases the antenna apature and much of the drift gets averaged out providing a reasonably accurate line of bearing. The sky wave is dynamic. The longer a signal is present, the more samples can be integrated also increasing the accuracy. With many coordinated stations, the circle you get on the map that may contain the source of the transmission becomes quite small.

      I have done some HF amature radio hidden transmitter hunts in the 28 MHZ range. The bearing you get as you get close is pretty good. A couple guys working together sharing information can locate the final area very quickly. It is a lot of fun to see how many people you can beat to the hidden transmitter.

      --
      The truth shall set you free!
    6. Re:locating by lexarius · · Score: 1

      Not much, and that's kind of the point. At the expense of it being relatively easy to locate and listen to the signal, it is impossible to decipher the message or determine the recipients (if any) or their whereabouts.

    7. Re:locating by stonecypher · · Score: 1

      Grab a dictionary and look up "rhetorical question."

      --
      StoneCypher is Full of BS
  16. Source code by mcrbids · · Score: 5, Funny
    I don't know if I should do this - releasing secrets from the FBI like this commonly leads to life in Gitmo Bay - but information wants to be free!

    The "numbers" stations only exist to confuse people. On Wednesdays, we have "beer" day, where you are entitled to a beer from the cooler if the number 12725 comes out.

    So we had one day, last year, where somebody (I think it was the Chinese) hacked our main server, and made it broadcast 12725 continuously all day. So there we were, plastered out of our mind, when 270 Lbs of fissionable material was stolen from our floor. The investigation is due to be completed sometime around 2021 - we don't talk about that very much.

    Anyway, here's the source code:

    #! /bin/sh
    cat /dev/urandom > /dev/bcast;
    Information wants to be free!
    --
    I have no problem with your religion until you decide it's reason to deprive others of the truth.
  17. Neat by Perseid · · Score: 2, Interesting

    I remember when I was 12 or so and heard one of these for the first time. A woman reading numbers in Spanish. Damned if I didn't feel like James Bond sitting there listening to it. I still have that radio, too. Too bad it doesn't pick up anything besides evangelical stations now. Yes, technology has advanced and the world has moved on. So have I. I accept that. But there was a certain thrill of finding that clandestine guerrilla propaganda station that just can't be replaced with web surfing.

  18. Ad revenue by Kennric · · Score: 3, Interesting

    With these stations becoming so popular, isn't it time to sell ads? After all, spy agencies can always use the extra cash, and the people who listen to these things probably constitute a solid geek demographic.

    Or worse:

    1) Create personal numbers station with especially intriguing sequences to draw audience
    2) Sell ads on your personal number station
    3) Profit! ... why do I feel like I've missed a step there?

    1. Re:Ad revenue by xs650 · · Score: 2, Insightful

      You missed numbers porn

    2. Re:Ad revenue by ettlz · · Score: 1

      I swear, one of these days I'm going to set up a premium-rate phone number that just spits back random numbers.

  19. Interesting but moot by Anonymous Coward · · Score: 0

    The big boys can afford one time pads. Transmit only what is really important to decrease the amount of codes required. A little piece of paper carried by operative is reliable. Forget the spy movies and gadgets. Listen to the radio, know what parts to XOR on paper (or whatever) and you got the data. It's 100% moot that people record those number series since they have absolutely zero chance ever revealing a thing.

    1. Re:Interesting but moot by Anonymous Coward · · Score: 0
      The NSA has decoded one-time pads before though. Look up Venona.

      Used properly, a One-time-pad is perfectly and provably secure. Used improperly and it almost trivial to break.

      So in Venona, clandestine operators were out in the field so long that they ran out of pad, so they reused it. I wouldn't know how to hazard a guess as to how often that happens but if you're using shortwave broadcasts like that, I'd assume that it's still a risk.

      Compared to using a Thuraya or Inmarsat phone or even Irridium (they're still kicking, if I'm not mistaken, is Globalstar still in business?) that can be used just about anywhere, connecting it to a computer and doing an TLS handshake or whatever crypto you wish and sending your digital data that way, the numbers thing seems like kind of a last resort. If you had enough electric power to keep a laptop going, you had a laptop and one of these phones, you're looking at a bi-directional communication system which if you had prepared messages and such could be very very short and quick. Probably untracable by all but the most sophisticated governments and even then they'd have to get a little lucky. Take that a step further and if you invested any time at all in minimizing the hardware and hiding it within some normal looking things and it's a no brainer.

    2. Re:Interesting but moot by Mr.+Slippery · · Score: 2, Insightful
      The big boys can afford one time pads.

      Er, afford a one-time pad? All you need to do is cat /dev/random, or if you're without a computer, spend an hour or two rolling polyhedral dice. Make two copies of your set of random numbers.

      --
      Tom Swiss | the infamous tms | my blog
      You cannot wash away blood with blood
    3. Re:Interesting but moot by Anonymous Coward · · Score: 0
      The NSA has decoded one-time pads before though. Look up Venona.
      they ran out of pad, so they reused it.
      Then it wasn't a one-time pad, was it? Moron.
    4. Re:Interesting but moot by Anonymous Coward · · Score: 0

      Except that you're relying on /dev/random being truly random, which isn't the case with poorly-written implementations- a potentially serious security hole.

    5. Re:Interesting but moot by mollymoo · · Score: 1

      Does the laptops and sat phones come with a t-shirt that says "American Spy" on it? I guess not, as just carrying a laptop and sat phone around in many parts of the world is equivalent to a t-shirt which says "American Spy" on it in big, orange letters.

      --
      Chernobyl 'not a wildlife haven' - BBC News
    6. Re:Interesting but moot by Anonymous Coward · · Score: 0

      Generating the OTP is easy, but distributing it securely between agents is much more difficult and costs.

  20. 4 8 15 16 23 42 by GaelTadh · · Score: 5, Funny

    four eight fifteen sixteen twentythree fortytwo

    --
    Search your logs like the web: splunk!
  21. CIA? I suspect not. by Kadin2048 · · Score: 1

    I'm not disbelieving you in the slightest; while I haven't heard any numbers stations personally (although actually I have the equipment to do so, I've just never hunted around -- now maybe I will though), it makes sense that they'd be around. As a method of communication it makes quite a bit of sense, particularly given their pre-Internet origins.

    However, I'm interested as to why you think it's specifically the CIA? It seems like the CIA would probably have more sophisticated methods of communication, via email or other methods, and would hardly need to rely on numbers stations anymore. Do you have some reason to actually think it's the CIA, or were you just being facetious?

    My understanding was that most of the remaining numbers stations are broadcast by countries whose intelligence infrastructures probably are a bit behind the times technologically, and are still using older methods for communicating with their human assets. Given the U.S. focus on sigint and technology (even at the expense of humint) it seems odd that they would still be using numbers stations.

    --
    "Ladies and gentlemen, my killbot features Lotus Notes and a machine gun. It is the finest available."
    1. Re:CIA? I suspect not. by i_ate_god · · Score: 4, Insightful

      You're a spy. You're sent in to infiltrate a terrorist organization in some self sustaining desert town full of impoverished potential recruits for the terrorist organization. Shortwave is a common technology amongst these kinds of towns. Radios have been around for over 100 years now I believe (if not almost 100 years). Your laptop, PDA, or other fancy high tech equipment is going to give you away.

      --
      I'm god, but it's a bit of a drag really...
    2. Re:CIA? I suspect not. by hazem · · Score: 5, Interesting

      If you are in the US military and go to the language school in Monterey, a big portion of your "lab" training is learning how to transcribe groups of numbers read in your target language. It's a big part of your "grade" in your coursework.

      Now, it's hard to say if the US transmits numbers, but it's pretty clear that there appears to be some intelligence value in teaching the electronic warfare people how to listen to streams of numbers in other languages.

      It's probably a great way to send one-way messages to the field. A simple AM radio can be modified work in different frequencies. With that and a normal-looking one-time-pad code book can go a long way to providing secure communication that is inconspicuous.

      So, the CIA might not do it, but other countries and services probably do.

    3. Re:CIA? I suspect not. by andy314159pi · · Score: 3, Interesting

      the main reason they still use short wave is the that some of "short wave" isn't so short... the frequencies that they use are the ones that carry long distances so that the origin of broadcast can be very far away from the agent. Also, the devices required to listen to particular frequencies can be made very small so that agents in difficult places can hide the devices. Finally and most importantly, the broadcast voice of the coded messages is distinctly American. Maybe another country could use the voice with an American accent but I don't see why it would be necessary. I think that the agency has faith in the quality of the method used to code the message. Voice messages were used throughout WWII without any enemy getting anywhere near breaking the codes.

      Computer data requires equipment to receive and decode, even if it just a laptop. Short wave requires only a receiver that can be made almost arbitrarily small and can therefore be ditched or hidden in an emergency.

    4. Re:CIA? I suspect not. by andy314159pi · · Score: 1

      I'll just add to my previous comment that it was once widely believed that long wave radio signals propagate the longest distance, then for a while that idea was less well believed. But currently most ham radio guys will tell you that in fact this is the case (that long wave radio signals are less attenuated and are better for long distance communication.)

    5. Re:CIA? I suspect not. by Deadstick · · Score: 1
      Les sanglots longs des violons de l'automne

      Blessent mon coeur d'une langueur monotone...

      rj

    6. Re:CIA? I suspect not. by Detritus · · Score: 1
      I've read that some of the numbers stations have been confirmed to originate from transmitters located at federal communications centers in the USA.

      One of the advantages of using numbers stations is that your agent only needs an ordinary short-wave radio, a one-time pad, and minimal training. That's safer than giving them some widget that can't pass as a normal piece of electronics.

      --
      Mea navis aericumbens anguillis abundat
    7. Re:CIA? I suspect not. by WindBourne · · Score: 1

      The CIA and the NSA have a large number of channels of communication. They use push and pull technologies. I would be surprised if they were not using radio (a push tech) as well as the net (more of a pull). Keep in mind, that monitoring the net is quite a bit easier than monitoring the airwaves. Also easier to jam. That means that the enemy can easily find an agent, but not with a radio that transmits. After all, did you notice the shear number of stations coming from Cuba? That is in use by cuban and russians to transmit to spies here in the states. And yes, there are still quite a few spies operating here. If nothing else, they are hi-tech spies, but most are going after our gov.

      --
      I prefer the "u" in honour as it seems to be missing these days.
    8. Re:CIA? I suspect not. by 6ame633k · · Score: 1

      Also - I believe you can bounce signals off the moon (moon bounce) I remeber my grandfather talking about it - he was a ham, now a silent_key.

      --
      You had me at merlot
    9. Re:CIA? I suspect not. by david_bonn · · Score: 1

      I'd think, in the modern era, that a shortwave receiver is a lot more rarely seen than a laptop computer.

      And given that I've found and used internet cafes in oases in the Sahara Desert, in villages in Nepal, and in noisy, smoky discos in Siberia, I'm pretty sure that there are a lot of alternatives in the modern world. And sneaking into the bathroom to listen to shortwave transmissions is a hell of a lot more suspicious than checking your yahoo email for love letters from a lady friend back home...

      You could pass a hell of a lot of information with simple pre-arranged codes in photographs. Say, if you receive a photo of a woman in a purple dress it means you are to (for example) blow up someone's embassy... Sure it is low bandwidth, but how much bandwidth would spies need?

    10. Re:CIA? I suspect not. by grcumb · · Score: 1

      Les sanglots longs des violons de l'automne

      Blessent mon coeur d'une langueur monotone...

      Aww shit, do we gotta invade Franc again?!

      --
      Crumb's Corollary: Never bring a knife to a bun fight.
    11. Re:CIA? I suspect not. by Da+Web+Guru · · Score: 1

      Using more advanced forms of communications requires advanced technology with bandwidth requirements. While it may be possible with satellite phones or a PDA with a satellite uplink, it could cause unnecessary RF noise that could be picked up by other monitoring devices (e.g., like your cell phone constantly sending out signals to connect to the tower). If you are in covert ops, then it is possible to find yourself in a situation where you are surrounded by systems that listen out for unauthorized RF noise. And of course, the last thing you want to do is use some Internet cafe (even if you have your own laptop) to download and print instructions from home base, especially since they now have the ability to be intercepted (and decoded) on the fly. Email isn't always as secure and reliable as you would like. The last thing you need is a critical mission to be delayed or scrubbed because of a cable cut hundreds (or thousands) of miles away. The only way to make it secure would be to set up some form of encryption between your computer and the home base, which isn't going to be possible (or desired) because 1) you would have to trust the computer you are using isn't already compromised, 2) you have to be able to download and install whatever software is necessary to set up the link, and 3) you let the owners of the local computer network know where "home base" is.

      --

      --guru

    12. Re:CIA? I suspect not. by Marcos+Eliziario · · Score: 1

      Most SW radios are also capable of receiving AM and FM commercial broadcasts. In impoverished coutries, portable radios are still very common. Men use it to hear music, sports and news. So, if you are a spy pretending to be a common guy, blended with the locals, having a small radio is far more discrete than going to an internet cafe or having a laptop. Having a laptop is even worse, because in impoverished countries, it will label you as a rich guy, and rich people tend to gather a lot of attention, which is exactly the opposite of what a spy wants.

      --
      Your ad could be here!
    13. Re:CIA? I suspect not. by leighklotz · · Score: 2, Interesting

      >I'll just add to my previous comment that it was once widely believed that long wave radio signals propagate the longest distance, then for a while that idea was less well believed....

      Terms such as "short wave" and "long wave" have largely passed into disuse, replaced by High Frequency (roughly short wave) and Medium Frequency (roughly long wave), and then for mostly point-point communications, VHF, UHF, and above.

      Except for the exotic moonbounce and tropospheric ducting mentioned, all long distance radio communications on this planet uses various layers of the ionosphere, and depends on ionosphereic reflection and refraction, and is thus dependent on the state of the Sun, which has an 11-year up-down cycle. We're going to reach rock bottom in 2007, and then things will start looking up again.

      If you want to see what frequency is best for reliable communications around the globe, check out this site and look at the map closest to you. These maps are compiled using ionosondes, and represent hourly experiments. They will tell you what frequency in the HF has the best chance of bouncing off the ionosphere and reach the destination. The NVIS map at the top is for transmitting straight up and having your signal come down in a ~250 mile radius. The maps below that, centered on cities around the world (San Francisco, Sydney, etc.) will show you what you need to do to get a signal to or from those cities. There's no quality info, but if you want current solar conditions, see the Propfire plugin, which will tell you.

    14. Re:CIA? I suspect not. by Anonymous Coward · · Score: 0

      I believe one of the reasons that shortwave may still be in use, is the fact that its reception is non traceable. When you go into an internet cafe, the internet connection can easily be monitored and the messages tracked, and the location of the spy given away. cant do it with shortwave.

    15. Re:CIA? I suspect not. by shadwstalkr · · Score: 1

      What is a normal looking one-time pad?

      "How do you explain this notebook filled with lines of random letters printed on flash paper?"

      "I like to solve crossword puzzles by brute force, then roll quick-burning cigarettes."

  22. Conet Project MP3 Download by 3mpire · · Score: 4, Informative

    You can download the mp3's for free: http://irdial.hyperreal.org/the%20conet%20project/

    1. Re:Conet Project MP3 Download by 3mpire · · Score: 1

      how is that modded off topic? it's free mp3 downloads of friggin numbers stations.

  23. Broadcasting From Here by Anonymous Coward · · Score: 2, Interesting
    British Intelligence broadcasting from Cyprus

    It's quite likely they're broadcasting from here Google Satellite

    That's Ayios Nikolaos. Supposedly part of the Echelon network. If you look to the north of the building, there's a large mast that might easily be a short-wave antenna.

  24. Next: Numbers Websites / Numbers IRC Channels by Ron+Bennett · · Score: 1

    Awaiting the follow-up Slashdot article about Numbers Websites and Numbers IRC Channels ... are there any known ones?

    Ron

    1. Re:Next: Numbers Websites / Numbers IRC Channels by Anonymous Coward · · Score: 0

      #wunclub on the ZiRC network is where all the numbers geeks hang out, including the fellow mentioned in the article.

  25. Time Bomb. by headkase · · Score: 0, Offtopic

    In ten years someone who has been recording them for thirty years will have quantum breakers to decode them with. Once this first layer of protection is broken - and it will be - then I hope our information inside of that is also semantically encoded (Windtalkers) to give it a few more years after that before someone else knows our old secrets.

    --
    Shh.
    1. Re:Time Bomb. by Detritus · · Score: 5, Informative

      A quantum computer is useless against a message encrypted with a properly constructed one-time pad.

      --
      Mea navis aericumbens anguillis abundat
    2. Re:Time Bomb. by FooAtWFU · · Score: 1
      In ten years someone who has been recording them for thirty years will have quantum breakers to decode them with.
      Uhm, if these stations are being used for message dispersal, chances are good that they are using a one-time pad to encrypt the data. This isn't public-key cryptography: it's actually impossible to decrypt one of these without information about the original encrypting pad - not just practically impossible, theoretically impossible too, and no amount of processing power, classical or quantum, will ever make it otherwise: the encryption is random (real random, as in, determined with radioactive decay and thermal noise and radio waves from space, not invented by some silly computer program) and changes with each character.
      --
      The World Wide Web is dying. Soon, we shall have only the Internet.
    3. Re:Time Bomb. by spaceyhackerlady · · Score: 3, Informative
      In ten years someone who has been recording them for thirty years will have quantum breakers to decode them with.

      No.

      Decrypting one-time pads isn't hard because there isn't enough compute power to throw at it. It's hard because it can't be broken, no matter what you do to it. Given a message to decrypt, the best an enemy cryptanalyst can do is random chance. There are better ways of compromising secrets.

      This is a well-established result in encryption and there is no point in arguing about it. The only time one-time pad encryption has ever been broken was when the agents misused their one-time pads. The Venona decrypts are a good example of this.

      (Wow! First time I've ever linked to the NSA!)

      ...laura

    4. Re:Time Bomb. by AlHunt · · Score: 2

      >This is a well-established result in encryption and there is no point in arguing about it. The only time one-time
      > pad encryption has ever been broken was when the agents misused their one-time pads. The Venona decrypts are a good example of this.

      Yep, that's the more fascinating part - who is generating the pads, HOW are they being generated and distributed? This has been going on for soooo long it's hard to believe that someone hasn't broken it from that end.

      Al

      --
      1 in 4 Maine children in struggle with hunger.
    5. Re:Time Bomb. by FooAtWFU · · Score: 4, Informative
      There's a couple ways to generate one-time pads. The first I read was described at HotBits. They take a little radioactive bit of cesium, and a radiation detector which can detect atomic decay:

      What we do, then, is measure a pair of these intervals, and emit a zero or one bit based on the relative length of the two intervals. If we measure the same interval for the two decays, we discard the measurement and try again, to avoid the risk of inducing bias due to the resolution of our clock.

      You can find more at Wikipedia's article on hardware random number generators:

      There are two fundamental sources of practical quantum mechanical physical randomness: quantum mechanics at the atomic or sub-atomic level and thermal noise (some of which is quantum mechanical in origin). Quantum mechanics predicts that certain physical phenomena, such as the nuclear decay of atoms, are fundamentally random and cannot, in principle, be predicted. (For a discussion of empirical verification of quantum unpredictability, see Bell test experiments.) And, because we live at a finite, non-zero temperature, every system has some random variation in its state; for instance, molecules of air are constantly bouncing off each other in a random way. (See statistical mechanics.) This randomness is a quantum phenomenon as well. (See phonon.)

      Because the outcome of quantum-mechanical events cannot in principle be predicted, they are the 'gold standard' for random number generation. Some quantum phenomena used for random number generation include:

      • Shot noise, a quantum mechanical noise source in electronic circuits. A simple example is a lamp shining on a photodiode. Due to the uncertainty principle, arriving photons create noise in the circuit. Collecting the noise for use poses some problems, but this is an especially simple random noise source.

      Thermal phenomena are easier to detect. They are (somewhat) vulnerable to attack by lowering the temperature of the system, though most systems will stop operating at temperatures (e.g., ~150 K) low enough to reduce noise by a factor of two. Some of the thermal phenomena used include:

      --
      The World Wide Web is dying. Soon, we shall have only the Internet.
    6. Re:Time Bomb. by Qzukk · · Score: 1

      The interesting question is, how do you know whether you're listening to the message or the pad? What if one station's bunch of random numbers is broadcasting the one time pad, which is then later used by the other station to broadcast other numbers that are the actual message?

      --
      If I have been able to see further than others, it is because I bought a pair of binoculars.
    7. Re:Time Bomb. by FooAtWFU · · Score: 2, Interesting

      You want your one-time pads to be very, very secret; that's why you can spread the actual cryptotext anywhere and not have to worry about a thing. If it were as simple as comparing one numbers station to another, any intelligence agency with a few computers to throw at the problem could check the numbers against each other and look for meaningful messages. While you might think that's oh-so-slightly unlikely, is it something you're willing to bet your security as an intelligence agency on?

      --
      The World Wide Web is dying. Soon, we shall have only the Internet.
    8. Re:Time Bomb. by shadowmas · · Score: 1

      Also it should be remembered OTP is only as good as it's random number source. so unless the OTP was generated using some truly random number generator (pseudo random number generator or a generator which depended on hardware events which can be predicted) then random number sequance becomes predictable and OTP can indeed be broken.

    9. Re:Time Bomb. by shadowmas · · Score: 1

      Shoul've read it before clicking the post button

      (pseudo random number generator or a generator which depended on hardware events which can be predicted) that was meant as an example of what isn't a truly random generator.

    10. Re:Time Bomb. by swillden · · Score: 1

      What if one station's bunch of random numbers is broadcasting the one time pad, which is then later used by the other station to broadcast other numbers that are the actual message?

      Because that would be a good way to destroy the security of the encryption.

      If that were done, all the enemy would have to do is record all of the numbers and then overlay them, sliding them against each other and looking for the matchup that produces non-uniformly distributed values. Such comparisons are very easy to do with computers.

      You also wouldn't want to broadcast the one-time pad and then use it to encrypt messages sent via another channel, because then if the enemy ever intercepted your messages, he could just use all of the recorded numbers values, sliding them against your messages.

      No, if you want your one-time pads to be secure, they must be kept absolutely secret. Which raises the obvious question: If you have a way to transport the one-time pads with absolute security, why not just use that to transport your messages? Which is exactly why one-time pads are less useful in practice than they might seem to be. In reality, their primary use is in situations where there are two channels available, one fast but insecure, the other slow but secure. Use of the slow-but-secure channel to transport OTPs then allows the fast-but-insecure channel to be used securely.

      I have no idea if it's real, but one of Tom Clancy's books described a likely OTP usage scenario -- secure communications between the US government and it's embassies in foreign countries. The OTPs were generated from true random sources and burned onto pairs of CDs, one of which was kept at the State Department and the other of which was sent to an embassy in the diplomatic pouch, hand-carried by a trusted courier. When either Washington or the embassy used the CD to encrypt or decrypt message traffic, the CD was read by a special player with an extra laser, which burned away the OTP data as soon as it was read off the disk. That way, were the embassy to fall the enemy wouldn't be able to recover the OTP data and use it to decrypt already sent -- and intercepted -- messages.

      --
      Note to ACs: I usually delete AC replies without reading them. If you want to talk to me, log in.
    11. Re:Time Bomb. by nuzak · · Score: 1

      Which raises the obvious question: If you have a way to transport the one-time pads with absolute security, why not just use that to transport your messages?

      Because you have something sensitive to say later.

      --
      Done with slashdot, done with nerds, getting a life.
    12. Re:Time Bomb. by name*censored* · · Score: 1

      Of course it's possible to crack with enough computing power - just brute force it (ie make EVERY CONCIEVABLE KEY and try it against that), have the computer spit out solutions it thinks might be the one (test for words formed) and have the user tell it which is correct and which ones just happened to form words. It'd take a long long time with todays computing power, but its not IMPOSSIBLE.

      --
      Commodore64_love: I don't comprehend people who're so frightened of death that they'll bankrupt themselves to stay alive
    13. Re:Time Bomb. by Bishop · · Score: 1

      Are you trying to be funny, or are you clueless. I can't tell.

      As is often the case this post is in fact a secret message encoded with a one time pad. Try to guess what the secret is.

    14. Re:Time Bomb. by swillden · · Score: 2, Interesting

      Which raises the obvious question: If you have a way to transport the one-time pads with absolute security, why not just use that to transport your messages?

      Because you have something sensitive to say later.

      But why not just use the same secure channel later?

      No, there has to be another reason. I mentioned the most common reason -- that the secure channel is too slow. There can be others, of course, such as that the secure channel is only temporarily available, or that it can only be used a limited amount, or that it is one-way, etc..

      A secure channel is required to be able to use an OTP, but it must be deficient in some way (other than its security) or it doesn't make any sense to bother with an OTP.

      --
      Note to ACs: I usually delete AC replies without reading them. If you want to talk to me, log in.
    15. Re:Time Bomb. by Eternauta3k · · Score: 1
      just brute force it (ie make EVERY CONCIEVABLE KEY and try it against that), have the computer spit out solutions it thinks might be the one (test for words formed) and have the user tell it which is correct and which ones just happened to form words. It'd take a long long time with todays computing power, but its not IMPOSSIBLE.
      But you will get EVERY CONCIEVABLE MESSAGE. That's right, you'll get any possible message of that length. From a spy message to a cookie recipe. Maybe it'd be more effective to look for spy messages on /dev/random
      --
      Yeah. Would you choose a neurosurgeon who pokes around people's brains in his spare time? I wouldn't.
    16. Re:Time Bomb. by mollymoo · · Score: 1

      You do realise that using that process all you'd get is a list of every possible message the same length as the original message, right? It would still be impossible to know which of the numerous possible coherent messages it was - there is simply no way to distinguish "bribe the president" from "shoot the president", for example.

      --
      Chernobyl 'not a wildlife haven' - BBC News
    17. Re:Time Bomb. by nuzak · · Score: 1

      > But why not just use the same secure channel later?

      Because a spy looks kinda suspicious when he's accompanied by his handler 24/7

      --
      Done with slashdot, done with nerds, getting a life.
    18. Re:Time Bomb. by swillden · · Score: 1

      > But why not just use the same secure channel later?

      Because a spy looks kinda suspicious when he's accompanied by his handler 24/7

      Right, that's the case where the secure channel's deficiency is that it can only be used occasionally.

      --
      Note to ACs: I usually delete AC replies without reading them. If you want to talk to me, log in.
    19. Re:Time Bomb. by zuiraM · · Score: 1

      Even if they weren't using One Time Pads, this would make absolutely no difference.

      Infosec theory has long regarded crypto more as a means to delay the availability of information to unauthorized parties than as a means of actually denying its availability.

      You use a form of crypto that is convenient for the target use and known to take longer to break than the time this information will remain sensitive. Information that will remain sensitive indefinitely should always be OTP-encrypted.

  26. Try cracking a "numbers station" on your own by chrisgagne · · Score: 5, Interesting

    For those of you who like this sort of thing, check out 202-386-6909 and http://code-cracker.cerbumi.org. This is a test project that I developed for Cerbumi.org, a new and entirely non-commercial (no ads, fees, etc) website designed to help with real-world problem solving. (Think of it as a "Sourceforge.net" for projects like the "Open Prosthetics Project.") The first person to solve the puzzle and post the answer to the code-breaker project can choose where the Cerbumi.org team will make a $100 donation on their behalf.

    If this sounds like fun, please consider signing up for the Cerbumi.org site at http://public.cerbumi.org/goons (a "secret back door for a site that normally requires registration) and try to crack the code. Also, please consider checking out the main planning project at http://cerbumi.cerbumi.org and our Flash-based demo at http://cerbumi.org/flash. I'd love to hear your thoughts, too... just reply. :)

  27. Jenny, don't change your number by bigredradio · · Score: 1

    8-6-7-5-3-0-9

  28. Numbers stations freak me out by AdmNaismith · · Score: 0

    I'm surprised there has not been a J-Horror movie about this. I'm am not easily scared by anything, but listening to these stations seriously freaks me out.

  29. My Eyes! by Anonymous Coward · · Score: 0

    207 46 225 60
    207 46 18 30

    You couldn't have given us a warning before you linked there?

    g

  30. Top Of The Pops! by qengho · · Score: 2, Interesting
  31. "Most interesting strings...?" by colinbrash · · Score: 1

    This article made me recall a great All Things Considered story from a few years back about Akin Fernandez's 'Numbers' CD, a CD compilation of some of the most interesting strings of randomly read numbers reaching out across the airwaves.

    So... who's the guy that determines which strings are more interesting than others? That's what I want to know...

    1. Re:"Most interesting strings...?" by finalbroadcast · · Score: 1

      Test Audiences. Comprised entirley of math fetishists, whichever numbers turn them on the most, are on the CD.

  32. boring! by FudRucker · · Score: 1

    i been a shortwave lister for over 20 years with a high quality R.L. Drake, i listened to number stations and after listening to them for a moment i spun the dial in search of something more interesting...

    i miss the weekend evenings of listening to Pirate radio - Captain Eddie & his Radio Airplane, Dr. Tornado and Joe Mamma, frequencies like 7385KHz & 6955KHz have not had any good listening lately, i sure wish i knew of some other frequencies to monitor because dialing thru 30 megahertz of bandwidth is just too much to search thru in a single evening...

    --
    Politics is Treachery, Religion is Brainwashing
  33. HF, VHF, UHF... by Kadin2048 · · Score: 5, Informative

    You're correct, but just in the interests of preventing confusion, the idea of what was a "long wave" in the early 20th century was very different from what an electrical engineer might think of today. What are today rather low frequencies for radio communication were at the time rather high, hence the term 'short waves.' The preferred frequencies for communication at the time are now barely used by anyone, with the possible exception of naval communication with submarines and the like. Their data-carrying capacity is just too low, and the antennas they require are obnoxiously large.

    Of course, by calling things in the 1-30 MHz range "high frequency," those engineers forced us to use such terms as "very high frequency," and "ultra high frequency" when equipment finally became capable of transmitting at those wavelengths.

    --
    "Ladies and gentlemen, my killbot features Lotus Notes and a machine gun. It is the finest available."
  34. HELLO WORLD by ettlz · · Score: 1

    Um, hello? Typical bloody troll. Now it's appropriate, it sods off.

  35. "Most interesting silly strings...?" by Anonymous Coward · · Score: 0

    "So... who's the guy that determines which strings are more interesting than others? That's what I want to know..."

    The guy who invented string theory.

  36. EIP by Anonymous Coward · · Score: 0

    271828 459 04 5314 15926 53 58979 323 84!
    62643 38 32795 028841 97169399 3751058?

  37. Whiskey Tango Foxtrot by gelfling · · Score: 1

    Whiskey Tango Foxtrot
    Whiskey Tango Foxtrot
    Whiskey Tango Foxtrot

    1. Re:Whiskey Tango Foxtrot by nsaspook · · Score: 1

      INT WTF

      --
      In GOD we trust, all others we monitor.
  38. They're messages to jihadist by TodMinuit · · Score: 1
    --
    I wonder if I use bold in my signature, people will notice my posts.
  39. I try so hard... by jeffmeden · · Score: 3, Funny

    I am a habitual NPR listener, but everyone I know finds it slow, uninteresting, easily dismissed radio. I try to expose them to intriguing news material that's delivered spin free and very palatable, but have not yet impressed a single person. It's times like these that I just shake my head and sigh.

    "a great All Things Considered story from a few years back about Akin Fernandez's 'Numbers' CD, a CD compilation of some of the most interesting strings of randomly read numbers"

    Interesting... random numbers... Ok, so my friends were right.

    1. Re:I try so hard... by espressojim · · Score: 1

      I am a habitual NPR listener, but everyone I know finds it slow, uninteresting, easily dismissed radio. I try to expose them to intriguing news material that's delivered spin free and very palatable, but have not yet impressed a single person. It's times like these that I just shake my head and sigh.

      "a great All Things Considered story from a few years back about Akin Fernandez's 'Numbers' CD, a CD compilation of some of the most interesting strings of randomly read numbers"

      Interesting... random numbers... Ok, so my friends were right.

      So, the Number Stations story is completely boring, and your friends were right. And yet, you're reading (and posting) about it when it's on Slashdot? What about /. makes the story inherently more interesting?

      NPR covered it years earlier, and their story has much better content than the submitted story here. I remember listening to the story in question, and it was very interesting.

      So yes, NPR might just not suck.

      (comming to you live from a Cambridge, MA, brie eating liberal)

    2. Re:I try so hard... by Anonymous Coward · · Score: 0

      Spin free? NPR?, and you wonder why your friends don't want to listen? Maybe they are too smart to buy the "spin free" spin that YOU put on it...

    3. Re:I try so hard... by Anonymous Coward · · Score: 0

      When talking about bias or "spin" you're always talking in relative terms, so I'd have to agree with the parent poster despite the fact that I routinely notice bias on NPR. Generally I find the reports on NPR to relatively balanced -- the way I most often see bias in NPR is in their choice of topics they cover which is a more insidious form of bias, but ultimately less objectionable I think (provided you don't use NPR as your only source for news). However, I have found there to often be significantly more bias on the non-NPR shows on NPR member stations. On political discussion programs on my local NPR station I have have frequently been so disgusted by the plainly unobjective statements of hosts that I have changed the station. This alone keeps me from donating to their fund drives, despite the fact that I listen regularly. For the curious, my local NPR station is WAMC in Albany and I find Alan Chartock to be easily the worst offender in this regard.

  40. How to be an effective spy. by Anonymous Coward · · Score: 0

    First of all, you should immediately refocus all of your thoughts on "How to pretend to be a spy". The number one thing you should be doing, in the first few hundred hours you invest in pretending to be a spy, is lining up a good reward for successfully pretending. What use is someone who's an expert at pretending to be a spy? First of all, they become an immediate hot ticket for top corporate positions; their social skills lead to immediate pay and romantic benefits; as effective human beings, they lead more meaningful lives. These are just a few ideas to get you started.

    Next, the number one thing you need to keep in mind all day, every day, is "How does this look?" For example, right now, I am trolling slashdot. This is the most important word for me, in my life as a pretend spy: trolling. It explains, in a heartbeat, everything less than literally so that a person might say or lead another person to perceive. Trolling. Trolling is its own reward, and one of the main reasons for pretending to be a spy. Wikipedia's article on trolling is a good starting resource.

    Long-term possibilities after effectively pretending to be a spy include:
    - Book-writing
    - Screenplay-writing
    - Consultancy

    What are you pretending to do?
    You are pretending to be completing actions distinct from those a typically socialized observer would consider you to be doing. Specifically, you are pretending to be gathering and recording information about your surroundings and the people you interact with, without appearing to do so. Thus one of the most effective ways of pretending to be a spy is to do creative work that reworks intelligence gathered. Many professional stand-up comics in fact pretend to be spies, for example Seinfeld. When mentioning "gathering material", they are in fact gathering social intelligence. During the Cold War, Russia trained tens of thousands of spies using networked American television.

    Fundamental test. The fundamental test for "appearing to do so" is the sanity-test: is it clear and obvious to you that you are currently gathering intelligence? If so, it is clear and obvious to others. You must instead use tools and methods that leave you in a state of mind such that you only suspect you are doing something as part of pretending to be a spy. For example, using TrueCrypt is a clear and obvious act of inexplicable social deviation: you would have to have a reason for doing so, and you would always have this reason somewhere in your mind. (For example "I'm using TrueCrypt as part of pretending to be a spy, or "I am reading this nonfiction book on espionage as part of my pretending to be a spy" ) On the other hand, there is no clear distinction between using web-mail that happens to be secure for practical reasons, or because the spy you're pretending to be would find it useful also. Similarly, there is no clear distinction between reading a fiction spy thriller for fun, or to be more effective at pretending to be a spy.

    Spy gadgets and hardware: This is a tough one. I am still investigating what devices you may use (tentatively, it would appear you may have on your person a mobile phone and car keys, to the exclusion of any other item.) However, you may definitely use any and all web-based applications from Yahoo or Google. However, your best bet is to post in forums. For example, this post is one of the main tools I am using as part of pretending to be a spy. That's right, I am pretending to be a spy (with the below allegience) even as we speak.

    Allegience: The primary purpose for pretending to be a spy, as opposed to finding work in actual espionage, is in having an allegience to progress over military advantage. Obviously, it's much cooler to make the world work better and more easily than it is to forward some data to the military. No one pretends to be a spy for military reasons.

    Slashdot and The Open Source Community: Unfortunatel

    1. Re:How to be an effective spy. by name*censored* · · Score: 1
      the number one thing you need to keep in mind all day, every day, is "How does this look?" For example, right now, I am trolling slashdot

      HAHAHAHAHAHAHAHAHAaahaha! BEST. TROLL. EVER.
      --
      Commodore64_love: I don't comprehend people who're so frightened of death that they'll bankrupt themselves to stay alive
  41. Methods generally don't advertise themselves by Anonymous Coward · · Score: 1, Interesting

    Why couldn't it be replaced by websurfing? Maybe the codes are ultra subtle? Perhaps the .gif on the title bar of a certain webpage has it's pixels on one row manipulated in a very small way to give a massages, perhaps instead of being pitch black (0,0,0) it is (1,0,0) undectable to the human eye and perhaps seen as irrevelant to 99.999% people who do detect it but write it off as an artifact/noise introduced somehow in the making of the gif.

    Or perhaps the action is on IRC.

    Or maybe the first letter on every site gives a clue. The beauty is that these methods don't advertise themselves and are nearly undectable to anybody.

    Shortwave radio is known so the thrill is somewhat gone from catching those fleeting messages.

  42. Numbers Rule! by 22_9_3_11_25 · · Score: 1

    nuff said!

  43. Anyone got info on this one? by guruevi · · Score: 1

    I picked up a radio station once on one of those obscure channels that wasn't registered to any radio stations. It just seemed to be random sentences and/or words, nothing all day but random sentences and words. Listened to it for a while, got bored and moved on.

    I think this is to keep all those 'conspiratists' busy decrypting random data instead of real transfers going on on other channels.

    --
    Custom electronics and digital signage for your business: www.evcircuits.com
  44. Better... by flyingfsck · · Score: 1

    This one is better than the silly numbers stations http://www.spamradio.com/

    --
    Excuse me, but please get off my Pennisetum Clandestinum, eh!
  45. for the price of a dime... by rubberchickenboy · · Score: 1

    867-5309?

  46. Truly random digits? I doubt that. by wexsessa · · Score: 1

    If they are truly "random digits" they either would not mean anything, or whatever they happened to mean would very probably be of no interest to the decoder. I'll settle for "seemingly-random digits".

    1. Re:Truly random digits? I doubt that. by Anonymous Coward · · Score: 0

      You take a deliberate set of digits - the "plaintext" - and a totally random set of digits - the "one time pad" - and then XOR them together to get the "ciphertext". (Later, you XOR them back, since you have a copy of the one-time pad.) Is the ciphertext "truly random"? eh, that's a question of semantics.

  47. Shortwave Station Leaders - nothing sinister by flyingfsck · · Score: 2, Informative

    I listened to some of those recordings and they were clearly the leaders transmitted by commercial stations, to indicate where the real transmission is. Over the course of the day, shortwave stations move to different frequencies, that are better propagated by the ionosphere.

    When a station moves to a new frequency, they continue to play a unique identifier tune and read out the frequencies where the station may be received better. For example, 39715 would be 39MHz715.

    Others may simply be a station transmitting automated junk, in order to 'occupy' the channel, so that someone cannot apply to the IETF to use the unused channel. Since they all have these number voice systems to announce their frequencies, it is logical to use that system to occupy the channel with random junk.

    --
    Excuse me, but please get off my Pennisetum Clandestinum, eh!
    1. Re:Shortwave Station Leaders - nothing sinister by Hasai · · Score: 5, Interesting
      I beg to disagree. Number stations are quite real. What possibly confused you is how some number stations operate.


      Take the old Radio Moscow transmitter in East Berlin, for example. You are quite right that such HF broadcasts would often end with a looping tape containing info on what freq(s) the site would be transmitting next. Well and good.


      Eventually, though, the tape ends and the transmitter shuts down. Fine. Now all you're listening to is a whole lot of nothing but white noise, right? STAY ON THE FREQ FOR ANOTHER 5-10 MINUTES. Suddenly another carrier comes up, and a woman's voice starts. On the Radio Moscow freq she would always start with "Achtung, achtung," then proceed to read-off a long string of number groups (NOT freqs!). When done, she would finish with "Ende," and the carrier would immediately drop.


      Still sound like a freq change notice to you? :)


      --

      Regards;

      Hasai

    2. Re:Shortwave Station Leaders - nothing sinister by serialdogma · · Score: 1

      Sorry, the IETF; what does the Internet Engineering Task Force have to do with radio stations?

  48. Triangulation to locate sources? by dircha · · Score: 2, Interesting

    Shouldn't it be possible to use a directional antenna or some similar technology, from several points around the globe to locate the source of the transmissions with a reasonably high degree of precision?

    I don't have any shortwave equipment myself, but it seems that would be a very interesting project.

    It would be quite exciting, say, to discover signals originating from a mountain in Wyoming :)

    This is pretty sweet. It's a very interesting strategy. Shortwave receivers are easy to come by, do not arouse suspicion, and no one can detect that you are listening in.

    1. Re:Triangulation to locate sources? by KillerBob · · Score: 3, Funny

      The thing with HF is that there's really no way to reliably determine where the signal is coming from, because it's operating at a frequency that can bounce around in the ionosphere indefinitely. That's how they're able to send a signal from distances beyond line of sight... it's not penetrating the Earth, it's bouncing around in the atmosphere.

      Given the right atmospheric conditions, you can pick up the signal decades later: one of the coolest things that ever happened to me was picking up battle chatter from Vietnam while on a training exercise with Army Signals. I'm 25. It was eerie people die in a transmission that was sent before I was born.

      --
      If you believe everything you read, you'd better not read. - Japanese proverb
    2. Re:Triangulation to locate sources? by Anonymous Coward · · Score: 0

      Actually you CAN detect what you are listening to, in most cases.

      Nearly every radio receiver -from the cheapo junk radio from a dollar store to automobile radios to walkie talkies to shortwave to Bose uberexpensive toys- uses a local oscillator circuit to demodulate the incoming signal. The oscillator is a small transmitter itself and generates some RF signal, which the main reason they don't want people using listen-only radios on airlines. The small signal "might" affect something in the plane particularly if you are using a portable radio to listen to the air band channels.

      Despite the fear, it is usually a very weak signal, but the important thing is that it IS present and that the local oscillator changes its frequency to match the incoming signal. Tune to a different station and the local oscillator changes too.

      So, to figure out WHAT someone is listening to, all you need to do is monitor for that leaking signal and do the math to track it back to the frequency. Bingo. Done.

      This sort of reverse-tuning is practical and has been used by the assorted letter-agencies to track spies, pirate radio stations, etc.

      There are some radios which don't use this sort of oscillators so it is not always possible to do the magic. Most of the time, yes.

      There was even at least one advertising company which plans (planned?) to put this sort of technology in billboards, monitor the oscillator leaks to see what radio stations were being heard in passing cars, and display matching advertising on the spot. I don't know what has become of that business plan.

      The British OfCom authorities use similar gear to track down people who have not paid their TV license fees. You'd listen for the TV's oscillator and count and compare the ones you find to you list of addresses which have paid up.

    3. Re:Triangulation to locate sources? by Macgyver7017 · · Score: 5, Insightful

      Not to be rude, but I call BS.

      The number of reflections that an HF signal would undergo in a decade of bouncing around anything the size of the earth, is simply astronomical. The efficiency of reflection would have to be similarly astronomical.

      Let alone enough of the signal staying intact to still hear several seconds of it (enough to identify it as Vietnam chatter).

    4. Re:Triangulation to locate sources? by BitHive · · Score: 1

      This can't be true. I refuse to believe that you picked up a broadcast that had been bouncing around the atmosphere for hours, let alone decades.

    5. Re:Triangulation to locate sources? by PapayaSF · · Score: 1
      Given the right atmospheric conditions, you can pick up the signal decades later:

      Sorry, I think your buds in Army Signals pulled a prank on you....

      --
      Q: What does the "B." in Benoit B. Mandelbrot stand for? A: Benoit B. Mandelbrot
    6. Re:Triangulation to locate sources? by Phrogman · · Score: 3, Interesting

      I have not experienced this firsthand when I was in Military Signals, but I have certainly been told it can happen - by my instructors, in class and apparently in all seriousness. Its pretty rare but evidently some signals can survive up in the ionosphere for extremely long periods of time. The example they mentioned was having heard message traffic over HF that apparently dated from an exercise shortly after WWII, but received in the late 80's sometime.

      I know I have heard a signal I sent, bounce right around the earth and come back to our receiver a few mins later. I also remember picking up a signal on Military frequences in Northern Ontario (I was in the Canadian Military) that originated down in Florida, evidently on a Taxi transmitter, judging by the conversation I had with the guy when I asked him to leave our channel.

      Radio is fascinating stuff, its a shame its losing its popularity to the Internet and computers, because its still a very neat and geeky technology.

      --
      "The first time I got drunk, I got married. The second time I bought a chimpanzee, after that I stayed sober" Arian Seid
    7. Re:Triangulation to locate sources? by Henry+V+.009 · · Score: 1

      Did they also send you to go look for a can of elbow grease?

      Yes, HF waves can bounce a few times through the ionosphere -- that's the whole point of using HF actually, but they lose energy each bounce. They only way people heard WWII-era broadcasts decades later was if they were rebroadcast.

    8. Re:Triangulation to locate sources? by AB3A · · Score: 1

      Umm, this phenomenon used to be called Long Delayed Echos. They could be delayed by as much as eight seconds. It was a very rare phenomenon. Most think the effect was an artificial accident, not a natural phenomenon. However, like all the Bigfoot theories, there is a suspicion that a signal could get trapped briefly between layers of the Ionosphere and make a few circuits around the earth. However, such delays are relatively short; not eight seconds long.

      --
      Nearly fifty percent of all graduates come from the bottom half of the class!
    9. Re:Triangulation to locate sources? by leighklotz · · Score: 1

      On September 2, 2006 I heard my own signal, a good fraction of a second later, twice in the span of a few seconds.

    10. Re:Triangulation to locate sources? by Ernesto+Alvarez · · Score: 1

      Shouldn't it be possible to use a directional antenna or some similar technology, from several points around the globe to locate the source of the transmissions with a reasonably high degree of precision?


      I don't even have a SW radio, so everyhing I'm saying is second hand at best, but it's been done already. The SOURCE is not a very useful piece of data, though.

      The Lincolnshire Poacher is almost certainly being broadcast from a RAF base in cyprus. Now you know that whenever LP is active, british intelligence might, or might not, be sending a message to one of its spies. You don't know the message sent, the recipient or even if it was just junk to fill a scheduled broadcast. And the british make it bloody obvious it's them, go pick a mp3 or ten from the net, and keep in mind that the LP is an english folk song.

      I don't know if there's something special about wyoming that you're mentioning it, but in that case what I would be thinking is: "The CIA is sending another message". The only weird thing is that wyoming is inland, and facing canada, but there might be something interesting about that location (next time, replace "wyoming" with "florida"). Anyway, if you want to know who's broadcasting what, click here.

      The important pieces of data are the RECIPIENT or the MESSAGE, good luck finding any of these two.
    11. Re:Triangulation to locate sources? by samschul · · Score: 1

      In the mid sixties early seventies, I had a strange interview was interviewing for a position a an electronic technician, and during the interview the interviewers phone rings and he starts a conversation about a theory that states that sound waves exists forever. He then continues with the idea that sensitive equipment could be build that would recover these signals. All of a sudden he states that I was in the room, and this conversation was getting into secure areas. Afterword he dismissed me and I never heard from him again. All along I realized that their was some kind of BS going on, but I could never figure out why he was playing such a game with me.

    12. Re:Triangulation to locate sources? by zuiraM · · Score: 1

      If you wanted to do it, it's not all that hard, I think. Think along the lines of geocaching; a network of people interested in it place tons of small units all over the place, and some of them operate a series of transmitters with a known geographical location.

      The unit would have a receiver that can lock to a signal someone has requested a fix on, another for receiving the control information and a timing pulse, one for transmitting data back to the operator of the local hub, a local clock, some logic and a power source.

      You measure the signal strength, use the timing pulse to make sure the correct point in time is used for the sampled reception, and send it back. For instance.

    13. Re:Triangulation to locate sources? by yet+another+coward · · Score: 1

      Does the ionosphere act as a reflecting surface? If so, the signal bounces off the ionosphere at an angle. The tangential component of the Poynting vector should not change, and it is the important one for triangulation. Unless the ionosphere has a weird or highly variable geometry, triangulation should work. Can an ionosphere bounce really make a signal from the east look like it was coming from the west? I would be very surprised.

  49. EME/Moonbounce by Kadin2048 · · Score: 2, Interesting

    You definitely can, it's (as you stated) usually called "moonbounce" or EME, for Earth-Moon-Earth. I'm not sure that it's really a particularly useful form of communication, but that doesn't stop hams from doing it just for the hell of it. (Though I've wondered if there are some 'Mad Max' style disaster scenarios where EME would conceivably be useful...)

    To do it right you need a very directional beam antenna. There are particular regions of VHF that are known to be good for EME, because of the way they penetrate the Earth's atmo/iono/magnetospheres. However, people have done it on virtually all bands, from 6m into the microwave. (There is a neat page on 6m EME here, he claims that as of 2002 only 30 or 40 people have ever had successful QSOs, so if you want to be on the bleeding edge of amateur radio, that's where you go.)

    --
    "Ladies and gentlemen, my killbot features Lotus Notes and a machine gun. It is the finest available."
    1. Re:EME/Moonbounce by Vreejack · · Score: 1

      Moonbounce is silly, show-off stuff. It is certainly possible with old technology but it suffers from the flaws of requiring too much power and too much geometry. Both you and your partner have to be able to see the moon, and the farther away your partner is the less likely that is to be true at any moment. Granted, it should be possible for at least a small period every day as the earth rotates, but this "appointment" would have to be set up beforehand every day to compensate for changes in the moon's position, making it extremely unreliable. All the moon bounces I've ever heard of were random contacts with strangers or were set up beforehand on a different channel (and still didn't work most of the time).

      --
      "Will future ages believe that such stupid bigotry ever existed!" -- Ivanhoe
    2. Re:EME/Moonbounce by wwphx · · Score: 1

      Radio moon bounce is so lame, my wife bounces lasers off the moon a dozen or more times a month.

      http://en.wikipedia.org/wiki/Apache_Point_Observat ory_Lunar_Laser-ranging_Operation

      --
      When you sympathize with stupidity, you start thinking like an idiot.
    3. Re:EME/Moonbounce by AB3A · · Score: 1

      EME can be made to be very reliable. However, it won't be available for much of the time. It suffers from several problems: First, it demands a great deal of power and a very sensitive receiver. Second, the data rate you can send over such a connection is pretty slow. You'd have difficulty getting a 50 baud teletype to work on a system like this. Third, it requires a fairly stable frequency source.

      What is a minimalist system? Well, I've heard that some folks using DSP with a 100 Watt power amplifier, an eight element yagi with switchable polarization and nearly perfect lunar/earth position can recover their own echos.

      This is not a system for the faint of heart. If you were to gear up this way, you'd be better served using a more available and reliable method such as Troposcatter.

      --
      Nearly fifty percent of all graduates come from the bottom half of the class!
  50. Get Lost by da007 · · Score: 1

    >: 4 8 15 16 23 42

    The fate of the world depends on you posting these numbers to slashdot every 108 minutes.

    Thanks,
    Hanso

  51. 8675309 by feranick · · Score: 1

    codename: Jenny. Passphrase: Tommy Tutone

  52. This first number by Weaselmancer · · Score: 1

    ...is a longitude.

    --
    Weaselmancer
    rediculous.
  53. Yosemite Sam station in the US by leighklotz · · Score: 2, Interesting

    Lest you think all these secret stations are foreign, here's the story of Yosemite Sam, a station that transmitted "I'm a gonna get you, you varmint!" followed by a quick digital BRAP sound, and how it was traced by enterprising hams to a US military-industrial facility.

  54. The HELLO WORLD troll. by Kadin2048 · · Score: 1

    Has anyone ever done any sort of an analysis of the HELLO WORLD trolls? I was always curious as to whether they're truly random, or whether they're some sort of encrypted or obfuscated text. Seems like if you could get enough of them, it might be possible to analyze them and get a better understanding of what they are. Or at least tell whether they're somebody's idea of a practical joke (some sort of weak cipher designed to be broken) or a modern cipher or one-time pad.

    I was disappointed to note that they've removed the section about the HELLO WORLD troll (and most of the other interesting Slashdot phenomena) from the Wikipedia page, which used to have links to a bunch of them.

    --
    "Ladies and gentlemen, my killbot features Lotus Notes and a machine gun. It is the finest available."
  55. Cuban spy station uses Morse Code (cut-numbers) by leighklotz · · Score: 1

    The Cuban station mentioned in the article sounds like the cut-numbers station, which sends 5-letter groups that are morse code numbers, but shortened.
    So instead of 1 (*----) they send A (*-), and instead of 2 (**---) they send U (**-), and 3 (***--) becomes V (***-), etc.

  56. Not code but keys? by plopez · · Score: 2, Insightful

    OK, what if the sequences are one time pad keys or other crypto keys? Then there would be nothing to crack, there is no message. The end user and the transmitter agree on a protocol, e.g., only use the sequence generated at 1620 UTC. Then after each day that sequence is discarded.

    The info is then sent by email, ground mail, radio, etc. encrypted with that key.

    So not only would there be nothing to crack, but the vast majority of the numbers would just be noise.

    --
    putting the 'B' in LGBTQ+
    1. Re:Not code but keys? by ChadN · · Score: 1

      Hmmm, so you are suggesting a rather novel form of cryptography, in which the secret (ie. the key) is broadcast in the clear. Interesting... But totally insecure, and thus probably not worth the effort that long distance radio broadcasting requires.

      --
      "It's overkill, of course. But you can never have too much overkill." - Anonymous Slashdot Coward
    2. Re:Not code but keys? by plopez · · Score: 1

      One technique I heard of which made me think of this was using almanac entries as keys. A protocol is set up, e.g., on 12/30 you go to page 1230 of an almanac, then reaq down 5 entries. You may end up with the wheat production of the Ukraine for 2002 as the basis of your key.

      For all intents and purposes the key is 'in the clear' but unless you know how to generate it you are totally in the dark.

      --
      putting the 'B' in LGBTQ+
    3. Re:Not code but keys? by ChadN · · Score: 1

      I've heard of those techniques, and they can actually be quite secure I believe (assuming the shared secret is sufficiently unguessable). Keep in mind the reason it is so effective, is because nothing is broadcast.

      --
      "It's overkill, of course. But you can never have too much overkill." - Anonymous Slashdot Coward
  57. Why would the feds broadcast in the US? by Myria · · Score: 1

    Why would the American spooks broadcast such things in American territory? Why are they going to spy on in their own territory?

    The primary tactical advantage of broadcasting is that it does not reveal who is receiving the message - on a large scale you cannot find the few people who are listening to the broadcasts. This worked well for the saboteurs in Vichy France.

    What benefit would you get on friendly territory?

    Melissa

    --
    "Screw Sun, cross-platform will never work. Let's move on and steal the Java language." - Visual J++ Product Manager
    1. Re:Why would the feds broadcast in the US? by igb · · Score: 1
      What benefit would you get on friendly territory?
      The fact that you don't even reveal the target.

      The BBC transmitted ideoforms (which were nothing like a secure as is often claimed, but that's another story) to the French resistance via transmitters aimed at France, yes, but in 1943 it was no secret that the British were keen to help the French resistance, and it was no secret that there was a war on. Today, the list of countries in which the CIA have agents is itself interesting intelligence.

      ian

  58. Creepy? by mjmeyer · · Score: 1

    Not as creepy as an MD5 checksum.

  59. 4815162342 by sam0vi · · Score: 1

    4815162342 what?

    --
    When my Karma level reaches 0 I feel in piece with the Universe
  60. Our *new* overlords... by The+Dotmeister · · Score: 1

    I for one welcome our new Dharma Initiative/Hanso Foundation overlords.

  61. So many posts, no one has any idea, eh? by master_p · · Score: 1

    No one has any idea what these number stations are for. There was only one post that mentioned that they keep the channels occupied in this way.

    A real mystery on our hands...why hasn't any journalist try to interview personnel from these stations? they can not be found?

  62. The **REAL** source of the numbers: by Anonymous Coward · · Score: 0

    $ cat /dev/random | od -d
    0000000 44861 24463 27411 63733 923 2320 30799 6773
    0000020 15073 49403 34050 30446 64169 55874 50166 578
    0000040 52122 33340 29292 25946 12090 32538 16436 56851
    0000060 4308 51330 33500 60065 42297 15480 41734 48922
    0000100 26139 32551 12345 5375 56736 2246 15226 15503
    0000120 38370 56665 22823 53801 29420 52343 56713 63720
    0000140 39529 53935 64657 60112 8309 38789 51823 26533
    0000160 27458 8548 58528 22448 566 7408 50269 11947
    0000200 61260 33187 36703 59854 51138 13947 62274 24150
    0000220 20773 4642 40180 40570 3646 11936 26718 7876
    0000240 8587 42667 45243 17710 56362 16606 16919 63247
    0000260 37960 28875 19628 12323 23320 4985 44964 23526
    0000300 33470 17054 8891 28931 59153 24617 33775 10443
    0000320 36086 12801 49810 54515 40104 36856 16482 29448
    0000340 60702 13686 35316 24215 8780 59142 52885 37912
    0000360 36537 47625 32982 63748 20631 33248 44324 228
    0000400 48636 27661 22426 63422 39525 44553 9084 43212
    0000420 27193 64294 15114 18778 4856 38298 23296 5047
    0000440 38354 47682 20214 6906 10058 25771 778 43583
    0000460 45710 5708 52664 47667 33310 15816 56341 50350
    0000500 25527 25100 45844 28883 56629 24571 64227 16336
    0000520 3957 19412 13898 1025 63880 42455 40742 44593
    0000540 55417 29999 30644 14005 29567 39929 20657 58152
    0000560 52580 27791 22793 37578 43684 49665 58398 31041
    0000600 61896 15080 64829 62694 17055 18169 58824 53430
    0000620 22526 56617 41545 24848 44889 38466 39472 54927
    0000640 25332 42434 32998 37080 64113 24865 31620 23166
    0000660 13613 16702 3578 8921 44862 54909 56065 25561
    0000700 60396 57468 38470 32917 40534 57998 53715 15195
    0000720 8928 34967 16258 52072 54777 24717 51490 4853
    0000740 47095 48384 37876 62391 37538 58973 27590 37970
    0000760 12311 48452 44741 3783 9456 32836 31829 36270

  63. The Moscow Radiotelephone Station by AB3A · · Score: 2, Interesting

    Years ago, some friends of mine used to find sport listening to "Numbers Stations". One in particular, during the Soviet era, used to identify itself as "The Moscow Radiotelephone Station." They would get on the air and proclaim "This data is for Testing Purposes Only, from the Moscow Radio Telephone Station, Book xx, Page yy, Group zz..." and then proceed with five letter cipher groups in perfect english phonetics. (Substitute xx, yy, and zz with whatever numbers of book, page and group they were sending at the time).

    They were once reputed to have closed their broadcast on New Year's Eve with "and greetings to our friends in the CIA." Who says spies have no sense of humor?

    --
    Nearly fifty percent of all graduates come from the bottom half of the class!
  64. Wullenweber antenna by pestie · · Score: 1

    Looks like the site used to have a Wullenweber antenna, judging from the big circle with the smaller concentric circle inside, and the little building in the middle. Those are being decommissioned more and more these days, though. It's sad, 'cause they're incredibly cool, but there's just not much need for high-precision HF direction finding any more.

  65. Nope, that's still BS by Dion · · Score: 1

    If you claim that your signal had been flying for just one minute then it would have circled the globe over 400 times:
    http://www.google.com/search?hl=en&lr=&q=c+*+60+s+ %2F+40076+km&btnG=Search ... or it could have bounced between the moon and the earth almost 50 times:
    http://www.google.com/search?hl=en&lr=&q=c+*+60+s+ %2F+360000+km&btnG=Search

    If you had claimed a few seconds, then that would have been likely as 2.5 seconds is the time it takes to bounce a signal off the moon once.

    In two minutes you can boucne a sigal off mars, but think about how small mars looks from this distance, you'd need a very powerful transmitter and a very directional antenna to pick up the signal again.

    Think about it; if signals really bounced around for several minutes inside the ionosphere, then all transmissions would be jamming themselves and all radio communication would be impossible.

    --
    -- To dream a dream is grand, but to live it is divine. -- Leto ][
  66. Re:How to be an effective sociopath by Fantastic+Lad · · Score: 1
    So basically. . . you are talking about pretending as a way of life in order to manipulate people into serving you more and better. How charming. I find it interesting to note that this is the mode of behavior used by sociopaths and psychopaths, except they do it because they don't have any other way to function within the human race. They wear the, "mask of sanity".

    As long as you're trolling. . , here's another freebie you might want to include in your dossier: If you deliberately disconnect yourself from the human race, you will not be connected when it comes time to share your thoughts as a writer. Being a writer means getting on the same wavelength as your audience and you cannot do this from the sociopath's perspective.

    To say that in another way; If you want to be a writer, you will need to have decent communication skills. Your post was difficult to understand, and that's not because the ideas themselves are particularly complex. Humans are very good at connecting dis-connected ideas, but only when they are dis-connected in a way Humans are good at connecting; that is, some types of random taste better than others. You can only know which is which by going native.

    Yes, there is an advantage to stepping outside the automatia of the average human head-space. Heck, everybody should strive to step beyond the automatic behavior they run around using 95% of the time. But to do this simply by becoming another type of machine is, in my opinion, A Bad Idea. Pretend to be something long enough and that's what you become. Be careful. Love is the key, not coldness.


    -FL

  67. OH my God by chaos4u · · Score: 1

    its horrible i just figured it out .....

    the number stations are linked to the mayan calendar !!

    they are broadcasting number sequences in a coutdown fashion or maybe trying to predict the exact time

    of the great cataclysm !!!

    these broadcasts are intended for the aliens so they know when its time to launch their take over of the world !!!!!

    whoda thunk it the aliens number stations and the mayans are all intrinsically linked TO OUR DEMISE !!!!!

    --
    Music the Paint dancefloor the canvas your body the brush
  68. Link for those who don't get it by Anonymous Coward · · Score: 0
  69. any chance this is mostly bogus? by wallet55 · · Score: 1

    OK, it is easy to imagine this being done in the past, before TOR and irc.... but there are so many more, less trackable methods, and the hobbyists make me wonder if this is now mostly fake, like crop circles.

  70. since no one else.. by Anonymous Coward · · Score: 0

    ..has said it, i will:

    i bought the CDs and listen to them a few times a year. it's just plain strange, which is why i like it. put them on and cook or clean or have a nice fuck. it's just different.