Slashdot Mirror


User: n9hmg

n9hmg's activity in the archive.

Stories
0
Comments
536
First seen
Last seen
Profile
(view on slashdot.org)

Comments · 536

  1. First mistake on Rewiring Your Home Phone System? · · Score: 4, Informative

    You already ripped out the old cables. Did you do that just because you like using the phrase "fish tape"? Even if they were routed the old standard way - daisy-chained from jack to jack, if they could be pulled out, they were still useful.
    Really, the daisy chain is the telephonically-correct way to wire. If you do a star topology, like they did in my house, it's a big impedence mismatch. Of course, the fact that it's ok to have multiple unknown ringer equivalencies on the line means there's some leeway.

    Anyway, run the CatV or whatever from where you have signal to where you want it. Terminate it where you want it, and connect the other end to the signal source. Then, plug in the equipment you want on the phone system (at the aforementioned terminations). Note: There are several types of wall terminations. The only one's I've seen are screw terminal and insulation-piercing quick-installs. For POTS, the screws are better. If you're putting RJ45s all around, so each jack might be phone or ethernet, the quick-installs are actually a bit better for a while (the drier you climate, the longer that is). Note: You can use one CatV to carry ethernet AND up to two POTS signals. The blue and Brown pairs are dead in standard wiring, so you might as well split them out and make them available for other purposes. I wouldn't recommend it for 1000bT (in some implementations, all 4 pairs are used anyway), but for a home 10 or 100 network, it's just good economic sense. Radio Shack carries a dual-jack outlet - RJ45 & RJ-11 (though an RJ-11 plug will work just fine in an RJ-45 jack). Of course, if you're doing the whole house, you're probably buying from a real supplier(it took me 2 trips a week apart to get two of those wall-plates).

  2. Re:Only land sharks on Laser System to be Tested in Boulder, CO · · Score: 1

    Candygram!

  3. Re:security on Broadband Over Power Lines in Canada · · Score: 1

    Hrmm... an AC with insight!
    If they're goin to determine that providing poor broadband service in the places where other services are already available is more important than the licensed uses of the spectrum from 2-80MHz, they should cancel all the international broadcasting, radiolocation services, military communications, telemetry, aeronautical, maritime and land mobile communications, amateur radio, radio astronomy, radionavigation, time&frequency standard, and fixed link communications allocations and reallocate them to the power companies. Barring that, it's illegal. Even if NTIA doesn't inform the FCC that they are not permitted to allow it, the international sanctions will put us back in our place.... Yesterday, I made a 700 mile contact with 1W and a tiny antenna with no ground system. There's no way multi-watt signals in miles-long antennae(power lines are not transmission lines much above 1200Hz) won't interfere with services far beyond our borders.

  4. Re:experiments on What Could You Do With 120 Laser Pointers? · · Score: 1

    Of course, but then, NI3 can be set off by by a smile at 20 meters.
    Once on the graveyard shift, I made up a good batch of the stuff, very clean and even, and set the filter paper-full on a concrete pad where nobody could get to near it, about 30 feet from the break room. It was such a quiet, windless, and humid night, that it dried very evenly, and all went off at once, leaving nothing but a faint purple stain, which sublimated over the next day or so.

  5. An entire airport on Public BSOD Sightings? · · Score: 1

    A few years ago, a friend arrived to leave from DEN (Denver International Airport, sometimes referred to as "DIA" - they call it "International" because it's in Canada, or so it seems after the drive). On arrival at the concourse, he went to check his flight status, and saw that every monitor, as far as the eye could see, was BSOD. Quite the upgrade advertisement, eh?

  6. But I wonder about the sound... on Big Bang Really a Big Hum · · Score: 1

    ...www.npl.washington.edu made when we all hit it. It took quite a while for it to finally return a little html page replacing the .wav, telling where to get the actual file.

  7. Re:Not News on Methane Bubbles Could Sink Ships · · Score: 1

    Indeed not news. Did somebody just tell you it was brand new? ...and you just believed it? It's the context in which I first heard of methane hydrates, when I first got cable TV, about 1993.
    Next story: a changing magnetic field can induce an EMF in a conductor.

  8. Not a surprise on Microsoft Behind SCO Cash Investment? · · Score: 1

    I didn't have time to RTFA on the original story, and expected the usual knee-jerk "suspect MicroSoft" reaction, since I had it right away my self. It would be fiscally irresponsible for MS to fail to assist any effort to weaken the most popular kernel supporting a GNU environment, and of course they would have to do what they can to hide their involvement. USD50000000 is such a trivial quantity to a big investment house as BayStar, I'll bet there was no specific MS funding involved, and further, that nobody at MS actually suggested this move.
    If BS has any clue at all about customer service, they do what they can to make their customers happy, and their history shows that MS would not be dismayed at the idea of discarding USD50000000 to keep an intellectually bankrupt company able to press, and appeal, a groundless exercise in abuse of the judicial system. The amount is so small compared to the benefit to MS that that there's not even much upside to them in it being "Other Peoples Money"tm.
    We can rant and rave about this until we're blue in the face, but the fact is, it's legal, whether MS publically presented a check to SCO, passed a briefcase full of cash in a dead drop in a park in Sao Paulo, wired the 50M to Baystar with instructions to invest it in SCO and deny it, or told BS they'd buy them and fire everybody unless they did the investment without further investment from MS. It's not right, and they're going down no matter what they do, but it's legal.

  9. Re:I guess when you have suicide bombers . . . on Israeli Government Suspends Microsoft Contracts · · Score: 1

    "An eye for an eye and the world is blind."... is a powerful statement against the petty, moronic "500 years ago, they assassinated our king in revenge for our massacring a border village, now they all must pay" bullshit.
    The great soul was smart enough to understand deterrence, punishments, rewards, behavioural psychology, etc.. If India had been occupied by a less-humane and reasonable people, his reasonable, humane approach would have been met with absolute destruction... and, he wouldn't have wasted his people's lives on it.
    I still remember Woody Morgan. I met him as he attacked me outside the choir room, at the start of 10th grade. I tried to find out what the conflict was, but was met with silence when we were supervised, and more violence when we weren't. I adjusted my schedule to avoid him, and he followed. I had to fight back three times (and be punished for turning it into a fight, the first two times) before he was finally sent away. It was nice to have a higher authority to take over and administer justice. I feel so badly for the poor people who are forced to perform the violence themselves in order to defend themselves. Can't we just "evict" the evil people from our planet? I don't mean "evil" as it is often used, in the form of "anyone who does not obey the commandments of our leader", but rather as the inverse of that... those who seek to force others to "obey the commandments of our leader". Mightn't we all just leave each other the fuck alone?

  10. A free alternative on Recommendations for RPN Calculators? · · Score: 1

    #!/usr/bin/perl print eval(join("$ARGV[$#ARGV]",@ARGV[0..($#ARGV-1)]))," \n" ;

  11. Re:You couldn't operator with out one. on Privacy - Ham Callsigns Lookups on FCC Database? · · Score: 1

    The operator license can, in fact, have a P.O. box, and indeed must, in some cases (if the mailing address is a RR, for instance), but the station license (all part of the same total license, and required to go along with the operator license) shall not be issued without a geographic address. My old one was along the lines of "South side Henry County road 200 north, 1/3 mile E of intersection with 500 east, Henry County, Indiana", while my operator license (the one in the callbooks) was "RR4, Box 306, New Castle, IN 47362". lat&long would also be acceptible, and it's much easier to find that out now.

    The primary reason for a geographically identifyable station location is a bit archaic now, honestly. Long ago, almost all stations were big and heavy, and tethered to very large antennae (what I wouldn't give to be permitted a big antenna), and few in number, so illegal operation was relatively easy to track down - a couple of FCC monitoring sites would provide beam headings, and if there was only one ham in that area, he'd get a notification of violation and whatever else they did back then. If necessary, a mobile RDFing unit would be dispatched to the intersection to narrow it down.
    Today, 90% or more of my operation is mobile, portable, or pedestrian mobile. Anybody doing something really illegal would just set up away from his home, get his jollies, pack up, and leave... not that the FCC can do anything about enforcement any more, anyway. There's even a lot of illegal operation in public service bands now, with idiots jabbering away blocking fire crews from communicating, and even when somebody takes the time to fully document the interference, warnings, and exactly who did it and when, with what equipment, judges don't consider it a serious crime, and usually dismiss the case and order the return of the equipment used in the crime. I find that especially ironic, as the lack of any previous conviction is often cited in the dismissal, which then becomes a sort of self-fulling observation.
    Anyway, I'm personally not cowardly enough to worry who figures out where I live. If you enter invited, through the front door, welcome. If otherwise, you'll end up co-starring in my or my wife's writeup in "The Armed Citizen" column.

  12. Re:seems clear cut to me on Apple Sued Over Rendezvous Trademark · · Score: 1

    I suppose that to someone who knows nothing about computers and networks, a network configuration system might appear to be the same thing as a messaging system. With that caveat, I must point out that a better analogy would be for McDonalds to sue McData for copyright infringement, because customers go to McData expecting to buy a tasty snack and end up buying high-end networking equipment, thus siphoning off McDonalds' business.
    Of course, "ZeroConf" is a more descriptive name than "Rendezvous", but that's none of my business.

  13. Re:Fark says it best... on Florida Proposes Taxing Local LANs · · Score: 1

    I wish I hadn't already commented in this thread. So much of it was mindless twaddle that I didn't want to burn a mod point on it. Alas...

  14. Re:Fark says it best... on Florida Proposes Taxing Local LANs · · Score: 1

    he could stop enforcing those laws
    Selectively enforcing laws based on ones own personal preference is morally repugnant.
    On top of that, can you imagine him ordering the DEA to stop enforcing those laws? Of course, the agents will continue to follow their charter. Then, Bush starts demanding resignations from people doing their jobs?
    That said, I would like to see him express a preference, which could set up a rhetorical climate in which sensible changes could be made to the law. It's logically inconsistent that I am allowed to drink beer but nobody can burn one. Either give them their pot or take away my alcohol. Some, like my dad, argue that pot is bad for the lungs, and they're right. So, either take away the tobacco or give back the pot.
    Does anyone remember that this thread is about taxes on LANs? I love /.!

  15. Re:Fark says it best... on Florida Proposes Taxing Local LANs · · Score: 1

    I hope I don't get sued by Monsanto.
    That's not as funny as it sounds. They actually go about trespassing in people's bean fields spraying plants with glysophate. They follow up a week or so later, and if the plants didn't die, the farmer is required to prove that he paid for fresh seed that year - they don't permit the ages-old practice of planting part of your crop. They also assert IP rights over contaminatory cross-pollenated plants, so a farmer who's been maintaining his own true-breeding strain for years can lose the right to plant it if some of it gets the gene for glysophate resistance. Monsanto has purchased special privileges from congress permitting it to press and win these ridiculous claims.

  16. Re:Fark says it best... on Florida Proposes Taxing Local LANs · · Score: 1

    ...and, they didn't define it as 3, but 4. Something about rounding up and "giving good measure".

    *hangs head as former Hoosier*

  17. Re:Ghost or RAID? on Simple Windows Backup to CD/DVD? · · Score: 1

    Just turn off ssh compression for this operation. By default, it IS off, but your ssh_config may turn it on. Then, run the gzip wherever it'll finish the whole process faster. A slow network will bias the choice towards the sending side.

  18. Re:Interference from boradband on During Blackout, Ham Radio Shined · · Score: 2, Insightful

    Think of all the amateur astronomers whose telescopes became useless due to light polution. It didn't kill off amateur astronomy, but it meant that you had to really want to do it to go for a drive.
    That's a stronger analogy than you realize. Lots of people are afraid of the dark, and so they shine light not only where it's needed, but also up into the sky, where it's not needed. Vast quantities of fossil fuels are being turned into greenhouse gasses AND blotting out the sky. Yes, it's nice to have light at night, but it's not necessary to shine it into the sky. Yes, it's nice to have broadband, but it doesn't have to come at the expense of better uses of the spectrum. Light fixtures can direct the light DOWN, and run only enough intensity to show what needs to be shown (to minimize reflected waste), and broadband networking can be run through efficient transmission lines so it doesn't leak so badly.
    Now, if we're just going to reassign the entire spectrum to data communications, without regulation, that would at least be logically consistent, though a bad idea. Allowing one special interest to destroy the entire resource is just a bad idea.

  19. Re:Eschew homogeneity on During Blackout, Ham Radio Shined · · Score: 1

    That's precisely the analogy I was going to make. If we're all forced to communicate only with the commercial services, then we all go silent when they go down. Even if the cell phone networks switch to alternate power and microwave linking, there's no coordination to minimize interference - indeed, no mechanism to do so. Everybody tries to call, and the system chokes.
    Hams work not only on the technical part of the hobby - building, modifying, and maintaining rigs and antennae, and experimentation with propogation modes and modulation schemes, but also the interactive part of communications. Listen to some of the big nets, where you have hundreds of people all on the same frequency, some big guns running 1500 watts into elaborate antenna systems, all the way down to pipsqueaks like me running 5 watts into a portable whip from a trail in the mountains. Everybody cooperates, strong stations who can hear weak ones do relays, and all the messages get through. Now, that's flexibility.

  20. Re:Power line emissions on During Blackout, Ham Radio Shined · · Score: 1

    Besides that, who's going to bother building and maintaining a system when you can use it only during a disaster? I'm not one of those loonies who spends all his off time preparing for the end of the world, and neither is anyone else I know... well, anybody I hang out with, anyway. If we can't use it, we won't pay for it.

  21. That's quite an improvement on Satellite Views Of The Blackout · · Score: 3, Interesting

    Now, if we can just shut off the rest of the outside lights... I'll bet some children saw stars for the first time in their entire lives.

  22. Re:Debian! on The Increasing Cost of Red Hat Linux? · · Score: 1
    I agree, but it'd be better to put in the apostrophe rules directly. Some moderator thought you were offtopic, moreso than is debian's birthday.
    Dave Barry did a really great rant on the topic:
    Dear Mister Language Person: What is the purpose of the apostrophe? Answer: The apostrophe is used mainly in hand-lettered small business signs to alert the reader than an "S" is coming up at the end of a word, as in: WE DO NOT EXCEPT PERSONAL CHECK'S, or: NOT RESPONSIBLE FOR ANY ITEM'S. Another important grammar concept to bear in mind when creating hand- lettered small-business signs is that you should put quotation marks around random words for decoration, as in "TRY" OUR HOT DOG'S, or even TRY "OUR" HOT DOG'S. -- Tips for Writer's
  23. Re:seems like an easy project on Roomba Competitor Slightly Lacking · · Score: 1

    RoboSweep toy,
    Actually, you hit it on the head. That exact mechanism has been around since at least 1966, when a little toy locomotive used to terrorize mmy three-year-old self at my grandparents' house. It used exactly that same mechanism.
    Now, that said, if you outfitted a machine with such a drive, equipped with an effective vacuum cleaner mechanism and an infinite supply of electricity, and let it run forever, it would eventually remove a significant portion of the dirt in a small unobstructed circular room. The problem with such mechanisms is that they tend to find certain ... "resonances"? in a room, particularly if there are things such as chair legs, in the way. I took the aforementioned toy, once I understood how it worked, and set it in the utility room with a little book, to see how long it took to get to the book. After a half hour or so, as its batteries were dying, I realized that it was spending most of its time spirographing away in two corners.

  24. Re:Real Generals are never hawks on Building a Better Bomb · · Score: 1

    Most health & welfare infrastructure that we destroyed is already repaired, AND they can complain about what is wrong without being tortured for it.

  25. Re:Ham radio users on Hams Complain about Powerline Broadband · · Score: 1

    "Being an Extra, I can actually use all of those frequencies"? If you mean receiving, I agree. If you mean transmitting, then you're either using frequencies illegally, or using amateur allocations above 50Mhz. Either way, it's no different from what any licensed ham in the USA can do. The entry-level license gives all privileges above 50MHz, and no amateur license level adds privileges beyond that.