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FCC Orders a Brooklyn Man To Turn Off His Bitcoin Miner Because It Was Interfering With T-Mobile's Wireless Network (arstechnica.com)

A New York City resident was ordered to turn off his bitcoin miner after the Federal Communications Commission discovered that it was interfering with T-Mobile's wireless network. From a report: After receiving a complaint from T-Mobile about interference to its 700MHz LTE network in Brooklyn, New York, FCC agents in November 2017 determined that radio emissions in the 700MHz band were coming from the residence of a man named Victor Rosario. "When the interfering device was turned off the interference ceased," the FCC's enforcement bureau told Rosario in a "Notification of Harmful Interference" yesterday. "You identified the device as an Antminer S5 Bitcoin Miner. The device was generating spurious emissions on frequencies assigned to T-Mobile's broadband network and causing harmful interference." The FCC told Rosario that continued interference with T-Mobile's network while operating the device would be a violation of federal laws "and could subject the operator to severe penalties, including, but not limited to, substantial monetary fines, in rem arrest action to seize the offending radio equipment, and criminal sanctions including imprisonment."

39 of 207 comments (clear)

  1. No FCC ID by The+Raven · · Score: 3, Insightful

    How much you want to bet that the Antminer S5 has no FCC ID, because they never bothered to get one.

    He could turn it back on, he just needs to put his miner inside a faraday cage of some kind.

    --
    "I will trust Google to 'do no evil' until the founders no longer run it." Hello Alphabet.
    1. Re:No FCC ID by BenFranske · · Score: 4, Informative

      Pretty much all commercially sold electronic equipment needs to be FCC certified for sale in the US specifically because they can cause interference like this. See https://www.fcc.gov/oet/ea/rfd... specifically the sections on unintentional and incidental radiators.

    2. Re:No FCC ID by Anonymous Coward · · Score: 2, Informative

      Just about everything emits broad-spectrum, just most objects are pretty quiet. For example, the radio astronomers at Green Bank WV had issues with the construction of their new telescopes in the late 1990s, because the spark plugs in the trucks of the construction workers coming into the site emitted enough radio that the other dishes would pick it up as they drove by. It doesn't have to have an antenna.

    3. Re:No FCC ID by PolygamousRanchKid+ · · Score: 2

      He could turn it back on, he just needs to put his miner inside a faraday cage of some kind.

      Like, inside a jail cell, in a federal prison . . . ?

      It boggles my mind how much electricity we are wasting on these cryptocoins. I mean, it's not like the miners are actually producing something that will be physically there afterwards.

      The electricity is all just more or less going up in smoke. But, if folks want to speculate with smoke, why not sell them some . . . ?

      "Would you like some mirrors as a side order for your smoke, sir . . . ?

      --
      Schroedinger's Brexit: The UK is both in and out of the EU at the same time!
    4. Re: No FCC ID by jo7hs2 · · Score: 2

      Indeed. They actually have to use diesel vehicles only within a certain area at the observatory for that reason.

  2. Meh. by The+Grim+Reefer · · Score: 4, Informative

    The letter states he can operate it if he fixes the interference. TFS makes it sound like the FCC won't let him mine bitcoin at all.

    1. Re:Meh. by pr0t0 · · Score: 2

      Yeah, I was wondering why not just surround the thing in a small Faraday cage and call it a day.

      --
      I'm sorry, but your opinion seems to be wrong.
    2. Re:Meh. by DontBeAMoran · · Score: 4, Funny

      But what if he wants to call his Faraday cage something else than "a day"?

      --
      #DeleteFacebook
    3. Re:Meh. by SuricouRaven · · Score: 5, Informative

      Faraday cages aren't magic interference stoppers. The emission here was most likely via the power supply cables (or, less likely, data), and those would have to pass through the cage.

      Here's how you fix it:
      1. Read an article on noise surpression, choke design, capacitive coupling in inductors, choke self-resonance and core material selection.
      2. Go ask your nearest ham to build you a noise filter.

    4. Re:Meh. by Junior+Samples · · Score: 2

      Power Supplies generally won't radiate at 700 MHz. Most power supplies that I've worked with don't radiate much above 30 MHz.

      The GPU is probably the culprit. A Faraday cage should do the job, but every wire entering or leaving the enclosure needs to be EMI filtered.

  3. Re:Mr. Tinfoil by Sarten-X · · Score: 5, Funny

    If the miner had its own tinfoil hat, there wouldn't have been any interference!

    --
    You do not have a moral or legal right to do absolutely anything you want.
  4. Waste of energy by TJHook3r · · Score: 5, Funny

    Disrupting emergency services, helping global warming, distributing child porn... Is there anything Bitcoin CAN'T do?

    1. Re:Waste of energy by Aaden42 · · Score: 5, Funny

      Yes. Hold a steady valuation for five minutes.

    2. Re:Waste of energy by gman003 · · Score: 5, Insightful

      Function as a useful currency?

    3. Re:Waste of energy by Kaenneth · · Score: 2

      Starbucks fanciest coffee is under 50 cents?

      'cause that's the median BTC transaction fee today.

  5. 700MHz... by b0s0z0ku · · Score: 3, Insightful

    700 MHz is in the 10s of cm range as far as wavelength. Should be easy to construct some kind of Faraday cage to block the interference (while still allowing for air cooling), with filters on the AC line and Ethernet to prevent them from radiating as antennas.

    1. Re:700MHz... by HornWumpus · · Score: 3, Interesting

      Plates? Please don't comment about things you don't understand. Openings have to be smaller than the wavelength of the noise being addressed. At 700 MHz easy. Wrap it in chicken wire, solder the edges, ground it, done. Doesn't have to be perfect.

      This isn't antenna design. Anybody who flunked basic physics can build a faraday cage.

      Shoplifters have had this down for years.

      Wires, especially bundled with grounds, longer than a few wavelengths (power cords) or made up of twisted pairs (ethernet cables) make very shitty antennas.

      --
      John McAfee 'It was like that time I hired that Bangkok prostitute; to do my taxes, while I fucked my accountant'
    2. Re:700MHz... by hankwang · · Score: 2

      I have been surprised how hard it is to make a cellphone lose signal. If I wrap it in aluminum foil and leave a hole big enough to see the wifi and cell signal bars, they barely drop. I'm out of aluminum foil, but my phone in a stainles steel cooking vessel with the metal lid just open far enough (1 mm gap) to see the screen shows 4 out of 5 bars for wifi and cell reception. I can even call my phone with the lid closed and it will ring.

      So, you didn't convince me.

    3. Re:700MHz... by adolf · · Score: 2

      I used to have a small Faraday pouch that was lined with silver-colored conductive fabric. I used it when my employer was tracking me with GPS on my dumb phone, including logging power on/off events. (When I say I'm at lunch, I'm at lunch and that's my business. It's also my business if I've taken a day off.)

      It worked fine, blocking both GPS (easy) and cell signals (less easy).

      I'm not sure what you're doing wrong with your tinfoil pouch, but Faraday cages are pretty well-understood concepts.

      And unlike Shrodinger's Cat, you can actively observe the behavior remotely. Look at signal levels in your wifi access point. Use ping on the device itself. Fire up any of a number of remote-access apps; see how it behaves. You don't need to see the screen in order to see what the device is doing.

  6. Re:Mr. Tinfoil by RobotRunAmok · · Score: 2

    He is from Brooklyn. How would he fit that tinfoil hat over his man-bun?

  7. Re:Mr. Tinfoil by sinij · · Score: 3, Informative

    If the miner had its own tinfoil hat, there wouldn't have been any interference!

    Only if it was grounded.

  8. Re:Fear uncle Charlie by rahvin112 · · Score: 5, Insightful

    Harshly worded letter? They'll fine him $10,000 and then seize the equipment and destroy it. Don't mess with the FCC where interference is concerned, he's lucky they gave him a warning instead of just outright fining him because they could have just hit him with the $10k fine and seized the equipment on the first contact.

  9. Re:Mr. Tinfoil by Jamu · · Score: 2

    Take them out of the metal shielding?

    --
    Who ordered that?
  10. Re:Why by BenFranske · · Score: 4, Informative

    Pretty much anything electronic can create RF emissions. See unintentional and incidental radiators at https://www.fcc.gov/oet/ea/rfd...

  11. Re:Mr. Tinfoil by SuricouRaven · · Score: 4, Interesting

    What you want here isn't just a shield, it's a choke - the emission was probably via the power supply cable.

  12. Re:Fear uncle Charlie by HornWumpus · · Score: 2, Informative

    You have obviously never filed an interference complaint with the FCC

    I used to be able to hear my neighbors shitty CB radio plus linear through my landline, TV, radio and microwave oven.

    I eventually put a pin through his coax, which apparently burned out his linear. Ha Ha!

    Uncle Charlie is useless and basically toothless. They only wrote the letter because TMobile was involved. Unless you have a HAM licence to protect you can, more or less, ignore them.

    --
    John McAfee 'It was like that time I hired that Bangkok prostitute; to do my taxes, while I fucked my accountant'
  13. Re:Why by Dog-Cow · · Score: 2

    All electronics create radio emissions. It's just that usually, they are too weak, or the wrong frequency, to interfere with anything.

  14. Re:Why by SuricouRaven · · Score: 2

    Either poor equipment design, or he modified it in some way. Miners usually have a buck converter inside, those things are awful for noise - they have a high-current square wave, which includes not only the base frequency but every harmonic of it too. There's supposed to be a filter, but if he is running it beyond design power levels that might not be enough.

  15. Re:Fear uncle Charlie by NicknameUnavailable · · Score: 2

    This, you really don't ever want to fuck with the FCC - they only even enforce things that are actual problems and this is down-right generous on their part compared to all the stories I've heard. They have a legitimate function and take it very seriously. The closest anyone ever came to successfully transgressing was that time the satellite internet+radio guys tried to buy politicians to use the GPS spectrum, until a general put a stop to it saying "no, this would break all our shit and leave us defenseless" and the company subsequently went under.

  16. Re:Fear uncle Charlie by rahvin112 · · Score: 5, Informative

    All the devices you list are part 15, they are required to accept all interference and that guy on the CB is protected unless you can show he's interfering with protected services. That 700mhz band in the story, it's a protected band and subject to the interference rules.

  17. Re:Fear uncle Charlie by Mysticalfruit · · Score: 5, Interesting

    You misunderstand the actual power of the FCC. Their threats are NOT empty. They have the power to levy fines, have right of entry powers, etc. They don't give a fly fuck about two CB channels cross talking... but fuck with spectrum that's being used by a commercial or governmental entity and they'll drop a fucking hammer on your head.

    I was once involved with a college radio station and due to an equipment malfunction (our attenuator failed) we were accidentally transmitting at a much higher power than we should have... the FCC showed up at a campus, exercised their right of entry, disconnected our receiver and then changed the locks. Needless to say, it was a fluckercluck.

    --
    Yes Francis, the world has gone crazy.
  18. Re:Mr. Tinfoil by Hetero · · Score: 3, Insightful

    Unfortunately, you will probably be modded down as troll or something while "sinij" is modded from +4 to +5 on his wrong answer. CORRECT on your part. Conducted emissions are always half the battle and generally easy to handle with EMI suppressors.

  19. Re:Fear uncle Charlie by bws111 · · Score: 5, Insightful

    It depends. If the transmitter is actually radiating on the TV channels frequency, then yes, the transmitter can be fined. However, if the problem is that his TV, telephone, and everything else are picking up legally transmitted signals then it is HIS problem.

  20. Re:Fear uncle Charlie by Trogre · · Score: 2

    You could hear it through your microwave oven?

    Please, tell us more.

    --
    "Nine times out of ten, starting a fire is not the best way to solve the problem." - my wife
  21. Re:Fear uncle Charlie by farble1670 · · Score: 2

    I eventually put a pin through his coax, which apparently burned out his linear. Ha Ha!

    And you're a psychopath. Have fun with that. Ha ha!

  22. The FCC actually enforced one of it's own rules? by pinkfalcon · · Score: 2

    That's the real story. FCC actually paying attention to it's own rules.

    Now if only we can get them to do something about 7.200Mhz.....

    --
    Real SUV's don't have cupholders
    It's 5:42 A.M., do you know where your stack pointer is?
  23. Re:Fear uncle Charlie by mysidia · · Score: 5, Interesting

    I used to be able to hear my neighbors shitty CB radio plus linear through my landline, TV, radio and microwave oven.

    The FCC has very limited resources to investigate interference complaints, so RESIDENTIAL users generally go by the wayside.
    Until they start interfering with a commercial radio service or public safety, at which point the FCC prioritizes a reponse --- i've heard the people who work for that agency say they try to have all complaints from businesses addressed within 10 days or less, and for public safety the time frame is 24 hours.

    So if someone's pumping out CB with an Illegal 1Kilowatt amplifier; pinning the coax doesn't sound too unreasonable -- CB users are not legally to be using ANY kind of amplifiers anyways - the FCC generally just isn't there to quickly solve your personal RF woes caused by a neighbor anymore, unless they're making trouble for many people...

    Unless you have a HAM licence to protect you can, more or less, ignore them.

    Um... your license, If you have one, isn't even at risk, unless you have a bad history or refuse to cooperate with them and
    allow station inspections or were being ridiculously negligent or doing deliberately doing something very bad like out-of-band
    emissions, emitting an excessive wattage at ground levels, or failing to suppress harmonics...

    Most cases of "interference" are just people using cheap electronics, TVs, Phones, etc which are inadequately shielded ---
    in this case, the legal responsibility is for the people suffering interference to buy equipment of good design, instead.

  24. Re:It's a start by bobbied · · Score: 2

    Now everyone throw out your cheap CFLs and LED bulbs. You are screwing up my ham radio. Come on, FCC. Where is your van when we need it?

    The van got traded in on a Prius that although has great mileage and a ready made power source, emitted too much RF to be able to make any kind of sensitive measurements within 100yards of it.

    Just kidding...

    Actually, the FCC doesn't have the field agents necessary to actually show up and do the monitoring they used to do. The enforcement bureau just doesn't have the people anymore. They might get around to actually doing something about a Ham complaint in about 10 years.... Consider the K1MAN debacle that went on more than two decades, only ending when the crazy old koot died before they collected the fine.

    --
    "File to fit, pound to insert, paint to match" - Aircraft Maintenance 101
  25. Re:Fear uncle Charlie by mikael · · Score: 2

    At least he would be able to afford to pay the fine.

    --
    Vintage computer adverts: http://www.vintageadbrowser.com/computers-and-software-ads