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Brooklyn Bitcoin Mine Causes Static for T-Mobile Users

bloomberg.com

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Re: Brooklyn Bitcoin Mine Causes Static for T-Mobile Users

#4

Post by kiwidrew »

Somehow it doesn't surprise me that Bitcoin mining hardware is generating harmful RF interference.

If I was a miner, I'd be quite worried that someone with direction finding equipment could easily discover a hidden mining location. The FCC or another government entity finding you is kind of the best case scenario if you think about it... :)

Re: Brooklyn Bitcoin Mine Causes Static for T-Mobile Users

#5

Post by Mtinie »

A single S5 caused the interference? Something doesn’t add up with this story.

A fleet of Antminers, perhaps, but even that would be unlikely.

Edit (addendum):

Details about the stock unit’s noise output; Antminer S5 runs at 61 to 65 dB at 4 feet. Modified S5 with a higher-quality fan dropped the measured sound intensity to 48 dB[0].

Follow-up Edit:

I just noticed that I’d clipped a section of my response...which would have made it clear that my doubt was that the S5 put out emissions that interfered with T-Mobile. I referenced sound later, but only intended that to be a point of reference.

Whoops!

——-

[0] https://www.ccn.com/review-bitcoin-asic-miner-bitmain-antmin...

Re: Brooklyn Bitcoin Mine Causes Static for T-Mobile Users

#6

Post by Jtsummers »

Mtinie wrote: post #5

A single S5 caused the interference? Something doesn’t add up with this story. A fleet of Antminers, perhaps, but even that would be unlikely. Edit (addendum): Details about the stock unit’s noise output; Antminer S5 runs at 61 to 65 dB at 4 feet. Modified S5 with a higher-quality fan dropped the measured sound intensity to 48 dB[0]. Follow-up Edit: I just noticed that I’d clipped a section of my response...which wou…

Sound isn't the problem. It's RF noise creating the static.

Re: Brooklyn Bitcoin Mine Causes Static for T-Mobile Users

#8

Post by spydum »

fcbrooklyn wrote: post #7

I wonder if it wasn't the miner at all. Maybe the guy had an (illegal) cellphone jammer as well, and somehow managed to convince the feds that it was his antminer causing the trouble.

From the Article (the actual notice): https://apps.fcc.gov/edocs_public/attachmatch/DOC-349258A1.p... They identified the device, and the service impairment stopped when he shut it off..

"On November 30, 2017, in response to the complaint agents from the Enforcement Bureau’s New York Office confirmed by direction finding techniques that radio emissions in the 700 MHz band were emanating from your residence in Brooklyn, New York. When the interfering device was turned off the interference ceased. 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."

Re: Brooklyn Bitcoin Mine Causes Static for T-Mobile Users

#10

Post by ofcourseianal »

Mtinie wrote: post #5

A single S5 caused the interference? Something doesn’t add up with this story. A fleet of Antminers, perhaps, but even that would be unlikely. Edit (addendum): Details about the stock unit’s noise output; Antminer S5 runs at 61 to 65 dB at 4 feet. Modified S5 with a higher-quality fan dropped the measured sound intensity to 48 dB[0]. Follow-up Edit: I just noticed that I’d clipped a section of my response...which wou…

For some reason I don’t think they were concerned with 700MHz sound waves
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