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Instead of shutting it down couldn't he put the miner in a faraday cage?
That would seriously crimp the profit margins, and probably make heat dissipation more difficult.
You dissipate the heat into the faraday cage. There's been a patent for this: https://patents.google.com/patent/US5901040
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 Brookly…
Earlier quoted context omitted.
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 Brookly…
It says the person shut it off and claimed it was an Antminer s5, not that the FCC verified what was causing the interference. Was there some additional 3rd party confirmation of what it actually was?
Instead of shutting it down couldn't he put the miner in a faraday cage?
Cages only block external em, they don't block internal em from getting out.
Instead of shutting it down couldn't he put the miner in a faraday cage?
Cages only block external em, they don't block internal em from getting out.
However, I think the fact that the Faraday cage is not symmetric when it comes to static electric fields is very interesting. Ask yourself this: how does the cage know what "inside" versus "outside" means? You know the old joke where a mathematician has to enclose the greatest area with a given fence and so she takes the fence and wraps it around herself and declares "I am outside the fence." Well, why can't I declare myself to be inside the Faraday cage and suddenly get the benefits of its shielding?
You might say that the difference is that the outside has the "boundary" of the universe and that makes it distinct from the inside. [1] But we don't yet know that the universe isn't finite and wrapped up on itself spatially, so if that were the difference, then isn't a Faraday cage experimental evidence in favor of the universe not being finite? I think therein lies the answer: if we wanted to actually use this as an experiment, we would have to place a charge outside of the Faraday cage and wait for sufficiently long time that the electric field is effectively static. However, for our experiment to work, we would have to wait so long that the electric field becomes static on the scale of the entire universe. And so no, the Faraday cage is not an experiment we can practically perform to measure the shape of the universe and the difference is the obvious one: the exterior is the larger one and is simply just "big enough" that we can't ever wait for the EM fields to settle down in the exterior like we can on the interior.
[1] Mathematically, this come in as the fact that the Poincare lemma https://en.wikipedia.org/wiki/Closed_and_exact_differential_... requires a "contractible" domain. The exterior of the cage is not contractible, so we are not guaranteed to be able to use the integral forms of Maxwell's equations over the exterior of the cage. However, the interior is contractible.
I presume this was only messin' with the folks next door or something? Could a device like this impact t-mobile in a meaningful way? If it was just one or two customers, t-mobile managed to get the FCC to actually go find this thing??
Earlier quoted context omitted.
The notice[1] says it was operating in the 700 MHz band. The wavelength for this band is 42.9cm. A few sources I found (StackExchange, Anandtech) say a Faraday cage is effective with a mesh 1/20th the wavelength. Surrounding the device with metal containing 2.1cm (0.85in) holes would probably work and only require minor modifications to support heat dissipation. Side note, now everyone knows Victor Rosario in Brookly…
> Victor Rosario in Brooklyn probably has a bunch of cryptocurrency... At 1155 GH/s, he has probably mined upwards of several dozen dollars worth of cryptocurrency this month. And an extra hundred dollars on his power bill, assuming it’s not included in his rent.
Earlier quoted context omitted.
That would seriously crimp the profit margins, and probably make heat dissipation more difficult.
The notice[1] says it was operating in the 700 MHz band. The wavelength for this band is 42.9cm. A few sources I found (StackExchange, Anandtech) say a Faraday cage is effective with a mesh 1/20th the wavelength. Surrounding the device with metal containing 2.1cm (0.85in) holes would probably work and only require minor modifications to support heat dissipation. Side note, now everyone knows Victor Rosario in Brookly…
EDIT: mixed them up, Spoondoolies ones had a nice mesh but the Antminer ones don't behind the fans. That 1" of plastic must be enough to let a significant amount through (or the power supply wires still)
Earlier quoted context omitted.
> Victor Rosario in Brooklyn probably has a bunch of cryptocurrency... At 1155 GH/s, he has probably mined upwards of several dozen dollars worth of cryptocurrency this month. And an extra hundred dollars on his power bill, assuming it’s not included in his rent.
Brooklyn apartments this time of year are often poorly heated. If you're paying for the electricity to run a space heater, it might as well produce bitcoins.