But FCC? Can anyone explain? Miners do not emit any radio frequency, do they? They don't even talk to the network (computer does)
FCC regulations also cover devices that do not intentionally emit electromagnetic radiation (these are called unintentional radiators). Pretty much any electronic device sold in the U.S. needs to pass FCC regulations, and the seller must have a certificate saying so, issued by a certified testing facility.
Of course, the regulations on unintentional radiators are much more lax than the regulations on things like cellphones that are built to emit RF.
Testing on simple, unintentional radiators takes a day or two (as has already been mentioned), and can be quite affordable for devices that pass quickly. I've been through the process, and it's really quite boring. BFL's devices themselves will pass easily, but there is one caveat. When you go to test a device, it has to be set up in the way a typical customer would use it. That means a computer and the power supply need to be in the test chamber with the device; everything needs to be hooked up and running. While that may sound simple, "Well the computer is already FCC certified. No big deal!" you will quickly discover that most equipment fails FCC testing (despite being "certified"). That is easily the biggest time sink. That and the power supply ... oh god.
As for the consequences for not being FCC certified ... meh. If the FCC contacts BFL, they will have to present the certificate or be fined. It is highly unlikely the FCC will contact them.
To be clear, if the FCC received a unit in their facility on Thursday from some entity, it would most definitely be on this website on Friday:
The FCC doesn't receive your device (at least for unintentional radiators). You have to take it to a certified testing facility (private companies) to have it tested and certified. I don't recall even submitting paperwork to the FCC the last time I was in that rodeo, though the facility may have. Regardless, I doubt there's a list; it would be huge and expensive to maintain.
By the way, a product doesn't always need the FCC mark on it. In fact, it's illegal to put it on there, depending on what kind of device it is.
If you guys are unhappy with a company, seeking vengeance through an FCC complaint isn't the answer in my opinion. I would rather my tax dollars not be spent that way. Instead, vote with your wallet; ask for a refund and don't buy from them.