recentpopularlog in

pierredv : mitchell-lazarus   7

FOIA Request Turns Up Info on Non-FCC-Compliant Transmitters. | CommLawBlog
"AT&T’s Puerto Rico transmitter was certified for operation over 5735-5840 MHz, but it was being operated at a frequency outside that range. Moreover, the transmitter lacked the required capability to listen for weather radar signals, and if it found them, to avoid the frequencies on which they occur – a feature called “dynamic frequency selection,” or DFS. The transmitter was manufactured by Motorola, which knows how to comply with FCC technical rules. But the transmitter was non-compliant when FCC inspectors found it in operation – on a non-certified frequency and lacking DFS – in AT&T’s Puerto Rico system. Moreover, the FCC has identified other non-compliant transmitters operating in the same band. In every case we know of, the transmitter was made by Motorola, and all came from the same “Canopy” product line. What went wrong?"
CommLawBlog  Mike-Marcus  Mitchell-Lazarus  TDWR  interference  5GHz 
september 2016 by pierredv
What 5G Engineers Can Learn from Radio Interference’s Troubled Past - IEEE Spectrum
"Radio interference is an old problem, but 5G and other forms of digital radio may tackle it in new ways"
IEEE-Spectrum  Mitchell-Lazarus  interference  5G 
june 2016 by pierredv
FCC Changes Stance on Open-Source Security - commLawBlog Jan 2010
"For the last few years, the FCC has been playing a Bob-like role. Not about mechanical locks, of course, but over security precautions for software defined radios (SDRs)." "That critique of open source elements is a slap in the face to the Alices of the world. One such group, the SDR Forum, asked the FCC to drop the last sentence quoted above, and to allow free publication of security mechanisms, so long as there is no intent to defeat the FCC rules. Surprisingly, at least to us, the FCC dismissed the request on a technicality. "
CommLawBlog  FCC  Mitchell-Lazarus  SDR  opensource 
january 2016 by pierredv
Who Needs the FCC? : CommLawBlog
"The recent government shutdown was applauded by some who believe that small government is better, and so, by extension, that no government at all must be better still. That got us to thinking. Not about the whole government, just the piece we know best: the FCC. Suppose the FCC closed for good. Would anybody notice? (Other than us; we’d have to find another line of work.) In other words: How essential is the FCC to a functioning society?" Lists three areas: 1. licensing 2. technical rules 3. international treaty negotiations
CommLawBlog  Mitchell-Lazarus  FCC 
october 2013 by pierredv
When Spectrum Auctions Fail - IEEE Spectrum, Mitchell Lazarus
"Now, however, the tradition of letting those engineers work together to squeeze in links is under assault. More and more, government regulators in the United States and the United Kingdom have been awarding licenses for fixed-microwave communications to the highest bidder, auctioning off the spectrum as they have done for many other wireless services. In short, auctioning point-to-point microwave licenses just doesn’t make much sense—except perhaps for a few very competitive corridors. Otherwise, it’s better to let engineers coordinate these point-to-point operations, a system that has used the radio spectrum very efficiently ever since the radar engineers of World War II began turning their dishes into extremely reliable cables of air."
auctions  Mitchell-Lazarus  point-to-point  microwave  microwave  IEEE-Spectrum  opinion  FCC  licenses 
april 2013 by pierredv

Copy this bookmark:





to read