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FAA releases list of 50 airports to have 5G buffer zones
- Thread starter Mikey Radio
- Start date
This is nothing more than another urban myth churned up by Farsebook conspiracy chatter. T-Mobile has been on line with their 5G system, including around airports for well over a year. To date, no aircraft flight crew has complained, no planes have fallen from the sky, nor any of the other crazy 'could happen' claims have occurred.
Just because he 5G spectrum and radar altimeter frequencies are adjacent, doesn't mean there will be interference.
Just because he 5G spectrum and radar altimeter frequencies are adjacent, doesn't mean there will be interference.
Isn't T-Mobile running 5G mainly on all that 2.5GHz spectrum they picked up from Sprint? I think the issue here is the 3.8GHz C-band spectrum auctioned off early last year.
You're correct, but T-Mobile has been ramping up in that band in some areas recently. They've been in a position to crank up 5G much faster than AT&T and Verizon, because of having that head start in the 2.5Ghz space.
In the end, this whole dust-up will be a nothing sandwich.
Some coordination would have to be done with satellite companies to mitigate the mutual interference that would be likely to happen, since 3.7-3.98 GHz overlaps the portion of C-band used for downlinks. Analogue satellite receivers could have tolerated it (would have shown up as somewhat scratchy video and audio) but it would wreak havoc with modern DVB/Digicipher systems.
And will there be a day when it becomes illegal to sell satellite receivers without the 3.8 GHz section blacked out, so dirty evil subversive communist anti-American radio nerds can't eavesdrop on all the in-the-clear, unencrypted AMPS calls going on there? (And if you don't understand what I mean by that satirical remark, then you have some brushing up on your late 20th century American history to do, because I'm not going to explain it.)
And will there be a day when it becomes illegal to sell satellite receivers without the 3.8 GHz section blacked out, so dirty evil subversive communist anti-American radio nerds can't eavesdrop on all the in-the-clear, unencrypted AMPS calls going on there? (And if you don't understand what I mean by that satirical remark, then you have some brushing up on your late 20th century American history to do, because I'm not going to explain it.)
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Full disclosure, I was listening in on IMTS phone calls forty years ago, as a two-way radio tech. Later on I got my dirty evil subversive communist hands on a scanner that somehow had a diode clipped, to hear all the AMPS fun.
All that aside...by now I believe most of the satellite transport providers have moved their downlinks to the upper part of the band, away from the 5G activity. Those of us still using C-band downlinks are supposed to be putting filters on the feedhorn.
All that aside...by now I believe most of the satellite transport providers have moved their downlinks to the upper part of the band, away from the 5G activity. Those of us still using C-band downlinks are supposed to be putting filters on the feedhorn.
And you know, looking back on it today, in retrospect, it's funny and borderline hypocritical how in the late 80s/early 90s, the telecoms made so much static about 800 MHz radios that could tune the AMPS bands being this terrible social ill that absolutely had to be eradicated by any means necessary, even if that meant enacting arbitrary and unenforceable legislation barring one from tuning certain frequencies and mandating technical provisions for such. Yet nobody (back then, anyways) ever seemed to say anything about IMTS, 45/49 MHz cordless phones and paging, which were just as wide open and of which receivers were far more widely available.
We still had a 150 MHz IMTS channel opearting here (JP or YP, IIRC) into the mid-2000s until Qwest finally yanked the plug. I got my first scanner around 1996 or so, and over those 10 or so years I only heard people on it maybe three or four times. Last time I heard it, I happened upon a guy talking to somebody testing an old phone that was his dad's. I never heard anybody else after that, and I think they shut it down a few months later.
I acquired a PRO-2004 around 2013 or so at Salvation Army; stock, of course, that I did the obligatory diode clip-out procedure on, just so I could say I did it. Unlike my high-school years when I got my PRO-2005, by that point AMPS in this part of LATA 672 was long gone though there was that one private (?) system that I believe I mentioned some time ago, which last I checked is also probably gone. (I know I talked about it in passing here: » Analog Cellular Phone Calls 1988 The Weatherman's Dumb Stupid Homepage: No News, No Sports, Just the Weather…man) I think I still have that scanner, it's probably buried in the corner of my mom's basement along with my school cable modulator and some of my other old comms/audio/motocross equipment. Ironically, these days a "blocked" 800 MHz section, which was once an injustice, is now a convenience since it relieves the user and his thumb of constant button pressing when in search mode to skip through hundreds of channels of data hash noise.
We still had a 150 MHz IMTS channel opearting here (JP or YP, IIRC) into the mid-2000s until Qwest finally yanked the plug. I got my first scanner around 1996 or so, and over those 10 or so years I only heard people on it maybe three or four times. Last time I heard it, I happened upon a guy talking to somebody testing an old phone that was his dad's. I never heard anybody else after that, and I think they shut it down a few months later.
I acquired a PRO-2004 around 2013 or so at Salvation Army; stock, of course, that I did the obligatory diode clip-out procedure on, just so I could say I did it. Unlike my high-school years when I got my PRO-2005, by that point AMPS in this part of LATA 672 was long gone though there was that one private (?) system that I believe I mentioned some time ago, which last I checked is also probably gone. (I know I talked about it in passing here: » Analog Cellular Phone Calls 1988 The Weatherman's Dumb Stupid Homepage: No News, No Sports, Just the Weather…man) I think I still have that scanner, it's probably buried in the corner of my mom's basement along with my school cable modulator and some of my other old comms/audio/motocross equipment. Ironically, these days a "blocked" 800 MHz section, which was once an injustice, is now a convenience since it relieves the user and his thumb of constant button pressing when in search mode to skip through hundreds of channels of data hash noise.
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Yep, all of ours at work were done last year.
At one place I used to work, the engineers had an 800 MHz scanner with the upper/lower limits set so if one was bored, they'd hit the search button and listen into cell calls. I recall one of them found himself listening in on a co-worker who was bitching about him to the person they were chatting with. Oops!
I also recall back in the day a few guys searching for cordless phones in their neighborhoods using their scanners and exchanging details about who/what they'd found and on which frequencies. This also turned out badly when one of the guys was listening in on the cordless phone of a girl he was interested in and he decided to question her about a call he'd heard. Lucky for her she was smart enough to figure out how he knew what was said (if I'm not mistaken he was a volunteer firefighter and she'd heard him tell others he'd used his scanner to listen in on people) and from there forward, she used a land line for personal calls.
Major U.S. airline CEOs warn 5G could ground some planes, wreak havoc
Major U.S. airlines warn 5G could ground some planes, wreak havoc
The chief executives of major U.S. passenger and cargo carriers on Monday warned of an impending "catastrophic" aviation crisis in less than 36 hours, when AT&T and Verizon are set to deploy new 5G service.
Airline executives implore feds to keep AT&T, Verizon's 5G away from airports
AT&T, Verizon delay rollout of 5G near airports as airlines warn of 'incalculable' damage to economy
AT&T and Verizon will pause 5G rollout after airlines and shipping companies said "commerce will grind to a halt" if service is allowed near airports.
www.usatoday.com
And the ridiculous part of this whole Kabuki Theater? Nobody has even tested whether this could actually be a problem.
This is another example of engineers who understand radio and propagation at certain frequencies/bands having long retired from the FAA. Only to be replaced by lawyers who spend too much time reacting to members of the general public who consider themselves as 'experts', claiming that planes are going to 'fall out of the sky'. And where do these amateur experts get their information? Farsebook.
For all we know this whole theater is being drummed-up by Chinese trolls and bots posting said garbage on Farsebook because they're upset about banning Huawei from any 5G systems in the U.S. and Great Brittan.
This is another example of engineers who understand radio and propagation at certain frequencies/bands having long retired from the FAA. Only to be replaced by lawyers who spend too much time reacting to members of the general public who consider themselves as 'experts', claiming that planes are going to 'fall out of the sky'. And where do these amateur experts get their information? Farsebook.
For all we know this whole theater is being drummed-up by Chinese trolls and bots posting said garbage on Farsebook because they're upset about banning Huawei from any 5G systems in the U.S. and Great Brittan.
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