Apples and oranges Michael. The US domestic aviation environment is quite 
different than even Europe or and especially smaller countries overseas. And 
how long has 5G been out anyway? I hardly think that’s been available for 
enough of a safety track record in any country.

-mel via cell

On Jan 18, 2022, at 2:06 PM, Mel Beckman <m...@beckman.org> wrote:

 Shane,

Incorrect. Owning spectrum also includes the right to interference-free 
operation. And you imply that the FAA and airline industry has done nothing, 
when in reality it’s the FCC who has done nothing. the FAA sponsored extensive 
engineering tests that demonstrate the interference is a concern, and they 
notified all the parties well in advance. The fCC et al chose to do no research 
of their own, and are basing all their assumptions on operation in other 
countries, which even you must admit can’t really be congruent with the US.

-mel via cell

On Jan 18, 2022, at 2:01 PM, sro...@ronan-online.com wrote:

 The thing is aviation DOESN’T own this spectrum, they just assumed it would 
always be unused. And they failed to mention it would be a problem during the 
last 5 years of discussion regarding the use of this spectrum.

Shane

On Jan 18, 2022, at 4:25 PM, Mel Beckman <m...@beckman.org> wrote:



Michael,


Here’s a recent PCmag editorial on the subject, and it seems like many people 
want to put Internet speed above airline safety:


https://www.pcmag.com/news/faa-goes-in-hard-to-kill-mid-band-5g<https://www.pcmag.com/news/faa-goes-in-hard-to-kill-mid-band-5g?utm_source=spotim&utm_medium=E-mail&utm_content=replied-your-message&spot_im_redirect_source=email&spot_im_highlight_immediate=true&spot_im_reply_id=sp_K16VHJZS_072HRXmNRXaBpGnEYhzHF9p_c_226CAR9Wh7cKB5nT7ZEk9jsnt4P_r_23YHCX47igC6D698mkyoaTHv1ke&spot_im_content_id=sp_K16VHJZS_072HRXmNRXaBpGnEYhzHF9p&spot_im_content_type=conversation&utm_spot=sp_K16VHJZS>


This issue definitely impacts network operations for 5G providers, so makes 
sense to discuss here.


Here’s a comment from a friend of mine who has been both a network engineer and 
a pilot for United Airlines, posted on the article linked above:


“As a pilot, I can tell you that landing in instrument conditions is by far the 
most critical flight regime possible, during which the radar altimeter reports 
are a matter of life and death. There is no alternative technology, such as 
GPS, with the required accuracy and reliability, to provide approach guidance 
down to the runway in zero-zero weather, which is what the radar altimeter does.


The collective tech industry needs to admit that it made a huge blunder when it 
urged the FCC’s clueless Ajit Pai to “blow off” the clearly demonstrated FAA 
spectrum conflict. Sorry, passengers, but if you look out your window, you’ll 
see that aviation owns this spectrum and is entitled to interference-free 
operation. Replacing all radar altimeters isn’t going to happen in time for 5G 
anyway — it took more than ten years just to deploy anti-collision technology. 
So do what you should have done from the beginning: follow the FCC rules of 
non-interference to existing users, who have clear priority in this case.”


I tend to agree with him, and it looks like the 5G providers and FAA agreed 
last week to put some buffer safety zones around runway approaches at 50 major 
airports:


https://www.cnet.com/news/faa-lists-50-airports-getting-temporary-buffer-zones-blocking-new-5g-signals/<https://www.google.com/amp/s/www.cnet.com/google-amp/news/faa-lists-50-airports-getting-temporary-buffer-zones-blocking-new-5g-signals/>


-mel

On Jan 18, 2022, at 12:33 PM, Michael Thomas <m...@mtcc.com> wrote:


I really don't know anything about it. It seems really late to be having this 
fight now, right?

Mike

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