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<div class="moz-cite-prefix">On 1/18/22 1:25 PM, Mel Beckman wrote:<br>
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cite="mid:27C40930-39F8-4B9D-97A4-86A5F04EA4E5@beckman.org">
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<span class="s1">Michael,</span></p>
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<span class="s1">Here’s a recent PCmag editorial on the subject,
and it seems like many people want to put Internet speed above
airline safety:</span></p>
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<span class="s1"><a
href="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"
moz-do-not-send="true">https://www.pcmag.com/news/faa-goes-in-hard-to-kill-mid-band-5g</a></span></p>
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<span class="s1">This issue definitely impacts network
operations for 5G providers, so makes sense to discuss here.</span></p>
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<span class="s1">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:</span></p>
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<span class="s1"><i>“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. </i></span></p>
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<i><span class="s1"></span><br>
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<span class="s1"><i>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></span></p>
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<span class="s1">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:</span></p>
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<p>Is this the band that has really really short range for 5G? If
so, it doesn't seem like a very big deal to give them the airspace
on approaches. I mean, if you live under a flight path by the
airport, not getting fast 5G is hardly your biggest problem.</p>
<p>Mike<br>
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