General > General Technical Chat
FAA Statement on 5G
rstofer:
--- Quote from: Marco on December 18, 2021, 11:17:45 pm ---Something funny from the earliest testing ...
--- Quote ---o Altimeter Type 1 did not operate successfully with 96 dB loop loss due to the presence
of in-band RA interferers, which are not a part of standard test configurations in
accordance with the MOPS. To resolve this, the loop loss was reduced to 94 dB.
o Altimeter Type 4 did not operate successfully with 96 dB loop loss due to the presence
of in-band RA interferers, which are not a part of standard test configurations in
accordance with the MOPS. To resolve this, the loop loss was reduced to 93 dB.
--- End quote ---
RAs don't work with interference from other RAs under the conditions they are judging 5G by ...
--- End quote ---
I wonder how close together 2 RAs can get. Following distance, etc. I have no idea how focused the beam actually is. I suppose if it were tightly focused, we wouldn't have this thread.
5G, OTOH, can be right next to the landing strip in a vehicle of some type.
Marco:
Can't be very focused because of plane attitude.
PS. I was assuming a bit much with cross correlation of semi-random sequences ... that's how newfangled GPS might do it, but this is still chirp mixing and beat frequency detection.
syau:
Canada government put restrictions on 5G service near airports.
https://mobilesyrup.com/2021/10/09/federal-government-restrictions-5g-service-airports/
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