General > General Technical Chat
FAA Statement on 5G
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bdunham7:

--- Quote from: Marco on December 18, 2021, 07:10:37 pm ---That's more than enough time to replace the antiquated and bad equipment.

--- End quote ---

That's not even remotely enough time to redesign, recertify and replace avionic equipment.  And why should an existing user that met the standards in effect at the time have to accommodate a new user? 
Psi:
I wish ever country would get together and agree on global spectrum band usage to be implemented everywhere starting at like 2050.
I know its not going to happen, but we can hope.
Marco:
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 ...
rstofer:
And I have been thinking of this  as a US problem but, really, it's a worldwide problem because, sooner or later, every backwater airstrip in the world will have radar altimeters competing with 5G.  Whatever the resolution, it needs to become a worldwide standard.
coppercone2:
thats true because there will be ultra vulnerable planes if it is not standardized, think Die Hard 2. I would hate to see what happens in third world airports if this kind of stuff is not accounted for, malicious or accidental.
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