And the competition has/is putting up a gazillion cubesats to screw up
another of my little pleasures, astronomy. Bah. It's enough to make you
want to go out and stand right next to somebody.
Don
On 2020-04-17 14:37, Scott McGrath wrote:
That was +9.8 on the terrrestrial microcell transmitters,
Yes this seems to have been sold with the assurance that the magic
brickwall filters with 100db/octave slope will be included in every
one.
But the asian manufacturer of said devices will neglect to include
them.... and juice the power a wee bit to say +23...
Of course this will hose every GPS system for miles around and for
those of us who fly our multi thousand investment in ADS-B will be
rendered useless as the ADS-B still uses L1. In our club’s Cessna
172 the new ADS-B in/out compliant radio stack was 20,000 as we are
close to a lot of controlled airspace.
I dropped a note to AOPA on this. Because remember the entire
airway system is now supposed to be managed by aircraft exchanging
position, bearing altitude and rate of climb dynamically to each other
and ground stations instead of todays radar based system.
And say goodbye to our GPSDO’s
On Apr 17, 2020, at 2:59 PM, Bob kb8tq <[email protected]> wrote:
Hi
Was that +9.8 or -98 dbm ? :)
At -98 they probably *could* coexist with GPS. Not real clear how well
there
system would work at that level though.
Bob
On Apr 17, 2020, at 1:37 PM, Scott McGrath <[email protected]>
wrote:
Supposedly lowering Tx power on terrestrial network from +23 DBm to
+9.8 DBm will make everything better. Ajit Pai is listening only to
carriers and ignoring DoD who is stating it will significantly degrade
and/or make useless the GPS system.
Not to mention ADS-B which was installed at great expense by the
private and commercial aviation systems. And is totally dependent on
the GPS segments most affected by Ligado
Read and weep
https://arstechnica.com/tech-policy/2020/04/fcc-to-approve-5g-network-despite-military-saying-it-will-harm-gps/
_______________________________________________
time-nuts mailing list -- [email protected]
To unsubscribe, go to
http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com
and follow the instructions there.
_______________________________________________
time-nuts mailing list -- [email protected]
To unsubscribe, go to
http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com
and follow the instructions there.
_______________________________________________
time-nuts mailing list -- [email protected]
To unsubscribe, go to
http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com
and follow the instructions there.
--
Dr. Don Latham AJ7LL
PO Box 404, Frenchtown, MT, 59834
VOX: 406-626-4304
_______________________________________________
time-nuts mailing list -- [email protected]
To unsubscribe, go to
http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com
and follow the instructions there.
