Bob,
Yesterday and today I performed detailed doppler measurements on high PSAT passes, both on 70 cm and on 2 m. I found that yesterday the satellite was 10 seconds early and today 14 seconds early, compared to the ULTRASat3 TLE set.
I wonder why you think it is 6 minutes late. Maybe you were confused by the ASCII telemetry transmissions on 145.826 MHz of UoSAT-OSCAR 11, which passed about 6 minutes after PSAT?
73, Nico PA0DLO
On 2015-05-22 20:21, Robert Bruninga wrote:
I am finding that PSAT is 6 MINUTES behind the predictions of the previously provided original Launch TLE :
ULTRASat3 1 99993U 15140.67013889 .00040043 00000-0 10235-2 0 00009 2 99993 055.0004 339.9238 0251027 182.3314 074.3075 15.12517086000014
So until I get new ones. Just point at AOS and wait 6 miuntes.
Also, I had said not to TX PSK31 on the 10m u plink until you heard the downlink. Well, that was dumb advise, because the transponder does not come up unless it hears PSK31!
So the new rule is, Listen first. If not heard, TX anyway. If not heard then, Fix your problem, and try again?
We don’t know how the power budget will work out. So all we can do is watch.
Bob, WB4APR _______________________________________________ Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb