[amsat-bb] PSAT2 Anomaly?

[Scott]

Nothing heard on 2m, Bob, but good copy on PSAT-2's 70cm SSTV downlink 2349
UTC.

https://www.dropbox.com/s/shbail5ai2t8ghs/psat2-sstv.png?raw=1

-Scott,  K4KDR

======================

On Fri, Aug 23, 2019 at 5:53 PM Robert Bruninga via AMSAT-BB <
amsat-bb at amsat.org> wrote:

> The usual PSAT2 downlink stopped after 0809z today in a pass over SE USA.
> Ground Stations are fine because its sister, USNAP1, is still downlinking
> via the usual ground stations.
> Both downlinks visible on http://aprs.org/sats.html
>
> A cessation of our Amateur packet telemetry design has never happened in 18
> years in space over 6 successful spacecraft other than the occasional low
> power crash which is fixed after the next eclipse on the next pass or so.
> But never a complete cessation.
>
> Since the UHF side is independent,  we welcome folks to listen to the UHF
> downlink 435.350 +/- Doppler and verify if that is working.  Remember, it
> must be in daylight for the SSTV downlink to be on.
>
> Fortunately we do have one report of an SSTV image at 1340z from Gustave
> LW2DTZ.  If we have another confirmation that UHF has been heard, then we
> can rule out a possible collision with space debris. (we get notificaitons
> of near conjunctions passing within 500m about every day or so, but after
> 18
> years we have come to ignore them.  Maybe this one hit?
>
> And it was working so well!
> Bob, WB4APR
>