[amsat-bb] Re: AO-27 timer-drift

Patrick STODDARD (WD9EWK/VA7EWK) amsat-bb at wd9ewk.net
Thu Feb 1 08:28:44 PST 2007


> today I was listening 2 orbits of AO-27. The first (#69.611) was over S.Arabia.
> Note:  the Satellite it could be active  around ~12.40Z, but at this time  I heard
> with surprise the ended packet-sound ! Precisely at 12.41Z was "OFF".

KD6PAG was correct, suggesting a look at the AO-27 web site:


It looks like the TOPR was reset on the satellite yesterday, as the "TOPR
Epoch (UTC)" now shows 31 January 2007.  The web site has this bit of news:

January 31th, 2007 UTC
Allen, N5AFV is working from Honduras, Belize, Cozemel and from sea.
For the next few days, the schedule is shifted 7 minutes early but is
extended to 8 minutes ontime. The web site has the correct times.
Thanks you Allen for the contact from V31 land.
Also of interest is that N1XAU was heard on a pass today.

N3UC - one of the AO-27 control stations - commented on 20 January during
an AO-27 pass that the batteries were in good shape and the transmitter was
working well, and he had extended the repeater time for 2 minutes during one
eastern North American pass.  It's possible that he extended the repeater time
shifted the time a little earlier to allow more stations - especially
those further
south - a chance to work AO-27 while it is currently functional.  The
satellite must
be in pretty good shape, if N3UC went ahead and made these changes.

Good luck and 73!

Patrick WD9EWK/VA7EWK - Phoenix, Arizona USA

More information about the AMSAT-BB mailing list