[amsat-bb] Re: AO7 calibration

2013-11-18 Thread Alan
Hi Bob, There are many reasons why the transponder "constant" varies somewhat. The temperature of the satellite is somewhat dependent on sun angle, periods of eclipse, etc. This usually results in a slow seasonal variation, most frequently seen in SSB satellites, but also in some cases in the

[amsat-bb] Re: AO7 calibration

2013-11-18 Thread B J
On 11/18/13, David W0DHB wrote: > Bob > > I have observed this also with AO-7 and VO-52 and to a lesser degree with > FO-29 > > Dave W0DHB I've had the same issue with Gpredict. 73s Bernhard VA6BMJ @ DO33FL ___ Sent via AMSAT-BB@amsat.org. Opinions

[amsat-bb] Re: AO7 calibration

2013-11-18 Thread David W0DHB
Bob I have observed this also with AO-7 and VO-52 and to a lesser degree with FO-29 Dave W0DHB -Original Message- From: amsat-bb-boun...@amsat.org [mailto:amsat-bb-boun...@amsat.org] On Behalf Of Bob- W7LRD Sent: Monday, November 18, 2013 10:00 AM To: amsat-bb@amsat.org Subject: [amsat-b