I find it odd that they did not reply to you in Mode A. Given that the warnings about excessive power can lead to random mode switching on AO-7 stretch back 37 years, one can only conclude that they wanted the satellite to be in Mode A.

73,

Paul, N8HM

On Wed, Jun 4, 2014 at 6:09 PM, Glenn Miller - AA5PK aa5pk@suddenlink.net wrote:

I was listening to AO-7 in Mode B as it rose at 2153Z.

At 2158Z, AO-7 suddenly switched from Mode B to Mode A.

At the time of the switch, there were two stations using excessive power (badly FMing) on the bird. Not sure if that was a coincidence or not.

Called CQ on Mode A in both CW and SSB with no response.

73 Glenn AA5PK _______________________________________________ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb