----- Original Message ----- From: "John Geiger" <aa...@fidmail.com> To: "AMSAT-BB" <amsat-bb@amsat.org> Sent: Friday, December 02, 2011 8:58 PM Subject: [amsat-bb] HEO history question
> Back in late 1997 or early 1998 I was using a Kenwood TR9130 on 2m SSB. > One morning I was tuning from the FM to the SSB portion of the band, and > heard a station just below 146mhz. I tuned them in, and it was a station > from Wales! Obviously going thru a satellite as the 2 meter conditions > weren't that good that morning. I am now wondering what satellite it > probably was. Hearing it was enough to motivate me to eventually get into > satellite operations-that took a few years though. > > Anyways, what satellite was I probably hearing? I am guessing AO10 or > AO13 but were they operational at that time? > > 73s John AA5JG Hi John, AA5JG OSCAR-10 was launched in 1983 and it started to get problems with the main computer in 1986 OSCAR-13 was launched in 1988 and reientered because of drag in 1996 Between 1997 or early 1998 OSCAR-10 was operating time to time with low level signals in Mode-B, 2 meters downlink while OSCAR-13 was died. If you are sure about the time of your reception back in late 1997 or early 1998 I guess that probably you was hearing or OSCAR-10 or mostly RS-12 a powerful LEO satellite in Mode-KT with uplink in 15 meters and downlink in two bands at the same time i.e.10 meters in the Mode-K and 2 meters in Mode-T exactly from 145.907 to 145.953 MHz BTW at that time 23 april 1996 OSCAR-10 was still well operational in Mode-B because I have the QSL card from i8KRO for a QSO made through two satellites OSCAR-10 and RS-12 The uplink on RS-12 for i8KRO was in 21 MHz and the uplink for me on OSCAR-10 was in 435 MHz while the downlink for both of us was in 145 MHz Nice to remember ! 73" de i8CVS Domenico _______________________________________________ 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