[amsat-bb] Re: HEO history question
ko6th_greg at hotmail.com
Fri Dec 2 23:25:19 PST 2011
Many Hams "used" RS-12/13 when it was below their horizon (often without knowing it), due their HF uplink getting bounced and bent around by the ionosphere before hitting the satellite. So, it wasn't necessary for the other station to be in the traditional satellite footprint to be heard.
Both RS birds (RS-10/11 and RS-12/13) were gems. I got infected with the satellite bug by RS-10. Fortunately, it's an incurable affliction.
> From: aa5jg at fidmail.com
> To: domenico.i8cvs at tin.it; amsat-bb at amsat.org
> Date: Sat, 3 Dec 2011 03:53:44 +0000
> Subject: [amsat-bb] Re: HEO history question
> I had forgotten about the RS satellites. Not sure if Wales would have been
> in the footprint from where I was at in Iowa at that time. I sure miss
> RS12/13. That was a great satellite to get on. Mode T worked very well.
> Wish they would put another one up like it.
> 73s John AA5JG
> ----- Original Message -----
> From: "i8cvs" <domenico.i8cvs at tin.it>
> To: "John Geiger" <aa5jg at fidmail.com>; "AMSAT-BB" <amsat-bb at amsat.org>
> Sent: Friday, December 02, 2011 9:47 PM
> Subject: Re: [amsat-bb] HEO history question
> > ----- Original Message -----
> > From: "John Geiger" <aa5jg at fidmail.com>
> > To: "AMSAT-BB" <amsat-bb at 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
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