Hi Armando, N8IGJ I agree with you.
Between 1997 or early 1998 OSCAR-10 was operating with low level signals in 2 meters, downlink Mode-B, while OSCAR-13 was already died. If John, AA5JG is sure about the epock of his reception back in late 1997 or early 1998 I guess that probably he was hearing or OSCAR-10 or better RS-12 a powerful LEO satellite in Mode-T with uplink in 15 meters and downlink in 2 meters exactly from 145.910 MHz to 145.950 MHz At that time 23 april 1996 OSCAR-10 was still operational in Mode-B because I have the QSL card received from i8KRO for a QSO made with him 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 RS-12 was funny because one evenig I was tuning 2 meters waiting for the AOS of OSCAR-10 when a very strong italian station in North of Italy comes on speaking in spanish with a station in South America, thing impossible to be heard on two meters because OSCAR-10 was still belove my horizon. A quick investigation discovered that both stations where transmitting in 15 meters between 21.210 and 21.250 MHz and RS-12 was overhead to me in Europe so their signals were translated by RS-12 but most interesting the South American station was able to get into RS-12 by virtue of the ionospheric propagation so that I was able to receive both of them through RS-12 while the South American station was weaker and affected by a very fast QSB Nice to remember the RS satellites ! 73" de i8CVS Domenico ----- Original Message ----- From: "Armando Mercado" <am25...@triton.net> To: <amsat-bb@amsat.org> Sent: Monday, December 05, 2011 3:49 PM Subject: [amsat-bb] Re: HEO history question > Hi John, > > The UK and the mid-west were mutually visible > in the morning almost the entire month of > November, 1997, via AO-10. There was > a gap for a couple of weeks in December, > 1997, but mutual visibility returned for > the 2nd half of January 1998 into > Feburary 1998. > > RS12/13 made morning passes visible to > the mid-west roughly every other week > starting October, 1997 to March of > 1998. (didn't calculate passes beyond that) > > However, if you were tuning around in the FM > mode and found an SSB signal loud enough > to get your attention, I think you probably > heard RS12/13. > > Do you remember how long you heard the > signal? (a couple of minutes or a half an > hour or more). Was the signal strength > steady or was there a slow deep QSB? > > 73, Armando, N8IGJ > > >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> > > Date: Fri, 2 Dec 2011 13:58:52 -0600 > From: John Geiger <aa...@fidmail.com> > To: AMSAT-BB <amsat-bb@amsat.org> > Subject: [amsat-bb] HEO history question > Message-ID: > <CAFq43LZDtAvUcUDYzFtYxe4kG0XBQK_iaGNKkR6KE0tB=h1...@mail.gmail.com> > Content-Type: text/plain; charset=ISO-8859-1 > > 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 > > > _______________________________________________ > 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 _______________________________________________ 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
