I will say that the fact that the actuality of the 5KHz lower than published frequency (Known for years) is the reason that often times you here a newby on the bird, throwing out his call, getting responded to but never answering back. I had a good QSO on HF a bit back, mentioned "I do AMSAT" and he said something to the effect, "I tried listening and calling but never heard anything". I told him about the "Actual vs. published" frequencies. He says "Well that probably explains it then". Even K6LCS's great pages at http://www.work-sat.com/Sat_Skeds.html do not refer to the offset. I am convinced that this disparity is the cause for at least some of the QRM on that bird, not all but some.
Tom Schuessler N5HYP n5hyp@arrl.net
Message: 2 Date: Sat, 7 Jun 2014 16:47:19 +0200 From: Ib Christoffersen oz1my@privat.dk To: Koos van den Hout koos@kzdoos.xs4all.nl Cc: amsat-bb@amsat.org Subject: Re: [amsat-bb] SO-50 Frequency Drift Message-ID: 70.98.04540.7F523935@fep45 Content-Type: text/plain; charset="iso-8859-1"
Hi Koss and Paul, I do not think that the "normal" center frequency is 436.795 MHz.
I use two frequencies for the downlink in SatPC32:
436.791 and 436.788 MHz.
I have heard it suddenly jump about 5 kHz during a pass - but that is some time ago.
The two frequencies above are not always spot on but close enough.
Have a nice weekend all.
OZ1MY/Ib