I also can confirm that SO-50's actual downlink is lower than published, by about -5 to -10kHz.
Dave KB5WIA
On Sun, Jun 8, 2014 at 6:19 PM, Tom Schuessler tjschuessler@verizon.net wrote:
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