On Tuesday, October 11, 2022, 4:03 PM, Mike Swiatkowski <mjswiatk@gmail.com> wrote:
5 kHz is just as good! Maybe better. Let's go with that!Mike, AA9VIOn Tue, Oct 11, 2022 at 3:01 PM Mark Johns, K0JM <k0jm.mark@gmail.com> wrote:Almost everyone in North America is operating at 5 kHz up from the bottom of the downlink passband. I set my WSJT-x at 435.6115. Once in a while I see somebody CQing beyond the passband, more than 3 kHz up from that frequency, but I don't know if they actually work anybody.--Mark D. Johns, KØJM
AMSAT Ambassador & News Service Editor
Brooklyn Park, MN USA EN35hd-----------------------------------------------"Heaven goes by favor; if it went by merit,you would stay out and your dog would go in."---Mark TwainOn Tue, Oct 11, 2022 at 2:53 PM Mike Swiatkowski <mjswiatk@gmail.com> wrote:I read a message from Jerry, N5EKO, that the gentleman's agreement is to operate 3-10 kHz above the bottom band edge. WSJT-X may show you about 2.5 to 3 kHz of passband on a typical computer screen. So, that 7 kHz seems a bit much to monitor all at once. I think it'd be easier to just pick a standard calling offset from the bottom band edge to monitor when the satellite is passing. If we all started listening to +3 kHz to +5.5 kHz USB FT4 mode from the band edge it's a simple rule of thumb and we know where to listen to those signals seemingly under the noise floor. Many users don't have a band scope. So, a designated offset would be helpful.Example: RS-44 Satellite downlink passband is 435.61 - 435.67 MHzListen or CQ by setting SATPC32 satellite (not rig since it changes due to doppler) frequency to 435.613 USB mode and choosing FT4 on WSJT-Xso, the satellite (not rig) downlink frequency forFO-29 = 435.803AO-07 = 145.928HO-113 = 435.168and so forth for other satellites. Maybe the XWs, CAs, JO-97, and EO-88 birds would be good for FT4, too.Mike, AA9VIEN52
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