I had been having some issues with SATPC32 and my iCOM IC-9700. Whenever I was running SATPC32 and RS-44 was active, for some reason if I used the rig’s VFO knob to tune around the passband, it would sometimes caused the Doppler adjustments to stop working. All the other satellites were just fine.
I went back to the recommended settings from the SATPC32 documentation and discovered I was twice their recommended baud rate. So I lowered things to 57600 baud. On my first test, that seemed to fix the problem with RS-44.
However, I also use that radio with WinLink and VARA FM. I knew that I was using CAT for PTT, so I needed to drop the baud rate down on that as well. Imagine my surprise at finding that 57600 baud didn’t exist as a valid value.
The fix was simple; change from PTT CAT control to COM control. I used the same COM port as I had used for CAT control (COM4 in my case), and selected the PTT pin as RTS. That worked just fine.
