2 Apr
2014
2 Apr
'14
4:12 p.m.
I notice that the frequency calculated by MacDoppler is slightly off from the frequency that I hear the telemetry at.
AO-73's transmit frequency drifts around as the spacecraft warms and cools. I remember being surprised to see the telemetry trace increase in frequency on my waterfall display when my receiver was at a fixed frequency. I initially thought something was wrong with the local oscillator in the radio, but my signal generator showed a nice straight vertical line.
There is likely nothing wrong with your setup.
-Joe KM1P