thanks Joe, Someone else sent me a note off list to the same effect. It makes it hard to track when using a narrow band receiver, such as a normal radio. I've got the hang of it now, once I realized that the frequency would vary depending on the temperature.
thanks Chris On Wed, Apr 2, 2014 at 5:12 PM, Joe Fitzgerald <[email protected]>wrote: > > > > 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 > > _______________________________________________ > Sent via [email protected]. Opinions expressed are those of the author. > Not an AMSAT-NA member? Join now to support the amateur satellite program! > Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb > -- Chris E. Thompson [email protected] [email protected] _______________________________________________ Sent via [email protected]. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
