Mark, PSK31 is a combination of amplitude and phase modulation.
My pegasus shows the amplitude modulation on the power indicator.
That is normal. If there is little power variation then you are
driving the pegasus too hard and the output will splatter.
The amplitude modulation in PSK31 is very low frequency. It is
less than 31 Hz. My wattmeter on my tuner shows some of the
variations in amplitude.
Jim FitzSimons W7ANF
Carl Moreschi wrote:
>
> Mark,
>
> My software reports power as sent to it from the Pegasus firmware.
> I believe the power reading is just fluctuating at the audio frequency
> driving rate.
> It is just getting snapshots of the power based on random instantaneous
> power level samples by the firmware in response to power requests
> from my software. This would account for the varying readings. Your
> wattmeter cannot respond fast enough to show variations at the microsecond
> level.
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