WSPR using PSDR-IQ power fluctuation - normal?

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Joined: 2010/02/02 - 23:37
WSPR using PSDR-IQ power fluctuation - normal?

I'm new to tx on WSPR, I am using a Softrock 6.3 with PSDR-IQ.
Simple question - is it normal to see the power output fluctuate along with the data changes? I can set the power output to my SWR Wattmeter to 5 watts on with the tune function of WSPR (with an amp) but during the data transmission the meter will vary from 2 watts to 8 watts, averaging 5.... I just started using PSDR last week so it is entirely possible that something is not checked that should be in the software or something.
Is this normal?