When using WSPR with VAC I find the behavior of the PRE-AMP on the F1K5
confusing. If I add +10 dB in the pre-amp the VAC Out signal going to
WSPR increases also 10dB. This does not happen on the F5K were the S/N
ratio slightly changes (when I turn the preamp or off) but not the VAC
out level.
Is this correct operation on the F1K5? I always believed the pre-amp
should only effect the S/N ratio.
I would like someone knowledgeable on the subject to comment.
John, ve3dvv
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