[1000mp] Question about several things involving the receiver section involving AM synchronous reception

[J Bowen]

Okay, so I have been playing with the synchronous am reception and noticed
a squeal that sweeps up in frequency when the RF gain is reduced to keep
the static down. I don't notice it in regular AM reception, only in
synchronous reception. If I turn the RF gain up the squeal usually stops.
I've also noticed that the audio seems weaker in SSB than on AM reception
even using the 6khz filter. Why is that? One last question involving RF
gain control. Sometimes when I turn it all the way down the main busy light
goes completely off along with a complete s-meter drop to zero. What is
that? Should I pose these as separate questions? Thanks y'all. 73

Jason Bowen, KB5VXX