Stan,
That is quite unusual to have the S-meter at an S-3 level with no antenna on
only one band - that would be an indicator of some internal signal being
picked up inside the receiver. That is not typical, so you do have
something abnormal there.
One potential source is 2nd harmonic radiation
Don W3FPR, I wanted to relate something I am seeing with the K2
S-meter when tuned to the 30m band. I have two bars showing continuously,
whether I have the preamp off or the attenuator on or the antenna completely
disconnected. Just shows those first two bars all the time. It does not do
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