loss of sensitivity K3

[Mike Baird]

My K3 s/n 5947, intermittently loses sensitivity on all bands after being on
for a few minutes.  Usually tapping on the top of the rig restores things.
Also putting rig in xmit restores rx to normal.  Doesn't last though.  I've
eliminated the so 239 connector and coax as culprits.  Not using the
internal tuner.

 

Any ideas??

 

--Mike, W0RSR

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