Emory: before you go to all the hassle of checking the LPF's I would definitely try a simple factory reset as Evan suggested above.
Have you tried that?
The reason I ask is that yesterday I experienced very, very low RF out on 12 and 10m only. My QMX had been working just fine previously so I was scratching my head.
Only two things had I done in the meantime between working and non-working and that was:
1) playing around testing key clicks by turning AGC on and off and
2) I mistakenly tried to tune my IC7300 (10W out) nearby my QMX while the antenna switch was set to the QMX. This would mean some SWR and RF at the antenna switch itself (not into the QMX directly). I think that perhaps the RF caused some glitch in my QMX, but I cannot be certain.
At any rate, a simple factory reset cured my problem. No idea why! So try this first...
Larry VE7EA
