Thank you for the advice so far. Unfortunately, the problem is deeper than just filter adjustment. I tried tweaking the filters back and forth quite a bit on 30M without getting any stir out of the external wattmeter.

I am now on page 6 of the K1 manual. Under "Transmitter Signal Tracing", the following voltages were seen with the scope. Note that most of them seem to be DC, not waveforms.

PRE   0V
ATTN   0.1V
OSC   5V
MIX   0.5V
BUF 8V
TR1   7V
BPF ~3 or 4V
TR2   2V
TR3   0.7V
DRV   0.1V
PA   < 0.1V
ANT   < 0.1V
RFD   0.15V

My scope may not be well-calibrated, so don't read excessive precision into these numbers. But they are WAY off the manual guidelines.

Cathy
N5WVR


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