Hi All,
I have just finished this amp, built to a YU1AW design.
It used to oscillate at 480 megs, this has now been cured, however, it
no longer produces anywhere near the power it used to - Previously I
could achieve 800 watts for about 40 watts of drive.
Now I struggle to get 150 Watts before the grid current shoots through
the roof - anode current never rises above 300 ma at 2.2kv.
I have tried a different pair of tubes, and still get the same results.
Any ideas??
Sean
M1ECY
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