A friend of mine W4AJT is having problems with his L4B. I
thought it sounded like a capacitor might be breaking down with high
voltage but perhaps some of you may know this amp and have some other
suggestions. Please reply directly to W4AJT@juno.com.
73, Bill W4ZV
"About the L4B, -- when I turn the L4B on, and leave it in the tune/CW
position, I can transmit for as long as I want to-- like all day long.
But when I turn the red button on, in the SSB position, I can transmit
for only a few seconds. I replaced the 82 ohm current limiting resistor
with a fuse.(in the b+ lead). I cannot find any leakage in any of the
bypasses in the plate circuit or anywhere else. I have used two and
five-amp fuses in the B+ lead, and it still blows the fuse. I do not see
any arc-over when this happens, except in the fuse when it blows. If
anyone has any ideas about what causes this, I would appreciate hearing
from them."
73, Weldon W4AJT (reply to W4AJT@juno.com)
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