[BC] Continental 314R-1 Trouble

[Steve]

Having some trouble with this transmitter, It will run for a short period of
time at low power, put it at high power and it trips off after all the
meters peg. I assumed

the switch tube was going bad and I changed it, same problem. Bias voltage
was a little low so I replaced some of the caps that have been drying out
and the voltage

is normal +115, -115 turn to low power good so far then high power and same
thing trips off, I have found out that if I would shut off the bias supply
for a second or two

and back on it will run for a while at low power, but not at high power.
Would there be something wrong with the switchmod card ? Also Continental is
telling me

that the clamp diode could be breaking down but I disagree since when I
remove bias voltage briefly it will work. Does anyone have any ideas?



 

 

Steve Fraunfelter

Chief Engineer

AVC Communications Inc

WCMJ-FM WWKC-FM WBNV-FM 

WILE-AM/FM WBIK-FM