[BC] Re: Continental 314r-1

[Steve]

Yes this is a PWM and I have no way of checking but I think there is some
output there
but I am not sure if it is driving the PA to full power.
 
Steve
 
-----Original Message-----
 
 
Steve,
 
My memory is a bit fuzzy but isn't this a PDM/PWM modulated rig?
 
I ask because if is...the symptoms sound like something in the PDM tube or
associated circuits is causing the PDM tube not to conduct. 
 
 
 
Dr. Dave

 

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Steve
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Subject: [BC] Continental 314r-1
 
 
 
 
I am in the process of retuning this box and I am having trouble getting the
power out of it. I can get normal high voltage reading, but no 
plate voltage, however the plate voltage meter seems to be pulsing at about
a second . Now if I turn down the power control (lower)
then at some point I can get 5-700 volts of plate voltage, but as I turn up
the power it trips off. When it is at 700 volts I get current of about 150
ma (.15)
of plate current and maybe half and amp of final output current. Then if I
turn up the power control with it off and put it in High or Low power it
pulses? Continental has been trying to help, but I wanted to see if somebody
in the field has experienced any of this or has any insight.
 
Thanks,
Steve Fraunfelter
Chief Engineer
AVC Communications Inc
WCMJ-FM WWKC-FM WBNV-FM 
WILE-AM/FM WBIK-FM