|[AMRadio] ceramic tube tester|
alsan19420 at hotmail.com
Thu Oct 9 21:51:18 EDT 2008
Very pleasant and organized setup. the view looks spectacular. My family since before the Great Fire is from The bay and Santa Cruz. Where is your QTH?
> Date: Thu, 9 Oct 2008 16:30:26 -0700> To: amradio at mailman.qth.net> From: hl at sfsu.edu> Subject: [AMRadio] ceramic tube tester> > > I finally got my 1966 TMC linear amplifier operating, but with a > modulated AM (MCW) input, my Wattmeter indicates an anemic 25 Watts > into a dummy load with a total PA plate current of 200mA (nominal > current reading according to the manual) for the two parallel > 4CX250b's. The manual claims 200 Watts CW! Perhaps one or both tubes > are weak. Perhaps a resistor or capacitor has changed value. I just > don't know yet and may have to put it on the bench again.> > If anyone knows of specific tube testers that will test ceramic > transmitter tubes, such as the 4CX250b or the 4CX350a, please share > them with this list. Many amplifiers and transmitters use these > tubes.> > 73 Hal KK6HY> > P.S. I am still interested in TMC transmitter and amplifier original > prices to share with the group. So far, no one has responded. TMC > certainly seems to have kept their prices well hidden.> ______________________________________________________________> Our Main Website: http://www.amfone.net> AMRadio mailing list> Searchable Archives: http://email@example.com/> List Rules (must read!): http://w5ami.net/amradiofaq.html> List Home: http://mailman.qth.net/mailman/listinfo/amradio> Help: http://mailman.qth.net/mmfaq.html> Post: mailto:AMRadio at mailman.qth.net> To unsubscribe, send an email to amradio-request at mailman.qth.net with> the word unsubscribe in the message body.
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