Tom I am attaching a schematic diagram mailing direct to you, of a typical circuit hope it helps.
This circuit is the same as a push-pull version but with one tube and one neutralizing capacity taken out for single-ended operation. See Push Pull Triodes in Class C at http://www.qsl.net/wa5bxo/pptriodes/pptriodes.htm for more info about Class C Triode operation. Good Luck John -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Tom Elmore Sent: Sunday, June 03, 2007 1:42 PM To: Discussion of AM Radio in the Amateur Service Subject: RE: [AMRadio] HB Transmitter Schematic John, it is connected on a large ceramic jack bar directly to the tube plate. I was looking for a schematic to reference so I could determine the values. The unit in question appears in ER#57 page #16 at the top. Thank You Thomas Elmore Anchorage, Alaska -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of John E. Coleman (ARS WA5BXO) Sent: Sunday, June 03, 2007 10:09 AM To: 'Discussion of AM Radio in the Amateur Service' Subject: RE: [AMRadio] HB Transmitter Schematic Tom Does this rig use a plug in coil assembly on a large ceramic jack bar? And is the coil connected to the plate of the tube or is it connected through a coupling capacitor to the plate. There or only a few ways to wire an output link coupled rig with a single tube (not Push pull). Are you looking for a wiring diagram or parts descriptions and values? John, WA5BXO -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Tom Elmore Sent: Sunday, June 03, 2007 5:22 AM To: [email protected] Subject: [AMRadio] HB Transmitter Schematic Hello, I recently inherited a HB transmitter from my good friend Bob KL7HDY who became a SK two months ago. Bob built this transmitter back in the late 1950's in a 6 foot rack enclosure. I am trying to determine if he built this based upon any popular designs of the day since I do not have a schematic for it. This is what I know so far: The final amplifier tube is a single 304TH It uses link output and is currently set for 15 meters. These output coils are quite beefy by the way as I believe they were rated for a full KW input. The modulator uses a pair of 810's. Bob, had it set up to be driven from a Heathkit TX-1 as the exciter. Thank You Tom Elmore KA1NVZ Anchorage, Alaska ______________________________________________________________ AMRadio mailing list List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:[email protected] To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body. ______________________________________________________________ AMRadio mailing list List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:[email protected] To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body. ______________________________________________________________ AMRadio mailing list List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:[email protected] To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body.
