[VHFcontesting] GS35 432 power amp with power supply

Bill Olson callbill at hotmail.com
Tue Aug 20 15:31:45 EDT 2019


Hi all, I got this 432 KW amp from Bart, W9JJ. it's a beauty. The amp was built in 2007 by K6KWQ. It uses a Russian GS35 triode. It has probably had 4 owners. The 4th owner (me) hasn't used it at all as I have decided to go in a different direction.  It comes with a nice compact HV supply using a Peter Dahl transformer that supplies a little over 2KV depending on 220VAC line voltage. With that supply the rig shows around 9-10 db gain. As it sits it will do 900 watts with 100 watts drive and a stiff AC line.  With a different P.S. and more plate voltage the gain and power output will go up considerably. Many are getting well over the legal limit out of a GS35 on 432. Below is a link to a pic of the actual amp and supply that is still online: I can supply more pics if you want. I have the coax relays for bypassing the amp too. A Relcomm D type for the input and a Tohtsu CX800N for the output both 13.8v. . The Tohtsu is good for about a KW and was used with the amp with existing supply.

https://www.eham.net/classifieds/detail/430217

I'd like $600 for the amp and $650 with the relays, $500 for the RF deck without supply, but will consider reasonable offers. I will deliver or meet you in New England for gas and toll money or can ship. Power supply weighs 50 pounds and RF deck weighs 35 pounds. I'm guessing shipping cost would be 50-100 bucks depending on what you want.

Happy to answer any questions!  - bill, k1DY



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