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Old February 21st 07, 12:27 PM posted to rec.radio.amateur.homebrew
Jack Schmidling Jack Schmidling is offline
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First recorded activity by RadioBanter: Sep 2006
Posts: 94
Default 813's as Modulators

My new (first one in 50 years) is an 8000 modulated by a pair of 813's
running as triodes. The RF deck and Pw supply are up and running and I
am working on the modulator now.

My plans are to drive it with the Ranger and eventually do a stand alone
audio section. The Range gets poor audio reports in spite of months of
trying to resolve it.

I am wondering if anyone here as any experience using 813's as triodes
and would also like some help on the audio driver.



I bought a little solid state audio pre-amp and driver that puts out
about 4W at 8 ohms. This is probably not enough to drive the 813's so I
need more poop and some ideas on how to drive the modulators with the 8
ohm amp.

There are some in progress pics of this project at
http://schmidling.com/radio.htm


Jack K9ACT


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