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Author Topic: High Stability Tube VFO  (Read 2523 times)
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WA4WAX
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« on: September 25, 2015, 07:06:51 PM »
A 12AT7 and a 12AU7!  Just the thing for that AM transmitter.  Someone please check his drift claims.  Looks like a nice unit.

One might use an aluminum box lined with stryofoam insulation.

http://americanradiohistory.com/Archive-Electronics-World/60s/1961/Electronics-World-1961-07.pdf


Matt
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KO6YB
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« Reply #1 on: September 25, 2015, 10:18:39 PM »
Hello WA4WAX, looks a lot like the Vackar tube VFO. Worth reading if you are building this VFO.

http://www.w7ekb.com/glowbugs/VFOs/vackar_vfo.html

Stan
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WA4WAX
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« Reply #2 on: October 01, 2015, 10:54:56 AM »
Thanks Stan!

I am familiar with that 12AT7 circuit, and was planning to post it.

I have quite hoard of old articles, and post from time to time.

Matt
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