[Boatanchors] BC-375 Tube Sub Project: 7984 Curiosity

[Bry Carling]

Ouch, you're using those monster power valves as an oscillator ? Ick. I bet they would behave much better if you let them have a 6AG7 come over to play oscillator and them let em be RF amplifiers like they wuz designed to be...

Bry Carling
http://af4k.com

> On Nov 9, 2013, at 2:47 PM, "David Stinson" <arc5 at ix.netcom.com> wrote:
> 
> Got half a dozen used 7984 tubes in to try as a sub for 211.
> Results encouraging so far, but a long ways from being ready to report anything.
> 
> One curiosity: What would make the triode-connected 7984 as MO oscillate strongly on 10 MC but be slow to start,
> causing bad chirp on 7 MC? One would think it would
> go "the other way-round." It's not the 7 MC tuning unit because the original 211s behave with this one.
> Any ideas? 73 Dave S.
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