From: Garey Barrell 
Subject: Re: [drakelist] R-4B question


Gerry -

That +10V is also fed through small decoupling resistors to 
the Band oscillator and the Calibrator oscillator.

73, Garey - K4OAH
Atlanta

Gerry wrote:

> I seem to remember there were 2 versions of the R-4B or is it the R-4A
> I'm thinking about?. The R-4B (sn#9182G) I have is a 10 tube job and
> doesn't have the voltage regulator tube. The only voltage regulation in
> the receiver is at the PTO. Unregulated 150 volts is fed through a 6k/5w
> resistor to a 1N714 zener in the PTO enclosure.
>  

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