[R-390] R-390 Voltage Regulator

[DAVEINBHAM at aol.com]

I know this is heresy, but considering the scarcity and price of 6082's, has 
anyone worked out a solid state regulator circuit for the R-390 ?  It doesnot 
look too difficult to do, but I see no reason to reinvent the wheel if it has 
already been done and is in the public domain.
The reason I ask is that I have just acquired a Collins R-390 from one of my 
former graduate students. This radio "died" twenty five years ago and has been 
living in his attic until he recently moved. Just what I need, another radio 
project.

Kindest regards,
Dave
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> I see what you mean about the 5651's being voltage reference tubes,  they
> can only accommodate  3.5 ma current variation compared to the ones that I'm
> more familiar with that take on all the current variation by themselves to
> regulate voltage. The manual has a pretty good explanation of this
> circuitry. I suppose considering the price of 6082's,  I should be more
> concerned with treating them with respect than finding a sub for the 26z5's.
> Best regards,  Dan  
>