[R-390] R-392 help

[Tom Norris]

I've done so for ages. I've kept the filaments down at 24 volts so  
they'll last longer, then put 30 volts on the plates. Works well for  
me. I'd not go over 32 volts since there are 35 volt caps in there.

Tom NU4G

> John Bunting wrote,
>
> By the way, has anyone else noticed how Collins slips these little
> things into their designs.  Like the separate B+ pin on the Power
> connector of the R-392?  One would 'almost' think that somebody was
> thinking about making the R-392 capable of running AC for the  
> filaments
> and separate DC B+ for fixed operation.  Has anybody tried that?