[Boatanchors] Collins 30L-1: Using 572Bs

[David Propper]

Hi Dave,

I've been running 572B's in my 30L-1 for at least 10 years, never even thought to change the resistors out.  Been working fine all the time , avg 700 watts output into the BIRD DL.

73,
Dave, K2DP


On Jan 31, 2014, at 9:02 AM, David Stinson <arc5 at ix.netcom.com> wrote:

> In my 30L-1, there's a 39-ohm resistor designed to provide a small negative grid bias to the 811s on key-down.
> I've installed 572Bs, which call for zero bias.
> Should I jumper-out this resistor when using 572s?
> 
> 73 Dave S.
> 
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