[Boatanchors] A couple more questions

[Chris Howard]

Thanks for your help Vic.

> 
> The filaments must be lit and the filament transformer center tap path 
> to ground continuous in order for you to see grid current (I hope the 
> plate supply is off!).
> 

The plate supply is off.  The center tap of the PA filament transformer
makes its way through the grid current meter, back to the center tap of
the bias supply transformer.  But I don't think it goes to ground.  I'll
have to investigate that.  I'm beginning to suspect there is a
relationship between the two problems!

> 
> If you move the grid bandswitch the additional lead length may make the 
> amplifier more likely to oscillate at VHF.  Certainly it will affect the 
> neutralization at the operating frequency.  I wouldn't do this unless 
> absolutely necessary.

I hadn't thought of that.  I'm glad I asked.

Chris
w0ep