COLIN LAMB wrote:

More sensitive tubes can get away with using a 50 ohm resistor and no tuning
on the input. That would probably not result in sufficient drive (I have
not worked with the numbers). However, you could use something like a 300
ohm resistor to load the grid then use a 4:1 step up broadband transformer.
One less control.

My thoughts exactly but what is a 4:1 broadband transformer, other than
the obvious?

I was talking to someone today about not tuning the input and he said it
can't be done.

js

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