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Originally Posted by Neil Purling
Here's the amplifier stage.
The 1 Meg triode grid resistor: I have a 1 Meg pot to serve as a volume control. Would you reccomend any extra resistances. I was going to connect the top of the pot to pin 2, with the wiper to thejunction of the 220P & 150R cathode resistors.
Any other changes anyone would like to suggest, in the interests of stability?
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Something does not look right here.
I would have expected the 1M resistor to return to ground on the grid of the triode, and the 330k resistor on the grid of the pentode to be lower in value - about 47k.....
Well, thats what I can see anyway, I have an ECL80 in a direct conversion RX here somewhere, I will have a look later on and try to see how that is set up....
Cheers
Sean