Sorry Jerry, It was John Bakko
"The board as received should measure ~35 ma. without the PA connected. Preferably, use a separate
power supply for the PA, but the main PS can be used if it is stiff and heavy enough. Then set RV1 to 1-2v.
Connect the PA. Slowly increase RV1 until the total draw for the board and PA is ~135 ma. There should be
~4v on the gate of the IRF510. This may vary quite a bit, but 5v is probably too much."
My mistake on the quote, but if I'm not mistaken, RV1 should be adjusted 100 ma above idle(~250) and then 136 pushes it up to about 1.5 amp when speaking.
Andy
