Thanks very much for this, John.
For the record and/or posterity, I was unable to get a full 1A from HF Sigs' board #869.
I turned both R136 and RV1 fully clockwise, then opened RV1 until the Fluke 87 showed 100mA. ?(Amp input; meter on the A/mA setting)
R136 had to rotate almost fully CCW to get a solid 7W output power on the WM-2 Wattmeter. ?The PA was only drawing about 740mA at that point.
The IRF510's heatsink was warm to the touch, and the resting current draw was up to about 150mA. ?I turned RV1 a bit CW so the 'warm' current was 100 mA. ?Current with a strong 'ahhh' and a solid 7W out still shows about 740mA draw by the PA.
I'll have a CARE package from Mouser tomorrow - I'll get the signal on the o-scope on the dummy load and check the output signal then. ?In the mean time, I have a solid, intelligible signal on the SDR receiver now - thanks for that!
