Well, I'm getting closer after the meltdown. Q503, Q507 and all the BS170's replaced.? Power output 0.6 watts. Drawing 350 mA from 12 volt supply. Gate voltage on the BS170's seems okay - 2.6 volts key down.? PA voltage 9.6 volts, key down. Swapped BS170's. No change.
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Where do I measure/check next ?
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Thanks and 73,
Steve, N2IC
