50 WAtt Amp, Hot and Low output
¿ªÔÆÌåÓý20M QCX_Mini driving the 20M 50 watt amp, 13.5 volts, 50 ohm antenna load?6 watts output and the mosfets get hot Set QCX keyer to practice mode and everything checks Ok, set BIAS, mosfets are cool. Removed all coils to check for shorts and winding procedure. Checked etches for shorts. REplaced the Mosfets ¡¡¡ no change. Possibly a shorted cap in the output stages. |
Bill P.