The two push pull amplifier and combiner was biased to operate in a nominal class AB mode with a standing drain current of 150 mA per transistor and a current swing up to 5 amp per transistor at full power. The power supply used was nominally 36 volts.
Each transistor gate is loaded down with a 470 resistor selected to mask the input capacitive reactance within the MF range. At amateur band frequencies, Rf Amplifier input impedance is essentially the input capacitive reactance of the MOSFET transistors and lower values of load resistance could have been considered. R 10 ohm is parasitic suppressors which should be mounted directly on the transistor gate pins. These were included as a precaution rather than because of any problem experienced.
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