A 500 Watt Output 4-400A Linear Amplifier for 600 Meters by W5JGV With 3200 Volts on the anode, the amplifier draws 268 MA key down, CW mode. Screen voltage is 600, and the anode idle current is 80 MA. Idle dissipation is 256 watts. DC Input power is 915 watts, and the RF output power to the dummy load is 540 watts, for a calculated efficiency of 59% with good linearity. http://w5jgv.com/4-400A_600M_amplifier/index.htm
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