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500 kHz Projects - Amplifiers

Click to enlargeA 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

Experiments with a QRO 500kHz Class E Power Amplifier by G4JNT
Having read plenty of discussion on the LF Reflector from people who have built used Class E switch mode amplifiers, I thought I’d see what could be done in the way of a low cost high power unit for 503kHz.
http://www.g4jnt.com/QRO_500kHz_PA_Breadboard.pdf
 

Creation date : 12/02/2010 @ 22:55
Last update : 07/05/2019 @ 09:20
Category : 500 kHz Projects
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