Technical facts:
RF output power: 100 Watts
Frequencies: 5980, 5990 and 6170 kHz

48 meter transmitter without covers

48 meter Colpitts oscillators without covers. Own oscillator for every frequency. Voltage regulator for oscillators and temperature control circuits are in same board with oscillators.

Oscillator in package

Driver stages, 2C2166 and IRF531

Power amplifier with one IRFP150 Mos-Fet

Block diagram of the transmitter

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