Exciter for 136 kHz Band

There is an oscillator 1.37 MHz on the left side in the box. A digital scale (1kHz, 100Hz, 10Hz) is placed on the right, close to the front panel. There are two boards on the right side close the rear panel. The lower one is a driver with CMOS IOs and TC4426 (Dave, G3YXM's design), the upper board contains RX/TX logic. To have an exciter as a separate box has some advatages. It enables to improve both exciter and PA separately and also the exciter is not heated by PA. The output is symetrical 2 x 12 Volts in push-pull.

See the PA driven with this exciter.

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