CW QRPP Transmitter 7 MHz

The crystal oscillator uses six selected RF chokes. Their combination alows a relatively wide frequency, in which two degrees amounts to 30 kHz. The oscillator in the low sub-band provides a lower output of power. The oscillator and antenna-relay are switched on and off by the NPN-transistor. The PA-transistor has the near equivalent of 2N3553.

Components are built on a piece of perf board.

Little tin box, inner dimensions 90x67x22 mm.