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Schematic diagram for a broadband QRP SWR metering circuit and SSB TRANSCEIVER 80M / 40M boster filter IF Radio

A schematic diagram for a broadband QRP SWR metering circuit for use in a QRP antenna tuner. One could simply hold a momentary DPDT switch down and watch the LED while tuning the capacitors of the antenna tuner for minimum or zero light.

Make Electronics Schematic Diagram 3 lines mixer

Make Electronics Schematic Diagram 3 lines mixer you can modify this circuit become more than 3 lines mixer. Just add and repeat the input parts (P=10K R=22K).

Make electronic circuit 7MHz SSB Transceiver to communicate

Make electronic circuit 7MHz SSB Transceiver to Radio Make electronic circuit 7MHz SSB Transceiver to Radio communicate

Electronic circuit diagram audio amplifier AN7148 1w

Electronic circuit diagram audio amplifier AN7148 1w

Tube Audio Amplifier Circuit

Tube Audio Amplifier Circuit using EL34, 6SN7, 12AX7

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