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Diodes as DSB transmitter finals: A high level balanced modulator

Is it possible to be detected with a transmitter that has no final power amplifier transistor? To find out I made a high level balanced modulator using a string of 1N4148 diodes. Because digital modes are very efficient with low power I thought I'd try WSPR. With lots of audio and RF power going into this balanced modulator with any luck I'd get sufficient DSB for the signal to be detected somewhere. This is what I did on 7 MHz. You can see the results in the video below.

 

 

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