Saturday, July 20, 2019

Regenerative receivers I have built

Regenerative receivers infuriate some but fascinate me. Badly built ones can squeal and drift but a well built set, picking up signals from around the world with just one or two transistors, is a thing of beauty. 

If you are not familiar with a regenerative receiver they use positive feedback (regeneration) that increases a circuit's gain. This also increases its selectivity to allow it to better pick signals out. And when the detector is lightly oscillating it produces a beat signal useful for receiving CW and SSB signals. 

Here are some regens I have tried. 

Listening with an HF regenerative receiver

An older HF regenerative receiver (but still solid state)

One valve regen receiver runs off 12 volts

PS: Enjoy reading? Consider this selection of amateur radio books I have written. They are available in ebook or paperback. 

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