Roger G3XBM's (Mainly) Amateur Radio Blog

Back in the 1960s these were all the rage.  I remember making a simple tunnel diode oscillator at university in about 1969. I am not sure if...

This looks like a design by Michael Rainey AA1TJ, but this one was on a German blog site of Peter DL3PB. I was very annoyed by the Facebook...

DL3PB's "all diode" transceiver Today I got this most interesting email from Peter DL3PB . Peter must be congratulated on...

Mike Rainey AA1TJ has some good tunnel diode ideas on his pages but these devices are hard to find these days. Instead one can create a neg...

Way back in the 1960s I recall making a simple tunnel diode oscillator as part of a lab project and being excited to see such a circuit use...