My regenerative receiver was annoying me, and I wanted to do some soldering tonight anyway, so I thought I’d tack together a really simple transmitter project. I wound a coil, and spent about 45 minutes tacking a simple QRSS transmitter (really just a Colpitts oscillator) which should dump about 14mw of power into a 50 ohm load. I also created an LTSpice model for it, which I should put up in the next few days.

YouTube – QRSS beacon, ala Hans Summers, G0UPL.

More writeup later.

Addendum: Before crashing last night, I moved it out to my dining room table where my FT-817 was sitting, and verified that it does indeed seem to emit radio waves.