My success with the Fish Soup 10 QRPp transceiver got me interested in further minimalization. About ten years ago I built a rig presented in SPRAT 108 as the ET-1 by Glen Yingling W2UW. It re-appeared in modified form as the FETer by G3XBM in SPRAT 137.
This rig uses just ONE active device, an MPF-102 FET that is switched via a 3 pole double throw switch from transmit to receive. The transistor is switched. The receiver is a regen and the transmitter is a very simple crystal controlled one stage oscillator. See:
https://soldersmoke.blogspot.com/search?q=ET-1 for info on my ET-1 effort.
The transmitter was the easy part. I don’t think I made any contacts with this thing. That has been kind of bugging me.
So I tried it again. Again, I had trouble with the receiver. So I looked around for another single FET regen receiver design. I found one on AA7EE’s page. It was designed by N0WVA:
https://aa7ee.wordpress.com/2015/02/07/n0wvas-one-fet-regen-optimized-for-ssbcw-sounds-great/
You are so going to love retirement Bill! – Tony G4WIF
Respect indeed! Tony’s right ^^
Barefoot (last picture}
Add an LC audio low pass filter and fine tuning? Might help Ed KC8SBV
Bill, I just finished an SSDRA low pass audio filter, just what your regen needs, but it uses 5 2N3904s, and not minimalist at all. I’m happy it works, and works well. Hope you get your one FET receiver usable. Ed KC8SBV
Bill, it’s great to see you get back to QRP CW, and give the computer chip rigs a break! And that it’s a regen is even better, given your past sentiments about regens, HI HI. I don’t see any mention of any chickens being sacrificed to Papa Legba, and it still works. True mojo! Keep ’em coming, thanks for all you and Pete do. N7REP Rob