Many thanks to Pete (WB9FLW) who writes:
Adam Rong BD6CR has designed a simple DSB Transceiver for FT8. Crystals are available for 7.074 MHz. and 14.070 MHz (which can be “pulled” with a trimmer to 14.074 MHz).
Using only 4 Transistors, 2 IC’s, 3 Toroids, 5 Diodes/LED’s and a handful of resistors and capacitors this one watt wonder will get you on the air in no time.
One could build this on Perfboard (see above), or use Ugly/Manhattan style construction. There are no plans for a circuit board.
Adam posted this on groups.io crkit:
“I built this 7074 DSB 1-watt radio and made 6 FT8 QSO with JA stations in 15 mins last weekend. It is fun to operate by switching PTT manually to keep it simple and lower current consumption.”
Wow! Thank you for sharing this Pete. I’ll have to give this a go myself!