Photo: Modified Russian home brew FULL CW QSK UW3DI-III HF Transceiver. Photo by UA3H
The legendary and very famous HF transceiver was designed in the Soviet Union by Radio Amateur – Yuri Kudryavtsev (UW3DI) in 1968. The transceiver has been build on radio tubes. Latter his second version released on semiconductors (UW3DI-II). Since then the transceiver has been repeatedly replicated and improved / modified in the parameters by many radio amateurs. A third and even fourth (FULL CW QSK) version, has been converted in late 1980’s. The transceiver has been relatively simple to use, and served as its widespread popularity among amateurs of the Soviet Union and beyond. The radio amateurs called this gear just simply – “DeI” (short from UW3DI).
The Uncertain Future of Ham Radio Software-defined radio and cheap hardware are shaking up a hobby long associated with engineering
By Julianne Pepitone
Will the amateur airwaves fall silent? Since the dawn of radio, amateur...
The SDR.hu project has been finished
“I’d like to say a big thanks to everyone who joined my journey with this project!
I hope you had a good time listening on the site, and learnt some things about SDR. The purpose of this site...