HBR/MK2

All HF bands QRP CW/SSB transceiver "HomeBrew Radio, Mark 2".

• Covers 80, 40, 30, 20, 17, 15, 12 and 10 meters
• Classical single IF superheterodyne design
• Effective IF derived AGC
• Voice compression
• Supports RIT and XIT
• 10-30 WPM Elekey-B type keyer + straight key mode
• Keyer supports record and playback, programmable with paddles
• Five favorite frequencies per band (press NEXT/PREV in FAST mode)
• Class AB amplifier provides 5-10W in both CW and SSB
• Has a S-meter and a SWR meter
• Open-source firmware, schematic and 3D-printable enclosure

Links:

• Article (in Russian): https://eax.me/hbr-mk2-transceiver/
• Post on Hackaday: https://hackaday.com/2024/05/13/github-hosts-ham-radio/
• Discussion on AmateurRadioBuilders: https://groups.io/g/AmateurRadioBuilders/topic/106073792
• Video blog on YouTube: https://www.youtube.com/playlist?list=PL6CWlCy5akj5v1Z4mPysYlqgNtCBYy-wM
• Demo: https://www.youtube.com/watch?v=D7rNUXjIyPM