All HF bands QRP CW transceiver. This is an improved version of HBR/3B.
- Covers 80, 40, 30, 20, 17, 15, 12 and 10 meters
- Classical single IF superheterodyne design
- Has just a few barely hearable (~S0) spurious signals
- Simple but effective AGC
- Supports RIT and XIT
- 10-30 WPM Elekey-B type keyer + straight key mode
- Keyer supports record and playback, programmable with paddles
- ~5W class C power amplifier
- Has a S-meter and a SWR meter
- Open-source firmware, schematic and 3D-printable enclosure
Links:
- Article (in Russian): https://eax.me/hbr-8b-transceiver/
- Demo: https://www.youtube.com/watch?v=GlcS9r8nLz4