ayn-4b

AYN/4B

Portable QRP CW Transceiver

• Covers 40, 30, 20 and 17 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 D power amplifier
• Has a VCC indicator and a SWR meter
• PCB is designed to fit into Hammond 1590BB enclosure
• The project is 100% open-source

Links:

• Article (in Russian): https://eax.me/2023/2023-05-01-ayn-4b-transceiver.html
• Demo: https://www.youtube.com/watch?v=IM0qo4IA7QQ
• Fork by Kirill, R2AXZ with CMake support: https://github.com/r2axz/ayn-4b