Mini17 - QRP M17 handheld. Work in progress! Stay tuned.
The first handheld to suport M17 was our own TR-9. Unfortunately, the design has a minor flaw in the RF part and is very hard to assemble. After that, we tried modifying various radios with different outcomes. This is our new device - the Mini17. It's built around the CC1200 RF chip, which does great job at receiving and transmitting M17 signals. The power output is limited to 16dBm (40mW), so it's a QRP radio. The idea is to build a small radio first and then add RF power amplifier stage later. A Proof of Concept, if you will. The design could even be extended to a mobile rig in the future.
The RF chip used is CC1200, MCU is STM32F405RGT6. OLED display is the same as in Module17.
OpenRTX - the Linux of amateur radio!
/Hardware/KiCAD contains two complete KiCAD projects, one for the mainboard and the other for the HMI
/MCU/Mini17.ioc contains the pinout plan for an STM32F405RGT6 MCU (to be used with CubeIDE >=1.10.1)