Custom firmware for Vaisala RS41 and Graw DFM-17 radiosondes with support for amateur radio use. Ideal for tracking high-altitude balloons. Supported modes include APRS, Horus 4FSK mode, CATS, morse code (CW) and additional digital modes like WSPR and FT8 via Si5351.
The last modification to the file src/codecs/ax25.c is broken. Line 92 has a missing open parentheses (and a useless final semicolon):
header->destination_ssid = (uint8_t) destination_ssid >= 'A' ? destination_ssid - 7 : destination_ssid);;
and should be (probably) corrected to:
header->destination_ssid = (uint8_t)(destination_ssid >= 'A' ? destination_ssid - 7 : destination_ssid);