Retevis C62 Handheld Decodes TETRA Voice via OpenRTX Firmware

Wojciech Kaczmarski (SP5WWP) demonstrated that the budget Retevis C62 handheld radio can decode digital TETRA voice using custom OpenRTX firmware. Sharing the BK4819 RF chip with the Quansheng UV-K5, the project highlights new digital reception possibilities on low-cost hardware.