The SX1255 PMOD board is now available through PCBWay.
The device is a minimalistic PMOD RF shield featuring the Semtech SX1255 IQ transceiver. The device supports virtually any amateur radio mode, including TETRA, and covers 400-510MHz range. The baseband interface is I2S compatible (full duplex).
GitHub: https://github.com/M17-Project/SX1255

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