Hidden SDR mode found in LoRa chip LR2021
Enthusiast Samson1te discovered hidden SDR functionality in the LR2021 LoRa chip: besides a 2.4 GHz radio, it covers 150–960 MHz and supports 16-bit receive and transmit. The main demo is P25 digital voice, and documentation is already available.
- LR2021 chip covers 150–960 MHz and 2.4 GHz radio bands
- Provides 16-bit SDR with both receive and transmit
- Main demo is P25 digital voice
- Discovery follows the hidden SDR found in ESP32
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Hardware