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LoRa ESP32 KISS Bluetooth modem (for APRSDroid or aprs.fi iOS) + APRS-IS RX/TX iGate over WiFi + Digipeater + DV (with Codec2 Walkie-Talkie)

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uw5elk/esp32_loraprs

 
 

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ESP32 LoRa APRS Modem

Modes of operation

This project is amateur radio ESP32 based LoRa KISS Bluetooth/BLE/USB/TCPIP modem + LoRa APRS-IS RX/TX iGate server over WiFI + LoRa APRS digipeater + Codec2 DV modem (with Codec2 Talkie Android application).

To configure sketch modify default parameters in config.h file.

⚠ Project also supports APRSDroid TNC2 text APRS packet mode (configurable), which makes it interoperable with other LoRa APRS trackers without AX25 support.

Supported module types: SX126X, SX127X and other modules supported by RadioLib.

Modules, which are used by users and known to work

  • SX126X (suggested, 1W modules will provide decent coverage for APRS, stable frequency suitable for < 125 kHz BW at 433 MHz, 5V from USB power bank is enough to power it, has additional LNA)
  • SX127X (low power, 50-100mW, temperature frequency drift, problematic for narrow band)
    • RA-01 (SX1278)
    • RA-02 (SX1276)
    • TTGO T-Beam (SX1276)

Dependencies

Install via board manager:

Install via libraries:

Development board

Development board schematics, case and antenna models are available under cad and schematics.

Modes of operation

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LoRa ESP32 KISS Bluetooth modem (for APRSDroid or aprs.fi iOS) + APRS-IS RX/TX iGate over WiFi + Digipeater + DV (with Codec2 Walkie-Talkie)

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