Turn your Android phone into real Amateur Radio HF/VHF/UHF APRS enabled Codec2 DV (digital voice) and/or FreeDV handheld transceiver.
Requires additional hardware (e.g. AFSK/LoRa), software (e.g. Direwolf) radio modem or analog transceiver with USB audio + VOX/USB CAT PTT control, such as MCHF or ICOM
For more information visit project Wiki
What you can do with this app:
- Voice communication:
- Send and receive voice over FreeDV modes
- Send and receive Codec2 voice over KISS
- Send and receive Codec2 voice encapsulated into APRS UI frames
- Data communication
- Use APRS over FSK 300 (HF, TX only), AFSK1200 (VHF), FreeDV OFDM (HF) or APRS-IS (Internet)
- Send and receive APRS position reports
- Send and receive APRS messages
- APRS log with raw APRS data
- APRS station hub with stations grouped by callsign and their log
- APRS map with ability to see station info, station track with information about each geo position
- Use application as APRS digirepeater
- Use application as APRS-IS RX/TX iGate to forward packets to/from APRS-IS (Internet)
- Use application as APRS-IS internet tracker to send/receive APRS data over Internet
- Integrate with hardware/software
- Use it with your KISS Bluetooth/BLE/USB/TCPIP hardware modem, such as LoRa/FSK/AFSK/etc, control its parameters by using "set hardware" KISS command
- Use it with KISS software modem using TCPIP, such as Direwolf
- Use it with your HF/VHF/UHF transceiver as a sound modem
- Use your phone as a software sound modem by using external USB OTG audio adapter (voice + data) or built-in phone speaker and mic (only data)
- Use your phone for FreeDV protocol voice communication together with HF transceiver, which supports USB OTG audio
- Control your external transceiver PTT by using USB serial CAT (or VOX if CAT PTT is not supported)
- Android 7.0 (API 24) or higher
- Application could also be used with your Android network radio, such as Inrico TM-7, apk just needs to be installed over USB, see Discussion
- Android 5.0, 5.1, 6.0 (API 21, 22, 23)
- Separate apk package is released with "legacy" suffix from legacy branch
- Modem, radio module or transceiver which supports KISS protocol or can process KISS or raw Codec2 audio frames over serial Bluetooth, BLE, USB or TCP/IP
- Analog transceiver with built-in or external USB audio adapter and VOX or USB CAT PTT control (such as MCHF or iCom IC-7x00 series)
- Source code is integrated into this project for easier building and customization:
- Codec2 codec: https://github.com/drowe67/codec2
- Android Codec2 wrapper code: https://github.com/UstadMobile/Codec2-Android
- Fetched with gradle as dependency:
- Android USB serial: https://github.com/mik3y/usb-serial-for-android
- Hardware
- ESP32 LoRa APRS modem (used with this application for testing): https://github.com/sh123/esp32_loraprs
- Minimal Arduino LoRa KISS modem: https://github.com/sh123/lora_arduino_kiss_modem
- Minimal Arduino NRF24 KISS modem: https://github.com/sh123/nrf24l01_arduino_kiss_modem
- Software:
- FreeDV TNC: https://github.com/xssfox/freedv-tnc
- FreeDV data modem UI: https://github.com/DJ2LS/FreeDATA
- FreeDV official UI: https://github.com/drowe67/freedv-gui
- Version adopted for M17 protocol usage: https://github.com/mobilinkd/m17-kiss-ht
- Codec2 iOS wrapper: https://github.com/Beartooth/codec2-ios
- Other interesting projects:
- LoRa mesh text GPS communicator: https://github.com/meshtastic/Meshtastic-device