406decoder

Decodes 406M EIPRB data, based on already working code from F4EHY.

How to install

First we need to install some prerequisites.

$ apt-get update && apt-get install -y \
    gcc \
    build-essential \
    rtl-sdr \
    sox \
    libsox-fmt-all \
    pulseaudio \
    usbutils

Then, everything is in the app folder, so once in it please call:

$ gcc ./dec406_V7.c -lm -o ./dec406_V7 \
    && chmod u+x ./dec406_V7
$ gcc ./reset_usb.c -lm -o ./reset_usb \
    && chmod u+x ./reset_usb

$ python -m pip install -r requirements.txt

How to start

1. Plug your favorite RTL-SDR device to your machine.
2. In the app directory, call python decoder.py -h for parameters description.

usage: decoder.py [-h] [-s FREQ_START] [-e FREQ_END] [--ppm PPM] [--osm] [-T TELEGRAM_TOKEN] [-C TELEGRAM_CHATID] [-O OUTPUT_DIRECTORY]

Scanner la fréquence des balises 406MHz.

options:
  -h, --help            show this help message and exit
  -s FREQ_START, --freq-start FREQ_START
                        Fréquence de départ
  -e FREQ_END, --freq-end FREQ_END
                        Fréquence de fin
  --ppm PPM             Décalage PPM
  --osm                 Activer osm
  -T TELEGRAM_TOKEN, --telegram-token TELEGRAM_TOKEN
                        Telegram bot token
  -C TELEGRAM_CHATID, --telegram-chatid TELEGRAM_CHATID
                        Telegram chat ID
  -O OUTPUT_DIRECTORY, --output-directory OUTPUT_DIRECTORY
                        Output directory, default automatically generated.

Credits

Full credits to F4EHY for the decoding part.