How to receive iridium

This howto explains how to receive iridium pager messages with the rad1o.

• A rad1o
• hackrf
• iridium-toolkit

• Install the Requisites:
  • Python (2.7)
  • NumPy (scipy)
  • Matplotlib

• Clone the iridium-toolkit repo.

git clone https://github.com/muccc/iridium-toolkit.git
cd iridium-toolkit

• connect the rad1o in HKRF-OLD mode to your computer.
• let the rad1o have a good view of the sky.
• start the capturing software:

hackrf_transfer  -r /dev/stdout -f 1627000000 -a 1 -l 40 -g 20 -s 2000000 | python2 extractor.py -c 1627000000 -r 2000000 -f hackrf --jobs 2 | grep "A:OK" | tee outfile

• it writes to outfile, captured pager messages can be decoded with:

    
python2 iridium-parser.py outfile

• done

• iridium pager messages in clear