Converting ITTY to a text stream

1. consume ITTY

mkfifo fifo.wav
curl http://internet-tty.net:8000/ITTY --output - | ffmpeg -i pipe:0 -f wav -ar 11025 pipe:1 > fifo.wav

2. Decode RTTY data to a file

minimodem rtty -a -5 -i --file ./fifo.wav > data.txt

Other method

mkfifo fifo.wav
ffmpeg -y -i http://internet-tty.net:8000/ITTY -r 8 -preset ultrafast -fflags nobuffer fifo.wav

minimodem rtty -a -5 -i --file ./fifo.wav | netcat -l 4080 -

nc localhost 4080