chirppy VS amodem

Thanks. I have 30 examples I got from the API, many moons ago https://github.com/moreati/chirppy/blob/master/examples.json. My finite field knowledge is not up to solving it analytically, my attempts to brute force it are in https://github.com/moreati/chirppy/blob/master/trials.py. That includes functions to go between the characters, and integer representations.

I made a send-only Python client, back in the day. https://github.com/moreati/chirppy

This will get you started:

Tony Fisher wrote V.32 soft modem stack for SGI Indy back in 1996. York University couldnt handle hosting whole 8 megabytes of his stuff https://www.cs.york.ac.uk/news/fisher/home-page but at least they had the decency to upload it to github instead of just deleting https://github.com/university-of-york/cs-www-users-fisher/tr... Randy Rossi rewrote this project and got working V.21/23 https://github.com/randyrossi/fisher-modem

Fabrice Bellard, because of course he did :), implemented his own version all the way to V.34 with parts of V.90 https://bellard.org/linmodem/

V.21 modem implemented in Gnu Radio https://web.archive.org/web/20170627151353/http://aaronscher...

amodem - good source of ready made modulation implementations https://github.com/romanz/amodem

minimodem- simple radio link FSK modem https://github.com/kamalmostafa/minimodem

audsl - leased line project, not compatible with standard modems https://www.araneus.fi/audsl/ but might give some ideas.

This one is excellent, you can transmit and receive data as audio OFDM : https://github.com/romanz/amodem You will probably need to pipe it to a modulator for RF transmission.

https://github.com/romanz/amodem is the tool i used to wrap netcat data into.

You need to "encode" it in some way; https://github.com/romanz/amodem can help.