Where to start on creating radio circuits
Get a copy of the &quot;ARRL Handbook 2021&quot; from your local library, it is a Six-Volume Book Set. It should show what you are trying to decode but you will have to interpret it as I do not believe it shows a connection to an arduino. This link has a lot more information: https://www2.eecs.berkeley.edu/Pubs/TechRpts/2017/EECS-2017-91.pdf  Here is a link they did it with an Arduino: http://www.kk5jy.net/psk-modem-v1/  I used this &quot;decoding BPSK data with arduino&quot; as a search term and found lots of data. It has been a long time since I have done anything with BPSK, I hope this answers your question.