Hi all,
Does anyone know how to connect a GMSK signal to arduino? I have an old VHF and I would like to tap the discriminator output to read AIS messages via arduino. All I know is that the signal is 9600 baud GMSK.
Joachim
1 Like
Did you ever have any luck decoding AIS signals? I just though about looking into this also.
I use to have an AIS receiver that output a serial feed of the NMEA sentences. I also have some C code that can decode the sentences into human readable form.
I am looking into setting this up and getting a working (Arduino based) AIS decoder. The hardest part for me will be the VHF aspect as I don't understand much of that part.
No luck so far,
I have not been pursuing this yet, as I have so many other projects, and since there was no reply before now. But I would be interested to see you code. The AIS side of things should not be a problem. The easiest option is of course to use a simple ais receiver with serial out, another option is to modify a vhf to make a discriminator output. This is what is used for ShipPlotter with a sound card, and there is a lot of info out there. The problem so far has been finding the c code to interpret the data.
Joachim
1 Like