I have been following the forum for quite a while. I would like to put together an RTK solution - I probably should go with NavSpark RAW - but am holding out for a multi constellation solution.
Might you have an application note for the S1315F8-RAW chip?
I also note near the end of its data sheet (or in the FAQ) a note that S1315F8 flash based while NavSpark RAW (or Venus?) is ROM based. Might there be any flexibility to flash its firmware? I'm very keen on GPS/GLONASS