I've got my Raduino up and running in a sliced turkey box(as a software test bed). It ran fine as delivered, but I now have it loaded with my SSB only code. I didn't like the leading zero in the display(07.150) so I made several changes to the format strings in updateDisplay().
sprintf(b, "%8ld", frequency);
sprintf(c, "%s:%.2s.%.3s.%.3s", "A", b, b+2, b+5);
This displays as A: 7.150.000 LSB
You can find a table of format strings at cplusplus.com
James
KE4MIQ