Hi All,

Can you please help me to generate AX 25 protocol with a PIC.

How do you generate the 1200 Hz and 2200 Hz frequencies and the data out on a port with R2R ladder on 4 bits?

I am busy building a Packet Radio modem for HAM use. Packet Radio / APRS Transmissions.

I am a licenced Radio HAM and use PBP.

Thanks my Friends

Pic Toy