Generate AX. 25 Modem signals with a PIC.

[skimask]

Hi Skimask,

Thanks for your reply. I have used Freqout in the past to create tones with the simple filter , but how do I convert serial data into an audio signal, D-A conversion? not sure what and how to send it to 4 bits on eg. PortB.0 to PortB.3 with R2R D-A?

I bought PBP many years back from MeLabs and updates from local distributor.

BR
Pic Toy

XR2206?

I just looked at the spec's for AX.25...
Good luck with that...