At 01:08 PM 11/15/99 +0000, German wrote: >I want to decode radio amateur packets,they come at 1200 bps >but my receiver does not have digital output: may I use a simple >amplifier and signal shaper (Two anti-parallel connected diodes >and one transistor), to convert analog (processed) output into >square TTL level signal? > >Thanks a lot. >------------------------------------ The easiest way to do this is to use a modem chip, like the MX-COM MX614. It's cheap and works well. There is some sample code that does packet radio reception (and transmission) in the PIC-E software area of www.tapr.org John Hansen