[aprssig] Suggestions for modem designs?
aprs at mulveyfamily.com
Fri Oct 13 07:45:34 CDT 2006
I'm in the midst of working on an embedded APRS tool using the
Parallax Propeller chip. ( http://www.parallax.com/propeller/index.asp
). Right now, I'm working on having it decode APRS packets over a
serial link, as if from a TNC.
The next step is to actually have it decode APRS packets off the
air. Therefore, I'm looking for a good design for a 1200bps modem.
There are a number of MX614-based ones out there, for example, some of
which are pretty minimal, others that have more front-end filtering, etc.
Can anyone suggest particualr implementations that work well? They
don't have to be 614 based - they just seem to be the most common ones
I've run across. I want something that handles both TX and RX, as well.
More information about the aprssig