Hi.

On site:        http://www.net.yu/~dejan
                   http://members.tripod.com/~dejank

You can find RX_PAGER: blueprints, source and software for 16c84 , that
will allow you to build your home-made receiver to
intercept and monitor messages from paging system. You simply connect it
via RS232 port to any PC compatibile computer.

Dejan