The TAPR PIC-Encoder (PIC-E) is a general-purpose

packet radio encoder based on the Microchip, Inc.

PIC16F84 PIC microcontroller. The PIC-E was

designed to provide a generic interface between the

digital world (in the form of serial data streams) and

the amateur packet radio world (in the form of AX.25

packets) and is fully programmable by the user. For

example, the user can program the PIC

microcontroller to take serial data from a GPS receiver

or weather station and transmit it as formatted packet

frames. Virtually any data that can be provided to

the device as a serial input stream can be reformatted

and transmitted as 1200 bps packet radio.