The PR430 is a small device integrating a TNC and a 70cm 6W-transceiver optimized for packet radio (1200 Bd. AFSK & 9600 Bd. FSK) use. It is connected to the host system through an RS232 interface using the common 9-pin sub-D connector. It is running enhanced 6pack as the line protocol.
The PR430 can also be used as a FM-TRX and as POCSAG-TX.
Currently Linux does not support enhanced 6pack, therefor special drivers patches are needed. The patch is available at http://www.linux-mips.org/pub/linux/mips/people/ralf/pr430.