PACKx01.txt 56 kilobaud modem bug report. PACKx02.txt A/B switch to cross switch mod file. PACKx03.txt Connecting the data engine to your computer. PACKx04.txt Running DDCD. PACKx05.txt CARS digicom board mod. PACKx06.txt Low impedance on the RX audio line. PACKx07.txt Cure for parasitic oscillations on the G3RUH modem. PACKx08.txt Shared interrupt modification. PACKx09.txt How to change the callsign in the Netrom software. PACKx10.txt Software mod for Procomm. PACKx11.bmp Baycom terminal diagram in BMP format. PACKx12.txt TAPR full-duplex 9600 baud modem mods. PACKx13.txt TNC2 duplex mod. PACKx14.txt Reliability mod for TAPR-2's. PACKx15.txt TNC wiring for various radios.