9600 Baud Packet Radio Modem Design ----------------------------------- Papers of ARRL 7th Computer Networking Conference (US), Oct 1988. pps 135- 140 Also: Proceedings of the first RSGB Data Symposium, Harrow, England July 1988. (12 pps). Also: "Packet: Speed, More Speed and Applications", ARRL 1995. ISBN 0-87259-495-5 Chapter 1. The theoretical minimum audio bandwidth required to send 9600 baud binary data is 4800 Hz. Since a typical NBFM radio has an unfiltered response from zero to some 8 kHz, transmission of 9600 baud binary data is perfectly possible through it. This paper describes a successful implementation. It is available on-line from ftp.amsat.org as the file: /amsat/articles/g3ruh/a109.zip