Weak signal ham radio communication
Ham Radio Digital Modem Application
Library to control radio transceivers and receivers
Amateur Radio AX.25 chat and PBBS program using Linux's AX.25 stack
Portable rotator for amateur satellite tracking
morse daemon for the serial or parallel port
DX Cluster client for radio amateurs
A software gps simulator
Software defined radio for Linux and Mac
Wavelength Calculator
An open source Acars decoder with rtl_sdr frontend
Multiplatform Ham Radio APRS and Mapping Program
Amateur Radio (Ham) exam preparation tool
Trainer helping people learn Morse code in an easy (and fun) way
An impressive early implementation of TCP/IP
A Java application for transferring computer files in 5 letter groups
ircDDB gateway is an Open Source G2 gateway / Opendv
aprsdigi, a linux amateur radio APRS digipeater
APRS goodies for HAM radio