Petlowany Antennas by K6NO
- WorldRadio Article on Petlowany antennas base on this principle: if a length of wire is wound into a spiral-shaped coil and excited by a radio frequency current connected to the innermost portion of the coil, it will then, and only then, exhibit RF characteristics that closely approximate those of a resonant linear wire of the same length
- Freeware windows program by WE3NEA that allow to view and edit the Master Callsign Database file used in many contesting programs, import and export callsigns, auto-download announced DX operations.
D-StarLet - D-Star Radio Messaging System
- A web-based text messaging application using D-Star digital data technology. Client server environment, where server can run linux windows or macos os with apache tomcat by Dean K. Gibson.
- A simple command-line-based program
for the exchange of common data between D-Star radios
- KC9L PSK is a free PSK31 program based on AE4JY’s PSKCore DLL. It supports 5 RX channels, full duplex operation, and more. Even if it's development has been dismissed, is a good tool for windows 95/98 pc.
SPLAT! for Windows
- This free software is useful for visualizing terrain and performing Longley-Rice path loss and coverage prediction using the Irregular Terrain Model.
A Windows port of the Linux-based SPLAT by John Magliacane.