Malaysian Coordinate Systems: Kertau, Datum, Map Projections, GDM2000, and GDM2020
Introduction If you have ever tried to overlay an old Malaysian topographic map onto a…
The Anatomy of a Lid: History, Psychology, and Evolution of Amateur Radio’s Ultimate Insult
In the close-knit world of amateur radio, reputation is currency. Across the bands, operators are…
Why “Model First, Then Measure” Beats Guesswork in Amateur Radio Antenna Design
Have you ever built an antenna, and it didn't work as well as you thought?…
The Ultimate Handheld Walkie-Talkie Guide for Amateur Radio Beginners
Whether you call it a Handy Talkie (HT) or a walkie-talkie, a handheld transceiver is…
HamLink – A Modern All-in-One Mobile Toolkit for Amateur Radio Operators
HamLink - Ham Radio Toolkit is a mobile application designed for licensed amateur radio operators…
RadioMail 1.5: Off-Grid Email for Amateur Radio
RadioMail 1.5 is an iOS email app that sends and receives messages over amateur radio…
9M2PJU Map & Compass: The Navigation Tool Amateur Radio Operators Need
Navigation and position reporting form the backbone of effective amateur radio operations. Whether you're coordinating…
LightAPRS Gateway 1.0: A Standalone APRS Digipeater and iGate in a Small Box
The LightAPRS Gateway 1.0 is a purpose-built Linux-based APRS gateway board that combines an SA818V…
Radio Messenger Is What Ham Radio Chat Should Have Been All Along
Amateur radio operators have been sending digital messages since the 1980s. Decades of packet radio,…