Build an ESP32 Fox Hunt Beacon with 9M2PJU Firmware
An open source ESP32 firmware that turns any cheap handheld radio into an IARU-standard ARDF…
Amateur Radio Units Explained: dB, dBm, Watts, SWR, SNR, SINAD, dBi and More
Amateur radio is full of numbers: watts, volts, ohms, decibels, megahertz, microvolts, SWR, SNR, SINAD,…
VARA Modem for APRS: What It Is and Why It Matters
VARA is a Windows-based soundcard software modem developed by EA5HVK in Spain. It comes in…
Can You Use a Malaysian PMR Walkie Talkie Overseas?
Short answer: You can bring it, but you can’t always use it. Your PMR446 walkie…
9M2PJU PRO SIGNAL
Professional Terrain-Aware RF Coverage for Amateur Radio Operators Understanding how far your signal truly reaches…
SkyRoof: All-in-One SDR and Satellite Tracking for Ham Radio Enthusiasts
For amateur radio operators and satellite enthusiasts, SkyRoof is an exciting open-source Windows application that…
A Look at PinPoint APRS: Field-Tested, Feature-Packed, and Free
If you’ve ever been involved in emergency communications, public service events, or even casual ham…
9M Bunkers on the Air (9MBOTA) – Malaysia Joins WWBOTA!
“CQ CQ Bunkers on the Air - from a site once guarding our shores, now…
SPLAT! – Open Source RF Propagation Tool for Linux
If you're into amateur radio and ever wondered how far your signal actually travels -…