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…
9M2PJU SOTA Bot: SOTAwatch Spots and Alerts on Telegram
If you are active in Summits on the Air, you already know how useful SOTAwatch…
BHI: Cleaner Receive Audio for Amateur Radio Operators
In amateur radio, not every problem is solved with more power or a bigger antenna.…
Why Amateur Radio Buyers Ask If Gear Comes From a Non-Smoking Shack
Learn why ham radio buyers ask whether used transceivers, microphones, and accessories come from a…
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…
9M2PJU Amateur Radio Bearing Finder: A Practical Tool for Ham Radio Operators
Every amateur radio operator has been in this situation: you hear a station calling CQ…
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,…
Malaysia’s License-Free Walkie Talkie Frequencies: The 2025 MCMC Update You Need to Know
If you use walkie talkies for convoys, hiking, events, or work sites in Malaysia, the…
9M2PJU PRO SIGNAL
Professional Terrain-Aware RF Coverage for Amateur Radio Operators Understanding how far your signal truly reaches…