Breaking – OFDM-AB – IP400 Refactored
The Amateur Radio data communications revolution of the 21st century.
Zero Retries

Geographic analysis of US Amateur Radio licenses using FCC and Census data
Where have new grants grown over the past X months? Do older counties have higher ham density? (ecological correlation)
KK4SW

Amber Silver Alert net Program (ASAP)
How about passing traffic from field deployed amateur operators to local law enforcement about the status and progress of an AMBER alert search team?
KF5THB

ZRDC 2026 registration now open
This year’s conference will bring together Hams and people interested in the technological innovations in Amateur Radio to explore and listen to expert speakers, regarding various topics pertinent to digital communications.
Zero Retries

How to become a Radio Amateur
When you discover a good thing it’s human nature to want to share it with others.
KE9V

Choosing FT8 frequency & interval on 6 meters
There are behaviours that are unique to 6 meters due to the unique character of DX propagation.
Pattern and Match

bkjbbs
Packet radio BBS, KISS, and AX.25 library for Node.js.
jfedyczak

If your cell phone doesn’t work during a disaster, ‘Look for the houses with an antenna’
The West Contra Costa Emergency Radio Group, founded in 2018, has grown to include dozens of members in multiple cities who have the technology to communicate during emergencies.
Richmondside

My radio club asked me to assemble and evaluate their new Hustler repeater antenna
Anybody who may aspire to build their own 3-element stacked 5/8-wave 2-meter antenna will find this material valuable.
K8EBR

cw-dit: Cross-platform multi-channel CW/Morse decoder in Rust
With an SDR, skim every CW signal across the radio’s full sampled bandwidth.
KK4SW

Building a homemade weather radar with a HackRF or PlutoSDR and salvaged automatic RV dish
After nearly being hit by a tornado that NEXRAD didn’t see coming, Koakno decided to build his own DIY self-contained mobile weather radar built from a $5 salvaged RV satellite dome.
RTL-SDR

Video

APRS net control software
Net Central works in a real net environment, covering the check-in workflow, live map tracking, messaging alerts, and the close net reporting process, built for Amateur Radio operators who want a modern, automated approach to running APRS based nets for EmComm, ARES, and general Amateur Radio net control operations.
KM4ACK