SNR – Signal-to-Noise Ratio
From the 2018 TAPR Digital Communications Conference, we learn about a true measurement of signal to noise ratio on some of the most popular HF Digital modes.
Signal-to-noise ratio (abbreviated SNR or S/N) is a measure used in science and engineering that compares the level of a desired signal to the level of background noise. SNR is defined as the ratio of signal power to the noise power, often expressed in decibels. A ratio higher than 1:1 (greater than 0 dB) indicates more signal than noise.
Antenna
Squalo antenna for 6m by PA3HCM
Introduction – Squalo antenna Adri PA0RDA, a friend of me, is trying to do some DX on 6m for a while now. His antenna position is... Read more
A Simple Wire Tuner
Here’s a basic, but effective and efficient, antenna tuner for feeding random wires, especially half-wave end-fed wires. Read more
Improved EU1KY Antenna Analyzer CEC V0.3
In this video, not include have a voice, but I placed subtitles on important parts. Please turn on subtitles. Read more
Software
OPENWEBRX VERSION 0.18.0 RELEASED: NEW DECODERS FOR DIGITAL VOICE, DIGITAL HAM MODES
“Hello fellow radio enthusiasts, with great excitement I would like to announce the availability of OpenWebRX Version 0.18.0 as public release.... Read more
Log4OM Release – Version 2.3.0.0
Release note – Version 2.3.0.0 • CAT frequency display is now user configurable for best visual comfort in Settings -> CAT • Added viewable Clublog... Read more
Review
Unboxing the AnyTone AT-D578UV III Pro DMR/FM Mobile Radio
AnyTone AT-D578UVIIIPRO Tri-Band Amateur DMR Mobile Radio with Bluetooth, GPS and BridgeCom University Want the latest and greatest DMR radio? We ar... Read more
News
Monitoring Emergency Radio Frequencies and Scanning
“A question that keeps coming up is, “what frequencies should I monitor during an emergency?” We’re going to cover those frequ... Read more
USA conducts first all-online ham radio exam
The first remote all-online amateur radio Technician license exam was carried out in the United States on March 26, 2020 Marcel Stieber @AI6MS Tweeted... Read more
Coronavirus: Initiative to popularise Amateur Radio and Satellite activities
The West India Zone Regional Coordinator for AMSAT-INDIA, Rajesh Vagadia VU2EXP, is offering students and others the opportunity to learn about amateu... Read more
Field Day 2020 — A Time to Adapt
Many individuals and groups organizing events for Field Day 2020 have been contacting ARRL for guidance on how to adapt their planned activities in th... Read more
