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
Build the Pennyloop UHF Antenna
by Pennyloop The Pennyloop UHF antenna offers high performance in a very simple and cost effective design. It is also a very compact design lending it... Read more
Scorpion SA6-160 – Mobile Antenna 80 to 6 m
A gasketed sealed Polycarbonate enclosure mounted at the base of the antenna sports two shunt coils switched through a relay. An 8 turn shunt c... Read more
Software
The Software Defined Radio Toolbox
DRAGON OS FOCAL – The Software Defined Radio Toolbox Read more
SDR++ THE BLOAT FREE SDR SOFTWARE
In this video we take a look at a new and upcoming SDR Application called SDR ++ Wide hardware support (both through SoapySDR and dedicated modules) S... Read more
Released SDRuno 1.41
SDRuno Roadmap Updated 13th September 2021 Version 1.41 of SDRuno® is the latest full production version. The remaining features along wit... Read more
Review
Remote TX – HRO at Pacificon 2021
In this video from Pacificon 2021, Marcus Gilson, AK7MG talks about his product, Remote TX, a way of remotely operating your radio from anywhere in th... Read more
RF Interference VS Computer Speakers
Tim, KE8RHS, is having some difficulties with his shack set up. His radio and antenna seem to receive and transmit fine but when he makes a transition... Read more
Ideas for the Shack!
Ideas for the shack with Tim, K3LR and Jeff, KB8ZWT! Read more
News
Mysterious Radio Signal Discovered in Milky Way Center | What Is It!?
Ziteng (Andy) Wang is a PhD student at the University of Sydney. He recently discovered an unusual radio signal coming from the direction of the Milky... Read more
TRI BAND TRANSCEIVER – RS-UV3A
The HobbyPCB RS-UV3A radio module is a 144/220/450 MHz FM transceiver board. The RS-UV3A is a low cost transceiver solution for Packet Radio, repeater... Read more
ARRL Continues Its Efforts to Preserve Amateur Radio Secondary Use of the 3 GHz Band
ARRL President Rick Roderick, K5UR, in a written statement on the newly filed H.R.5378 before the US House Commerce Communications and Technology Subc... Read more
![Why Ham Radio [ ARRL Video ]](https://qrznow.com/wp-content/uploads/2021/10/hq720-1-265x168.jpg)
Why Ham Radio [ ARRL Video ]
Josh Nass, KI6NAZ, of @Ham Radio Crash Course talks about what ham radio is, and answers the question…. “Why Ham Radio?” Read more
High Speed Telegraphy 2021 in Montenegro
September 10-14, 2021, the 17th World Championship High Speed Telegraphy was held in Montenegro. The event was organized by MARP (Montenegrin Amateur... Read more
