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
Introducing the SDA 2000 OptimizIR
“Today we’re incredibly excited to announce the launch of our first antenna optimization product: the SDA 2000 OptimizIR. This replaces your e... Read more
Resonant Antennas, HF Mobile, MFJ-1668 Screwdriver
HF Mobile Antenna Covers 80-6 Meters with 4 1/2 foot mobile or 10 foot fixed operation telescoping whip. Continuously adjustable loading coil is 36 in... Read more
![Antennas and Wind [ ARRL The Doctor is In PodCast ]](https://qrznow.com/wp-content/uploads/2018/08/towerbent-265x168.jpg)
Antennas and Wind [ ARRL The Doctor is In PodCast ]
Whether you have a simple wire antenna or a large HF Yagi on a tower, the effects of wind are major considerations. The Doctor offers tips to improve... Read more
Software
SDRSHARP COMMUNITY PLUGIN PACKAGE NOW AVAILABLE
The SDR# developer in conjunction with Rodrigo Pérez have recently endorsed and released a “community plugin package” over on the SDR# dow... Read more
V1.0b of the Spectrum Analyser software developed by Steve Andrew specifically for the RSP line of products
“We are pleased to announce the availability of V1.0b of the Spectrum Analyser software developed by Steve Andrew specifically for the RSP line... Read more
Fldigi v4.1.08 now available
The hard-working development team led by W1HKJ have announced the release of Fldigi v4.1.08. This maintaneance release of Fldigi brings several bug f... Read more
News
CE9/SQ1SGB shortly at Halley VI (WAP GBR-37)
Seba SQ1SGB has informed to leave on mid December 2019 to Antarctica. He will sign CE9/SQ1SGB and will stay at Halley VI Base (WAP GBR-37). Seba has... Read more
Apply now to run GB19YOTA
Youngsters on the Air (YOTA) Month takes place each December to encourage youngsters to get on the air and to learn more about the practical side of t... Read more
IC-9700 ’s new firmware has been released.
This makes it possible to send, receive and show pictures by the IC-9700 itself. Pictures stored on your smartphone or other device can be sent thro... Read more
Japan introduced its entry level Class 4 licence
Japan introduced its entry level Class 4 licence in the the late 1950’s, it would prove to be the world’s most successful category of amat... Read more
Hawaii ARES Leverages Contest Station and Winlink for 2019 Simulated Emergency Test
ARES volunteers in Hawaii took the opportunity of the 2019 Simulated Emergency Test (SET) on October 6 (UTC) to test Winlink radio messaging to the US... Read more
