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
New! Vertical Loop Yagi ( 6 to 40m ) – Ultra Beam
Vertical Loop Yagi See More : Link Read more
40/20/10 Meter Fan Dipole Attic Antenna by KD2GOE
40/20/10 Meter Fan Dipole Attic Antenna by KD2GOE Read Full Article on http://www.worldwidedx.com : Read more
Building Coaxial Cable Traps by W8WWV
“ “Introduction This page describes the design and construction materials I used to build a coaxial cable trap. A coaxial cable tr... Read more
Software
The QARTest program for Contest
There are many Italian radio amateurs who use special programs to manage the various national and international contests. During this evening we will... Read more
LogHX – The freeware logger software, designed as complete Ham Radio environment
LogHX able to: Keep a QSO accounting Track and check of e-QSL and paper QSL exchange, via QSL-manager or direct Check preview QSO in run time Use data... Read more
Review
Radioddity GA-510 10-Watt Handheld Review
➤ UP TO 8 MILES RANGE: A further and more impressive communication range comes from the 10W high power feature. The Radioddity GA-510 can be set in 3... Read more
News
Slow Scan TV from ISS January 30-31
Russian cosmonauts are expected to activate Slow Scan Television (SSTV) image transmissions on 145.800 MHz FM from the International Space Station on... Read more
HuskySat-1 with VHF/UHF Linear Transponder Set to Deploy Soon
The University of Washington’s HuskySat-1 3U CubeSat, launched November 2, 2019, is set to deploy on January 31 after the vehicle that carried it to t... Read more
Winlink Development Team Members Awarded Tennessee Military Department Patriot Medals
In a recent ceremony, two Winlink development team members were awarded the Military Department of Tennessee Adjutant General’s Distinguished Patriot... Read more
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New IARU Region 1 record on 134 GHz – 65km
Photo: http://www.db6nt.de/ Hallo Matej, I send data about new 134 GHz IARU Region 1 Record: 134 GHz DB6NT JO50TI 559 DK4RC JO60GJ 589 CW Tropo 29.12.... Read more
