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
The New Carolina Windom By Len Carlson, K4IWL
“ As with all ham stations QRO or QRP, ten percent ofa station?s success in quality QSOs is the equipment and the operator. Ninety percent is th... Read more
160-6m HF VERTICAL ANTENNA, 43ft, 1500W
Get 160-6 Meters Coverage and 1500 Watt Operation with a single antenna! This MFJ-2990 is a 43-foot self-supporting vertical antenna that cover... Read more
MFJ-226 – 1-230 MHZ ANTENNA EXPECT TIMES GRAPHIC ANALYZER
MFJ VNA Antenna Analyzer covers 1 to 230 MHz, 1Hz resolution.•Frequency sweep plots: SWR, Impedance, Resistance, Reactance,Phase Angle, Complex Return... Read more
Software
Log4OM 1.36.0 Released
Release notes Version 1.36.0 MAINTENANCE RELEASE Added support to QARTest direct QSO import in Log4OM Communicator (Inbound settings, default port is... Read more
Ham Radio Deluxe Software from Hamcom 2019
“I was privileged to catch up with Mike, WA9PIE, from Ham Radio Deluxe at this year’s Texas Hamcom. He discusses some new features of his... Read more
N6XI presentation to NCCC featuring the N1MM+ Spectrum Display
“N6XI made a presentation to NCCC featuring the N1MM+ Spectrum Display. It covers why you would want to use a spectrum display and why it is bet... Read more
News
Radio Amateurs in India Support Emergency Communication during Cyclone Vayu
At the request of authorities in India’s Gujarat Province, Rajesh Vagadia, VU2EXP, and his niece Shyama Vagadia, VU3WHG, deployed on June 12 to Porban... Read more
HS10KING on QO-100 geostationary satellite
To strengthen the relationship between Thai and Japanese amateur radio operators representatives of the JAMSAT group of Japan have travelled to Thaila... Read more
ARRL Offers “What is Amateur Radio?” Video and PowerPoint Presentation
ARRL has produced and is making available the downloadable video, “What is Amateur Radio?” to use at club meetings and at public events, including ARR... Read more
Ham Radio Satellites to Deploy from ISS
Three BIRDS-3 satellites with Amateur Radio payloads are scheduled to be deployed from the International Space Station on Monday, June 17. The BIRDS-3... Read more
ARRL Foundation Announces 2019 Scholarship Recipients
The ARRL Foundation has announced the 2019 recipients the scholarships it administers. The ARRL Foundation General Fund Scholarship, $2,000 each Maris... Read more
