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

DX Engineering Skylark Dual-Band Yagi Antenna DXE-2X7

April 09, 2015 No comments

  Antenna, Beam, Skylark, Duoband Yagi, 17 and 12 meters, 90 mph Wind Rating, 16 ft. Boom Length, Each HF Beam Antenna Type:Yagi   HF Beam Antenn... Read more

The Yagi-Uda Antenna

October 01, 2015 No comments

A Yagi-Uda antenna, commonly known simply as a Yagi antenna, is a directional antenna consisting of multiple parallel dipole elements in a line,[1] us... Read more

“Antenna Wire” is the topic of the latest episode of the “ARRL The Doctor is In”

January 18, 2018 No comments

 “Antenna Wire” is the topic of the latest (January 18) episode of the “ARRL The Doctor is In” podcast. Listen…and learn! More than a half-mill... Read more

Software

SDRuno V1.31 Release

April 09, 2019 No comments

“We are pleased to announce the release of v1.31 of SDRuno. This release contains a number of bug fixes, functional enhancements and other chang... Read more

SmartSDR with multiFLEX Installation

April 09, 2019 No comments

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JS8Call 1.0 Public Release

April 03, 2019 No comments

“Hi Folks! A number of you have participated in the beta testing of the pre-release versions of JS8Call for some time now. Well, good news... Read more

Review

First Look: IC-9700 – Ham Nation 399

April 25, 2019 No comments

Ray Novak and George Thomas check out the new Icom IC-9700. Hooking up an analog microphone to your computer with Bob, coax connectors with Gordo, ham... Read more

Yaesu FTM-400XDR Basic APRS Setup – Ham Radio Q&A

April 23, 2019 No comments

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Wouxun KG-UVN1 Dual Band DMR Review

April 23, 2019 No comments

MAIN  FUNCTIONS 3072 Channels 1024 Contacts 255 Receiving Groups 250 Zones 16 Scan List Radio ID Radio TX Contacts Duan Band and Dual Display Radio Co... Read more

News

Low Audio for ISS SSTV Transmissions Raises Issue of Crew’s Ability to Intervene

April 25, 2019 No comments

Reception problems owing to low audio levels plagued a recent round of Amateur Radio on the International Space Station-sponsored (ARISS) slow-scan TV... Read more

Three BIRDS Constellation CubeSats Delivered to ISS for Orbital Deployment

April 23, 2019 No comments

A Cygnus resupply mission to the International Space Station (ISS) on April 11 also delivered three CubeSats of the BIRDS-3 constellation and three ot... Read more

International Marconi Day

April 22, 2019 No comments

International Marconi Day celebrates the huge part Guglielmo Marconi played in the invention of radio. IMD is a 24 hour amateur radio event that is he... Read more

Icom IC-9700 Review, Demo And Walkthrough

April 18, 2019 No comments

Icom IC-9700 Here it is! The all new Icom IC-9700 tri-band direct sampling transceiver. This is a most impressive rig and I will be showing many more... Read more

“Mentoring the Next Generation” is Hamvention and ARRL 2019 National Convention Theme

April 17, 2019 No comments

With an eye toward helping new and inexperienced hams enjoy the full range of activities that Amateur Radio has to offer, Hamvention® and the ARRL 201... Read more