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 Antenna 50 and 70MHz – 4 el Moxon
EAntenna 5070MOX Only 86cm (34 inch) boom lenght with 2 elements Moxon in 4m and another 2 in 6m band. The gain is 6,03 dBi in 50 MHz. and 5,95 dBi in... Read more
Cushcraft MA6VA – Six-Band Restricted-Space Vertical Antenna
The Cushcraft MA6VA provides amazing coverage, great versatility and incredible performance with an addition of 6 meters. Enjoy the antenna con... Read more
Which Antenna is Better? by Richard N4PBQ
“Real world antenna comparisons I don’t have many choices for my antenna at my residential QTH. I have an80m OCF Dipole (aka Windom) hung... Read more
Software
SDC Skimmer decoding PSK, RTTY, CW at the same time
SDC Skimmer by UT4LW (Yuri) decoding PSK, RTTY and CW at the same time during Russian WW MultiMode Contest (CW, SSB, RTTY, BPSK63) Transceiver: SunSDR... Read more
Download Ham Radio Deluxe Software and HRD Product Manuals
Ham Radio Deluxe v6.7Ham Radio Deluxe v6.7.0.244Ham Radio Deluxe v6.7.0.244Ham Radio Deluxe v6.7.0.244 Ham Radio Deluxe Software Ham Radio Deluxe v6.... Read more
WSJT-X Development Group Announces Second Bug-Fix Release, WSJT-X Version 2.1.2
The WSJT Development Group, which just this week announced the release of WSJT-X version 2.1.1, has now issued a second bug-fix release, version 2.1.2... Read more
News
SAQ, Sweden’s Alexanderson Alternator, Announces Scheduled Christmas Eve Transmission
SAQ, the call sign of the 1920s vintage Alexanderson transmitter in Grimeton, Sweden, is set to be on the air for its annual Christmas Eve transmissio... Read more
The January Edition of Digital QST is Now Available!
The January issue of Digital QST is now available for viewing on your desktop or laptop. Click here to view the issue. It is also available for readin... Read more
ARRL Asks FCC to Dismiss Petition Seeking Declaratory Ruling on Encoded Message Rule
ARRL has asked the FCC to dismiss a Petition for Declaratory Ruling filed by New York University (NYU), that in ARRL’s view proposes a new interpretat... Read more
Dayton Hamvention Admission, Fees to Increase in 2020
Dayton Hamvention® is increasing the cost of admission and its booth fees. Hamvention General Chair Jack Gerbs, WB8SCT, announced this week that gener... Read more
