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
10 6 MOXI 5 | NEW FOR 2015! | 10 METER / 6 METER MOXON YAGI HYBRID BEAM
Stunning 2015 design from G0KSC: ten meter Moxon mated with a 3 element six meter Yagi on one boom with a common feedline. Look at the pattern and ban... Read more
The Mark MKII 3 band (10, 15, 20m)
MK II 2 ELEMENT COMPLETE 3 band (10, 15, 20m) Antenna – 5 band (12m, 17m) 8- DELUXE FIBERGLASS QUAD ARMS – 13FT. 2- CUBEX QUAD SPIDERS-ONE... Read more
Heights Tower and SteppIR DB-18 Beam at N6GR (#243)
“Last month while visiting Brad Rich, N6GR, he gave me a tour of his nearly-completed 69-foot foldover tower and his SteppIR DB-18 antenna. He a... Read more
Software
Ham Radio Deluxe v6.7.0.301
This release contains several important customer requests. The Yaesu FTDX101D/MP is added. The last QSL comment is gathered into callsign lookup. The... Read more
SDRUNO 1.4 RELEASE CANDIDATE 3
Warning: This is pre-release software and you install it in the knowledge that it will have bugs and issues. We are looking for feedback on this versi... Read more
Review
![Silphase R1 receiver [ VIDEO ]](https://qrznow.com/wp-content/uploads/2020/07/head-img-265x168.png)
Silphase R1 receiver [ VIDEO ]
Silphase R1 receiver. Telescoping antenna 1.15m. Location is city center Warsaw, Poland. Outside temperature +4 Celsius degrees. Frequency 1413 kHz. I... Read more
News
Hurricane Watch Net Reactivates as Hurricane Warning Posted for the Carolinas
With the National Hurricane Center (NHC) expecting Tropical Storm Isaias to become a hurricane again later today and make landfall this evening, the H... Read more
Slow-Scan Television Activity August 4 – 5 from ISS will Commemorate Apollo-Soyuz
Russian cosmonauts on board the International Space Station plan to transmit slow-scan television (SSTV) images on August 4 – 5. The SSTV images will... Read more
Hurricane Watch Net Activating as Hurricane Isaias Approaches US East Coast
The Hurricane Watch Net (HWN) activated on 14.325 MHz on July 31 at 1500 UTC as Hurricane Isaias [pronounced: ees-ah-EE-ahs] heads toward the US on an... Read more
New Technician HF Privileges Defined: ARRL board accepts final recommendations of the Band Planning Committee
Source:https://swling.com/ During this session, the [ARRL] Board took the following actions: Accepted the final recommendations of the Band Planning C... Read more
FCC Fines HobbyKing Nearly $3 Million for Marketing Unauthorized Drone Transmitters
The FCC has issued a Forfeiture Order (FO) calling for HobbyKing to pay a fine of $2,861,128 for marketing drone transmitters that do not comply with... Read more
