WSJT-X version 2.4.0 now is available in general release. According to co-developer Joe Taylor, K1JT, WSJT-X version 2.4.0, includes a new digital mode, Q65. This protocol is designed for two-way contacts over especially difficult propagation paths, including ionospheric scatter, troposcatter, rain scatter, TEP, EME, and other types of fast-fading signals.
“On paths with Doppler spread more than a few Hertz, the weak-signal performance of Q65 is the best among all WSJT-X modes,” the Quick Start Guide asserts.
WSJT-X version 2.5.0-rc1 (beta) version has been released. According to the Release Notes, version 2.5.0 “the Q65 decoder has been enhanced to measure and compensate for linear frequency drift in Q65 signals.”
Q65 uses 65-tone frequency-shift keying and builds on the demonstrated weak-signal strengths of QRA64, a mode introduced to WSJT-X in 2016. Q65 offers user message and sequencing identical to that in FST4, FT4, FT8, and MSK144. It includes a unique tone for time and frequency synchronization. As with JT65, this “sync tone” is readily visible on the waterfall spectral display. In addition, Q65 provides a sensitive “sync curve” near the bottom of the waterfall window.
Testing showed that Q65 will enable stations with a modest Yagi and 100 W or more and to work one another on 6 meters at distances up to ~2000 kilometers on most days of the year, in dead band conditions.
“An excellent example of targeted uses of Q65 is ionospheric scatter on the 6-meter band,” the documentation states. “Extensive tests on the 1,150-kilometer path between K1JT and K9AN have shown that with 300 W power output, nearly every Q65-30A transmission is copied correctly by the other station.” The 30A refers to the transmit-receive period and spacing width.
For the complete announcement and to download the latest version, visit the WSJT-X website.
The Legendary G5RV Antenna – ARRL The Doctor is In podcast
“The Legendary G5RV Antenna” is the topic of the new (August 15) episode of the ARRL The Doctor is In podcast. Listen…and learn! 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
New Antenna Uses Saltwater and Plastic to Steer Radio Beams
Liquid-based antennas offer unique advantages over metal ones By Michelle Hampson A new antenna that uses saltwater and plastic instead of metal to sh… Read more
A Dualband 50/70MHz Yagi with single feedpoint – 5/7 (12) element 144/70MHz Yagi (2.4m)
An Excellent Dual Band Yagi for 70/144MHz on a 2.4m boom and single feed point The 4-2-12 Dual Band Yagi has a total of 12 elements, 5 elements are us… Read more
CrankIR Series Antenna Vertical
Steppir Antenna Verticals are the only true ¼ wave continuous coverage antennas available for the HF bands. The SteppIR technology has had a pr… Read more
Diamond K-400 Mobile Antenna Mount, Tarheel Antenna Update
Deluxe heavy duty trunk lid/hatchback mount. Strongest, most universal mobile mount available. 2-axis adjustment gives flexibility in mounting locatio… Read more
DU3500AL Automatic Tuner by HA8DU
DU3500AL Automatic Tuner by HA8DU Frequency range : 1,8-30MHz Matching range : max power 5:1 SWR 1,8MHz 35 ohm – 150 ohm 3,5MHz … Read more
SDR Control panel E-coder
SDR Control panel E-coder Product Description The E-coder Control Panel is designed to control a SunSDR2 transceiver or ColibriDDC receiver in… Read more
Airspy HF+ Discovery is the Most Refined HF/VHF SDR
The Airspy HF+ Discovery sets a new standard in terms of reception performance with extra pre-selectors for all the supported bands and a New DSP Core… Read more
AMPLIFIER HF2013DX-A – HF 2KW
The linear amplifier HF2013DX-A is designed for all shortwave bands from 1.8MHz to 29MHz amateur (including WARC) and all operating modes. It is equip… Read more
International Space Station to be in Cross-Band Repeater Mode for Field Day
The Amateur Radio on the International Space Station (ARISS) cross-band repeater will be available for ARRL Field Day, June 26 – 27. Contacts wil… Read more
New IARU-R1 HF band plan released
The HF band plan in its version of 16 October 2020 (Virtual General Conference “Novisad”) including the annex has been revised. The band plan comprise… Read more
ISS SSTV 145.800 FM June 9-10
Russian cosmonauts on the International Space Station (ISS) are planning to transmit Slow Scan TV images on 145.800 MHz FM using the SSTV mode PD-120…. Read more
Frank Donovan, W3LPL, Wins the May 2021 QST Cover Plaque Award
The winning article for the May 2021 QST Cover Plaque award is “What to Expect During the Rising Years of Solar Cycle 25,” by Frank Don… Read more
Radioddity GM-30 GMRS HT Walkie Talkie | Best GMRS Handheld Radio?
Radioddity has a new GMRS HT Walkie Talkie and today we’re going to take a look at what comes in the box and the menu of this new GMRS Handheld… Read more
The post WSJT-X version 2.4.0 Now Generally Available, Version 2.5.0 on the Horizon appeared first on QRZ NOW – Ham Radio News.