Nobel Laureate Joe Taylor, K1JT, the developer of the popular WSJT “weak-signal communication” software suite is advising users to avoid what he called “unauthorized” versions of his software. He said problems could result by using these builds on the air, and any results that might be shared with the broader user community would be unhelpful.
“Third-party individuals — ie, others not part of the WSJT development team — have been compiling WSJT-X from the open-source code and making unauthorized ‘releases’ of their builds,” Taylor said September 8 in a discussionofWSJT-X “fast modes” on his website. “I do not recommend use of these builds on the air. If you operate with one of these unauthorized ‘rXXXX’ code revisions in our experimental code branch, you have no idea what you’ve got.”
Taylor said that such programs “quite possibly” have been built from an intermediate, temporary “save” of various files that were not intended to produce a usable program. Subsequent observations regarding what does or does not work, he said, then become “worse than useless. [T]hey waste your time and ours.”
WSJT-X implements JT9, which Taylor has described as “a new mode optimized for weak-signal communication on the LF, MF, and HF bands.” Taylor said JT9 is about 2 dB more sensitive than JT65 while using less than 10 percent of the bandwidth. WSJT-X is an “experimental” or “extended” package. Plans call for the eventual inclusion of other popular modes now supported in WSJT.
A new alpha release of experimental WSJT-X v1.6.1, r5865, includes major improvements to the JTMSK decoder.
Taylor also recently posted information about new “Fast JT9” submodes for meteor-scatter communication on 28 and 50 MHz. The post includes a brief development history and instructions.
“Since its origin in the dark ages (ca 2001) WSJT has supported ‘fast’ modes (designed for meteor scatter, etc) and ‘slow’ modes (optimized for EME and other weak-signal propagation types),” he said. “The most recent new mode, JT9, now has both fast and slow submodes.”
He said the new, experimental JT9 submodes use the same message structure, encoding, and modulation type as JT9A (the original version), but wider tone spacing and optional faster keying rates. Among other improvements, it features a 5× speed increase for the fast JT9 decoder.
More information on the WSJT software suite is available on Taylor’s website
Source:ARRL
Piotr SP3UQE will be active from Ghana, starting 15 September 2015, as 9G5SP. QSL via home call. Source: Read more
FlexRadio Comparison Radio Model FLEX-6400 FLEX-6400M FLEX-6600 FLEX-6600M FLEX-6700 MSRP $ 1999 $ 2999 $ 3999 $ 49... Read more
Here’s a short demonstration on the new digital mode FT-8 developed by K1JT & K9AN. Part of the WSJT-X software suite. We’ll go over h... Read more
Here is an old ham radio operators trick for cleaning wires for soldering that are old and corroded. It is hard to find this technique printed anywhe... Read more
This is an unboxing video about the Elad FDM-DUO, a small stand alone SDR QRP, also comes with a complete SDR control software. Read more
Adjustable 1/4 wave antenna – homebrew version Read more
DX News — ARRL DX Bulletin #11:ZCZC AE11 QST de W1AW DX Bulletin 11 ARLD011 >From ARRL Headquarters Newington CT March 19, 2015 To a... Read more
Ham exams are administered by volunteer examiners, and you can become one yourself! Find out how to help. Read more
Baofeng prohibits unrestricted New Zealand’s regulator RSM reports: In August, we mentioned creating a prohibition notice for unrestricted two-w... Read more
K8XS – JK Antennas, JK802 (2el-80M), JK2040 Grande (5el-20M/4el-40M Full-size), JK304 (4el-30M) Stack on a 180Ft LUSO Tower. Read more
Recent Posts
9G5SP Ghana
FlexRadio Comparison
New Digital Mode FT-8 Ham Radio Digital Mode for the Fast & Furious!
How to perfectly clean wires in minutes! by NH7ZE
Unboxing Elad FDM-DUO – Small stand alone SDR QRP
Adjustiwave Antenna – 80m through 2m
ARRL DX Bulletin #11
Become a Volunteer Examiner by KE0OG
New Zealand prohibits unrestricted Baofeng , Pofung and Wouxun
K8XS – JK Antennas Stack [ Video ]
Warning: file_get_contents(https://plusone.google.com/_/+1/fastbutton?url=https%3A%2F%2Fqrznow.com%2Fk1jt-advises-wsjt-x-users-not-to-use-unauthorized-builds-of-his-software%2F): failed to open stream: HTTP request failed! HTTP/1.0 404 Not Found in /home/qrznow/public_html/wp-content/themes/goodnews5/framework/functions/posts_share.php on line 151