7465Re: [wsjtgroup] WSJT vs JT65-HF decoding discrepancies
- Jul 4, 2010Hi Bill,
Same here! I work with JT65-HF and WSJT7 since a long time side by side
and with the same audio card of course. What is correctly decoded with
JT65-HF is always decoded by WSJT; SNR may differ +/- 2 dB max.
(may be related to audio level adjustment between the 2 programs?)
Inversely, they are messages correctly decoded by WSJT7 and
they don't appear in JT65-HF window. It's one of the reasons i continue to
use exclusively WSJT7 for QSO. In ~ 2years, i think i get only ONE
false decode with WSJT (or it was a false entry by the TXing station?.)
In my case, false decoding is often related to in band high noise and
i don't see any trace at the specified DF. For me, false decoding is a
"pseudo" call with an unrelated grid locator or, in other cases, some
text with no signification. The "ghost" phenomena is, in my case, an
other problem with a correct call, but timing, SNR, DF, etc are partially
or totally erroneous and are sometimes sended to RB.
But multi-decoding capability of JT65-HF and RB are very nice features!
As you, i'm hoping to find them together...For example, clicking on a
trace in the JT65-HF would activate the WSJT decoding procedure and
allow, in some "limit" cases, to get a missed decoding !
My best 73,
Bill VanAlstyne W5WVO wrote:
> That's interesting, because WSJT is (by design, due to the "deep
> search" capabilities in WSJT that JT65-HF has not implemented) more
> "sensitive" than JT65-HF. And with WSJT, you can try repeatedly to
> "tease" a decode out of any visible pattern. I would guess it's either
> a setup or a use problem. I've run JT65-HF and WSJT7 side by side, and
> I've never seen anything JT65-HF decodes that isn't also decoded (when
> properly clicked on) by WSJT -- and the opposite is oftentimes true
> (WSJT can decode stuff JT65-HF can't), as there is no way to tease a
> decode out of JT65-HF; it either decodes the first time it scans the
> segment, or it doesn't. No do-overs.
> OTOH, the JT65-HF user interface and multiple-decode capabilities are
> WAY COOL. Smile emoticon If only we could put the two together somehow...
> Bill W5WVO
> *From:* Jeremy - N4JIK <mailto:n4jik1@...>
> *Sent:* Sunday, July 04, 2010 4:51 PM
> *To:* email@example.com <mailto:firstname.lastname@example.org>
> *Subject:* [wsjtgroup] WSJT vs JT65-HF decoding discrepancies
> I have been looking at other JT65 software and have noticed that there
> is actually a pretty significant discrepancy between decodes using
> JT65-HF and WSJT7. Unfortunately JT65-HF has been providing more
> decodes which are deeper in the noise whereas WSJT misses a number of
> them. I know it has definitely got to be something I have setup wrong
> but I for the life of me can't figure out what it is.
> Everything is a standard install and I haven't changed anything so far
> other than putting my callsign and grid in. Any assistance would be
> great.. Thanks!
> N4JIK formerly KD4LCR/7J6CEM
> Fort Benning, GA/Phenix City, AL
> Triple Play Award #327
> "The true soldier fights not because he hates what is in front of him, but
> because he loves what is behind him." G. K. Chesterton
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