Hi All,

You may discuss different issues! In FT8 mode Sam is correct as the signals are 
reached only on the frequencies displayed on the waterfall. In JT65 and Q65 the 
situation is different at there is a spinner called F Tol that defines the 
search range independent of the waterfall range. All that is written in the 
User Guide. If something else is happening, then it is extra for the operator 
benefit! I’ll do a FT8 test in my next 24 h recording.

73, Reino OH3mA

 

From: k2txb--- via wsjt-devel [mailto:wsjt-devel@lists.sourceforge.net] 
Sent: 8. huhtikuutata 2023 3:03
To: 'Sam W2JDB' <w2...@aol.com>; 'WSJT software development' 
<wsjt-devel@lists.sourceforge.net>
Cc: k2...@comcast.net
Subject: Re: [wsjt-devel] Truncated Waterfall Display "Feature"

 

Hi Sam.  Well, try it.  It does work. The only requirement is to have the 
decode window width wide enough to cover the actual frequency that is being 
received.  It does not matter how wide the waterfall display is.  Of course, it 
is very helpful to be able to see the signal, so being able to decode outside 
of the window is of limited usefulness.  But it can be done.  Just got a 
message from another guy who said that I “hit the nail on the head”, hi.

 

Anyway, good luck with it.  My system is down right now for some antenna 
repairs and to try to fix an oscillating preamp.  Hope to be back on the moon 
sometime in the next week or two.

 

73, Russ K2TXB

 

From: Sam W2JDB via wsjt-devel <wsjt-devel@lists.sourceforge.net 
<mailto:wsjt-devel@lists.sourceforge.net> > 
Sent: Wednesday, April 5, 2023 3:23 PM
To: wsjt-devel@lists.sourceforge.net <mailto:wsjt-devel@lists.sourceforge.net> 
Cc: Sam W2JDB <w2...@aol.com <mailto:w2...@aol.com> >
Subject: Re: [wsjt-devel] Truncated Waterfall Display "Feature"

 

Hi Russ, 

 

I don't beleive WSJT-X will decode any messages beyond the visual 
representation on the wide waterfall. 

 

If the right hand side of the waterfall terminates at 2000 Hz, WSJT-X will not 
decode beyond that.

 

That has been my experience. If your monitor resolution can not display a 
waterfall range of 200 - 2600 with bin/pixel set at 2, just increase it to 3 or 
higher as needed.

 

73,  

 

Sam W2JDB

 

 

-----Original Message-----
From: k2txb--- via wsjt-devel <wsjt-devel@lists.sourceforge.net 
<mailto:wsjt-devel@lists.sourceforge.net> >
To: 'Black Michael' <mdblac...@yahoo.com <mailto:mdblac...@yahoo.com> >; 'WSJT 
software development' <wsjt-devel@lists.sourceforge.net 
<mailto:wsjt-devel@lists.sourceforge.net> >
Cc: k2...@comcast.net <mailto:k2...@comcast.net> 
Sent: Wed, Apr 5, 2023 2:45 pm
Subject: Re: [wsjt-devel] Truncated Waterfall Display "Feature"

Sorry folks, I agree it would seem that way.  But only because there is no way 
to set the decoding window if you cannot see it.  I did not think of that, when 
I dashed off that message this morning.  And actually, if you set the decoding 
window large enough, I still think it would decode signals outside the 
waterfall range.   For example, I set the range to 1000, and center frequency 
to 1400 Hz.  That will now decode anything from 400 to 2400 Hz.

 

I still do not believe you need to be able to see it, to decode it.

 

Also… I routinely run my system with bins/pixel set to 2.  With the low end set 
to 200 Hz, it shows me everything up to 2600 Hz.  That is almost always 
sufficient.  Don’t see any advantage to asking for a default setting greater 
than that.

Russ K2TXB

 

From: Black Michael via wsjt-devel <wsjt-devel@lists.sourceforge.net 
<mailto:wsjt-devel@lists.sourceforge.net> > 
Sent: Wednesday, April 5, 2023 12:47 PM
To: k2txb--- via wsjt-devel <wsjt-devel@lists.sourceforge.net 
<mailto:wsjt-devel@lists.sourceforge.net> >
Cc: Black Michael <mdblac...@yahoo.com <mailto:mdblac...@yahoo.com> >
Subject: Re: [wsjt-devel] Truncated Waterfall Display "Feature"

 

Not true -- you only decode what's in the waterfall.

 

Mike W9MDB

 

 

On Wednesday, April 5, 2023 at 11:41:35 AM CDT, k2txb--- via wsjt-devel 
<wsjt-devel@lists.sourceforge.net <mailto:wsjt-devel@lists.sourceforge.net> > 
wrote: 

 

 

Dwane, I am almost certain that your assumption in incorrect.  For WSJT in 
general, it does not matter what the settings for the waterfall display are set 
to.  They have nothing to do with decoding, they provide only visual signal 
recognition.  So, if there is a decodable signal above the 1500 Hz it will 
still decode.  It is much more important to make sure his receiver bandwidth is 
wide enough to pass the signal at that frequency.

73, Russ K2TXB

-----Original Message-----
From: Dwayne Sinclair via wsjt-devel <wsjt-devel@lists.sourceforge.net 
<mailto:wsjt-devel@lists.sourceforge.net> > 
Sent: Wednesday, April 5, 2023 11:35 AM
To: WSJT software development <wsjt-devel@lists.sourceforge.net 
<mailto:wsjt-devel@lists.sourceforge.net> >
Cc: Dwayne Sinclair <dwayne_sincl...@me.com <mailto:dwayne_sincl...@me.com> >
Subject: [wsjt-devel] Truncated Waterfall Display "Feature"

Last night, I met an operator who was struggling with EME on 23CM after 
abandoning EME on the 70CM band. As soon as he started up WSJT-X, I noted his 
waterfall display was set to Bins/Pixel 2 instead of 5/6 and less than 1500Hz 
was displayed on the screen. All decodes 1500Hz and up were not decoded. I am 
pretty sure this was the cause of his issues on 70CM together with his current 
issues on 23CM and the “lack of decodes” as he complained. 

I have to ask - Can we fix this so that irrespective of what the Waterfall 
window displays, decodes will still occur for the full 3KHz or whatever value 
is specified in advanced options.

73 Dwayne AB6A 

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