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Locked Q65 only decoding the strongest station #decode
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Mack Edmonson
Please let me know how it goes with the test, again sorry about my error. 73. CUL. Mack
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On Dec 17, 2021, at 11:03 PM, Wayne Newport <wazzan1@...> wrote: |
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Wayne Newport
Hi Mack yes my maximum drift is set to 0. Will try tomorrow and see how it goes with the F TOL on 20. Unfortunately there were no multiple stations on this morning to test it
cheers Wayne VK4WTN |
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Mack Edmonson
Wayne, I have made a mistalke about my settings, my F tol is at 20 and has never been changed. It is the Max drift setting that I keep at 0 . If i change the Max drift to anything other than zero I am unable to decode multiple stations and must have the RX cursor on the station to be decoded. I apologize for making such an error. What is your setting for Max drift??
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Mack W4ENN -----Original Message-----
From: Lance Collister, W7GJ <w7gj@...> To: main@WSJTX.groups.io Sent: Fri, Dec 17, 2021 4:50 pm Subject: Re: [WSJTX] Q65 only decoding the strongest station #decode F Tol should not be set to zero. I keep mine at 20 Hz, and use the cursor on the Wide Graph to select the individual station I want to decode. All of the stronger stations on the wide graph are also decoded. GL and VY 73, Lance On 12/17/2021 22:43:17, Mack Edmonson via groups.io wrote: I cannot find any information about the use of the F tol setting, I only know that if it is set to anything other than zero , you must have the receive frequency cursor on the exact frequency you wish to receive otherwise there are no decodes. I went through the same experience as you when I first started using Q65 mode. I inquired about the use of F tol and got no response from anyone so I just set it to zero and went about my business. I have learned that it is best to use “normal” decode and “enable averaging” seems I get faster decodes of weaker signals. Good luck. Merry Christmas-- Lance Collister, W7GJ(ex WA3GPL, WA1JXN, WA1JXN/C6A, ZF2OC/ZF8, E51SIX, 3D2LR, 5W0GJ, E6M, TX5K, KH8/W7GJ, V6M, T8GJ, VK9CGJ, VK9XGJ, C21GJ, CP1GJ, S79GJ, TX7MB) P.O. Box 73 Frenchtown, MT 59834-0073 USA TEL: (406) 626-5728 QTH: DN27ub URL: http://www.bigskyspaces.com/w7gj Skype: lanceW7GJ 2m DXCC #11 - 6m DXCC #815 - FFMA #7 Interested in 6m EME? Ask me about subscribing to the new Magic Band EME email group, or just fill in the request box at the bottom of my web page (above)! |
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Lance Collister, W7GJ <w7gj@...>
F Tol should not be set to zero. I keep mine at 20 Hz, and use the cursor on the Wide Graph to select the individual station I want to decode. All of the stronger stations on the wide graph are also decoded. GL and VY 73, Lance
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On 12/17/2021 22:43:17, Mack Edmonson via groups.io wrote:
I cannot find any information about the use of the F tol setting, I only know that if it is set to anything other than zero , you must have the receive frequency cursor on the exact frequency you wish to receive otherwise there are no decodes. I went through the same experience as you when I first started using Q65 mode. I inquired about the use of F tol and got no response from anyone so I just set it to zero and went about my business. I have learned that it is best to use “normal” decode and “enable averaging” seems I get faster decodes of weaker signals. Good luck. Merry Christmas --
Lance Collister, W7GJ(ex WA3GPL, WA1JXN, WA1JXN/C6A, ZF2OC/ZF8, E51SIX, 3D2LR, 5W0GJ, E6M, TX5K, KH8/W7GJ, V6M, T8GJ, VK9CGJ, VK9XGJ, C21GJ, CP1GJ, S79GJ, TX7MB) P.O. Box 73 Frenchtown, MT 59834-0073 USA TEL: (406) 626-5728 QTH: DN27ub URL: http://www.bigskyspaces.com/w7gj Skype: lanceW7GJ 2m DXCC #11 - 6m DXCC #815 - FFMA #7 Interested in 6m EME? Ask me about subscribing to the new Magic Band EME email group, or just fill in the request box at the bottom of my web page (above)! |
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Mack Edmonson
I cannot find any information about the use of the F tol setting, I only know that if it is set to anything other than zero , you must have the receive frequency cursor on the exact frequency you wish to receive otherwise there are no decodes. I went through the same experience as you when I first started using Q65 mode. I inquired about the use of F tol and got no response from anyone so I just set it to zero and went about my business. I have learned that it is best to use “normal” decode and “enable averaging” seems I get faster decodes of weaker signals. Good luck. Merry Christmas
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Mack. W4ENN On Dec 17, 2021, at 3:38 PM, Wayne Newport <wazzan1@...> wrote: |
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Wayne Newport
You might be on the right track Mack. I think the lowest F Tol goes is 1. Just talked to another local ham who had the same problem and he lowered his F Tol to 100hz and now is decoding multile stations. And it doesn,t appear to matter where the F Tol is centred. We are using @FAST@ on the decode menu. All I need is some signals to try it.
cheers Wayne VK4WTN |
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Wayne Newport
Thanks Charlie I will try to do that. Had the same problem today several stations on waterfall and only decoding the strongest signal. I can select the undecided signal set F Tol to 50 and hit the decode button and it will decode ok. It’s almost like the single decode in settings is ticked although it is untucked. Talked to several vk stations that have the same problem. My computer has plenty of capacity so it’s not the computer being overwhelmed
Cheers Wayne VK4WTN |
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Charles Suckling
Hi Wayne Interesting. If you can collect some wave file examples (Save All) and send me a few where you are seeing this behaviour, I would be happy to take a look at them here. 73 Charlie On Thu, 16 Dec 2021 at 08:32, Wayne Newport <wazzan1@...> wrote: Thanks Charlie, the signals yesterday weren’t overlapping and the weaker signal was around -10.I set F Tol to 50hz positioned on the weaker signal but still only decoded the strongest signal. I talked to another ham friend this morning and he has exactly the same problem |
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Wayne Newport
Thanks Charlie, the signals yesterday weren’t overlapping and the weaker signal was around -10.I set F Tol to 50hz positioned on the weaker signal but still only decoded the strongest signal. I talked to another ham friend this morning and he has exactly the same problem
Wayne VK4WTN |
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Buddy Morgan
I suspect overlaps, also. Here in the South Eastern United States, some of us are using Q65-15A. These signals are 433 Hz wide. You can get five signals into the passband. I have had multiple decodes. We have our WSJT Activity Night, every Monday. We get on the bands, 2M and higher, xxxx.174 MHz, FT8 and recently xxxx.170 MHz Q65-15A. Be most happy to have some of you, join us.
Buddy WB4OMG EL 98
-----Original Message-----
From: Charles Suckling <g3wdg1@...> To: main@wsjtx.groups.io Sent: Wed, Dec 15, 2021 3:14 am Subject: Re: [WSJTX] Q65 only decoding the strongest station #decode Hi Wayne
A couple of possibilities that I can think of that may be coming into play.
Firstly, multidecoding is not as sensitive as decoding signals individually, so the signal that does not decode may just simply be below the threshold.
Secondly, if the signals are overlapping, the one that decodes can block out the other signal.
Things to try are to attempt a manual decode of the signal that does not decode, possibly with a lower value of Ftol (btw Fol cannot be set to 0!). You could try a value such as 50Hz, or maybe a little lower, but be careful to set the mouse cursor exactly on the lowest tone of the signal. Invoking a manual decode I believe uses Deep decoding automatically, which may gain you a little more sensitivity compared to Fast. Manual decoding is either by double clicking on the signal on the waterfall, or single click and press Decode button.
If you were saving wave files, making these available would help further analysis.
73
Charlie DL3WDG
On Wed, 15 Dec 2021 at 01:00, Wayne Newport <wazzan1@...> wrote:
hi all, just stated using Q65 submode A, T/R 30 sec. I am decoding single stations ok but if there are two or more signals on the screen I am decoding only the strongest station. |
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Charles Suckling
Hi Wayne A couple of possibilities that I can think of that may be coming into play. Firstly, multidecoding is not as sensitive as decoding signals individually, so the signal that does not decode may just simply be below the threshold. Secondly, if the signals are overlapping, the one that decodes can block out the other signal. Things to try are to attempt a manual decode of the signal that does not decode, possibly with a lower value of Ftol (btw Fol cannot be set to 0!). You could try a value such as 50Hz, or maybe a little lower, but be careful to set the mouse cursor exactly on the lowest tone of the signal. Invoking a manual decode I believe uses Deep decoding automatically, which may gain you a little more sensitivity compared to Fast. Manual decoding is either by double clicking on the signal on the waterfall, or single click and press Decode button. If you were saving wave files, making these available would help further analysis. 73 Charlie DL3WDG On Wed, 15 Dec 2021 at 01:00, Wayne Newport <wazzan1@...> wrote: hi all, just stated using Q65 submode A, T/R 30 sec. I am decoding single stations ok but if there are two or more signals on the screen I am decoding only the strongest station. |
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Mack Edmonson
That is f tol set to zero. W4ENN. Mack
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On Dec 14, 2021, at 6:00 PM, Wayne Newport <wazzan1@...> wrote: |
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Mack Edmonson
Wayne, set tolerance to zero. I think that will correct the issue.
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On Dec 14, 2021, at 6:00 PM, Wayne Newport <wazzan1@...> wrote: |
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Wayne Newport
hi all, just stated using Q65 submode A, T/R 30 sec. I am decoding single stations ok but if there are two or more signals on the screen I am decoding only the strongest station.
My settings are Single decode NOT ticked, Decode menu- FAST selected. F Tol is set 1000hz Receive audio level is set at 40db on the graph any ideas anyone. cheers Wayne VK4WTN |
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