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  #1 (permalink)  
Old 10-09-2017, 7:33 PM
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Default Skipping behavior on limit search

It seems like my TRX-1 is experiencing some kind of skipping behavior when I do a limit search. Let's say I am searching on the 850-860 MHz for trunked system, the scanner will pause on where signal is present (confirmed using PSR800 and it is a very strong control channel), pauses momentarily, then continues scanning without unmuting. When I pause the limit search on the control channel and turn the squelch way down, the scanner will continue stay muted.

If I scan the trunked system as a normal object, the scanner unmutes on talk group just fine, same with conventional channel, though the scanner seems to be a little bit on the deaf side as compared to my PSR-800.

Has anyone experienced this problem as well? this is getting frustrating.
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Old 10-09-2017, 8:50 PM
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If I'm reading this correctly, I think the issue you're seeing is because the TRX doesn't stop on control channels (but I could be wrong).
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Old 10-10-2017, 1:18 PM
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Why doesn't it stop on control channels? Is there a setting I can use so the TRX-1 (2) will stop on control channels? I had noticed this as well, but I was still "learning" the radios.
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Old 10-10-2017, 1:23 PM
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Quote:
Originally Posted by troymail View Post
If I'm reading this correctly, I think the issue you're seeing is because the TRX doesn't stop on control channels (but I could be wrong).
I believe the TRX will stop briefly on a control channel. Once it realizes it's data only it will move on.
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Old 10-10-2017, 1:25 PM
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Originally Posted by gldavis View Post
Why doesn't it stop on control channels? Is there a setting I can use so the TRX-1 (2) will stop on control channels? I had noticed this as well, but I was still "learning" the radios.
The TRX series doesn't use the control channel for trunking. They scan the voice channels, as I understand it. The only way you will ever get the control channel to un-mute is if it also carries voice traffic.
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Old 10-10-2017, 1:41 PM
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Thanks,actually for my scanner, even voice channels, non trunked, are skipped also.

Regards,
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Old 10-10-2017, 3:52 PM
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The TRX series doesn't use the control channel for trunking. They scan the voice channels, as I understand it.
This is probably true for DMR and NXDN but not for P25, Motorola, EDACS, etc.
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Old 10-10-2017, 3:54 PM
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Originally Posted by CqDx View Post
Thanks,actually for my scanner, even voice channels, non trunked, are skipped also.

Regards,
Just curious - do you have any of the digital modes checked/selected in limit search? If so, it will only unmute on the voice types checked.
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Old 10-10-2017, 5:18 PM
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This is probably true for DMR and NXDN but not for P25, Motorola, EDACS, etc.
Ah, yes true. I only the TRX for DMR/NXDN so I forget about the others.
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Old 10-10-2017, 7:37 PM
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Here is a video of how deaf my TRX-1 is, the PSR-800 has the RS 800 MHz antenna, and the TRX-1 has the RH77CA antenna. The TRX-1 has squelch all the way down, whereas the PSR-800 has normal squelch.

https://youtu.be/PzB_VETTfNY

Here is another video that shows the TRX-1 skips right over the analog channels during limit scan.

https://youtu.be/1tQZNfPk56U

Has anyone experienced something to mine?
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Old 10-10-2017, 10:34 PM
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Yes. I have several times. I don’t know what causes it but the numbers in the ZM settings change for no reason. Go into program menu. Then go to global settings. Hit the up arrow on the keypad till you see the ZM settings. Go into each one and make sure the number that’s in it is within the range that is specified. When they are all changed correctly it should start working again. It won’t fix the control channel problem but it will fix missing transmissions on analog and dmr.
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Old 10-12-2017, 8:12 PM
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Thanks, it seems the zeromatic settings helped the speed of the search and convergence of a frequency. Strangely, I noticed the problem seems to be only affecting limit search and tune mode. In service mode the symptom seems to be less severe.
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Old 10-12-2017, 8:36 PM
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Trx has a setting if u select nxdn DMR p25 or any digital option checked off in setting to search.. Then it skips all analog and only stops on digital signals


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