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  #1 (permalink)  
Old 01-16-2013, 2:17 PM
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Default Wethersfield Open Carrier Problem

I have been getting an open type carrier noise when monitoring the town of Wethersfield trunking system. It is happening on both my 396XT and BCT15X and it could be different control channels. It has been going on for about 2 wks. It affects monitoring other systems and groups.
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Old 01-16-2013, 2:35 PM
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Default Weth.

Quote:
Originally Posted by whsesupv View Post
I have been getting an open type carrier noise when monitoring the town of Wethersfield trunking system. It is happening on both my 396XT and BCT15X and it could be different control channels. It has been going on for about 2 wks. It affects monitoring other systems and groups.
No problems in Cromwell on 396XT or 996XT.

853.7875 is active CC right now.

Did you re-program for re-banding?
Scanner programmed "Control Channel Only"?
Have you tried changing the IF? HOLD->FUNC-> 4
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Old 01-16-2013, 3:24 PM
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Default Carrier

Yes! Hearing it now. Locked up on 853.075/Patrol.

I may be able to get an answer for you tomorrow.
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Old 01-19-2013, 7:23 PM
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It is very frustrating and if I disable the police group out i can monitor everything in Wethersfield and other systems ok.
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Old 01-19-2013, 8:43 PM
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Originally Posted by whsesupv View Post
It is very frustrating and if I disable the police group out i can monitor everything in Wethersfield and other systems ok.
Yes this is still happening and they are likely not aware of it yet. I mentioned it to a friend who works there. They did have a problem with a defective lapel mike, but this is not that. The Officer who is in charge of their radios is out of town.

They've had some other other issues with their Minitors not resetting the squelch after narrowbanding, Randomly. They have used a Spectrum Analyzer and determined that the ambient RF "floor" is elevated in some areas for some unknown reason.

853.075 is an alternate CC, and seems to hang the most. If you hit SCAN, it will resume scanning.

Still checking.
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Old 01-19-2013, 9:46 PM
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Try making sure you have detect end code turned on. This will switch the scanner back to the control channel based on "end tx data" sent from the subscriber unit, the scanner will not wait for the carrier to drop before returning.
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Old 01-20-2013, 9:45 PM
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Originally Posted by ems170 View Post
Try making sure you have detect end code turned on. This will switch the scanner back to the control channel based on "end tx data" sent from the subscriber unit, the scanner will not wait for the carrier to drop before returning.
I think this helped - so thanks!

It solves the issue on the receiving side, but not on the repeater side. Repeater still stays keyed up.

I enabled end code and status bit and it seems to move on now, though the carrier remains.
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Old 01-24-2013, 7:20 PM
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ems170,
Thanks. That fixed the problem I've been having with CSP.
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Old 01-25-2013, 1:47 PM
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Thanks you guys for the help I put detect end code to on mode. seems to work OK
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Old 01-25-2013, 8:58 PM
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Glad it worked for all of you. DR you probably don't want to enable status bits, as you will not hear the channel any time a status bit is used i.e. patches, emergency activations, etc.
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Old 01-25-2013, 9:09 PM
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Quote:
Originally Posted by ems170 View Post
Glad it worked for all of you. DR you probably don't want to enable status bits, as you will not hear the channel any time a status bit is used i.e. patches, emergency activations, etc.
Duly noted. If I find out more about why the freq. (853.075) is hanging, I'll advise.

As of now - they are still in denial.

Thank you, Sir!
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Old 01-29-2013, 8:13 AM
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Sometimes the radio service puts one of the channels like that to screw with scanner listeners.
a major trunking system in the state has done it in the past and loves to watch people freak out on here.
The people using the system don't see it don't hear it and don't care.

This is also done to do coverage testing sometimes after rebanding, but not normaly in a trunking system as they can use the control channel.

This and the story about the idiot scanner listener who called in about hearing the lojack signal in his car on the scanner and wanted the police to respond are the best stories that go arround the PD dispatch centers
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