Did a little more trouble shooting: it's only TDMA and it's only this site; adjacent sites have no issues with talkgroups operating in TDMA mode. Thoughts?
New Jersey Interoperability Communication System (NJICS)
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Did a little more trouble shooting: it's only TDMA and it's only this site; adjacent sites have no issues with talkgroups operating in TDMA mode. Thoughts?
Is it only one frequency (repeater) having issues, or is it affecting all TDMA calls at that site?
Martinsville and Walpack share the exact same frequencies. It's possible, although perhaps unlikely, that you're pulling in some of the signal from Walpack and it's just enough to disrupt the critical timing needed for TDMA transmissions.
Are you using an outdoor or high gain antenna? If so, what happens when you switch to something like a rubber ducky to isolate the signal to just that site? Also, does enabling attenuation on that site help anyway? Sometimes less is more, depending on how near to the site you are.
Martinsville and Walpack share the exact same frequencies. It's possible, although perhaps unlikely, that you're pulling in some of the signal from Walpack and it's just enough to disrupt the critical timing needed for TDMA transmissions.
Are you using an outdoor or high gain antenna? If so, what happens when you switch to something like a rubber ducky to isolate the signal to just that site? Also, does enabling attenuation on that site help anyway? Sometimes less is more, depending on how near to the site you are.
It is all TDMA calls off of that site; I've never had an issue with it before. I've tried moving the antenna (it is outdoor), as well as taking my portable around the area. All attempts to get a TDMA voice transmission to decode have, thus far, failed on 3 devices. So that makes me thing something is wrong with the site.
Yeah I agree, ruling out an issue with just a single repeater at the site, as well as going mobile with a portable, pretty much rules out interference from a distant site and/or localized interference. This only started recently?
I noticed over the past few days; a week at most.
Haha, if only they had a site where I could submit a support ticket! But yeah, the scanner is in Somerville and it picks up all the TDMA from Somerset County perfectly fine; but any TDMA off NJICS-Martinsville: forget it.
Have any recommendations as to how to force my scanners to decode the TDMA voice transmissions? Both my 996P2 and 436HP are getting absolutely nothing in Phase 2 off of Martinsville still, but field units' radios seem to be working (for the most part).
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I have never decoded Martinville well and I am just a few mikes to the east down the valley.
I believe the site is on the West ridge not the east ridge.
Somerset County is on both Miller Lane (the east ridge) and the courthouse I believe. You can't compare them to NJICS.
I suspect you are getting multipath. There is plenty of terrain between Somerville and Martinsville if it is in fact on the west ridge.
lindenscanner
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Question About Toll Road Operations and NJICS
I monitor the Union County and West Orange sites from my home in Union County. I find it very odd that I only very rarely hear GSP North or Central transmissions or NJ Tpke North transmissions. I get 10-Comm Marine transmissions off the Union County site from all over the State. I get all the NJDEP Park Police and Fish & Wildlife from the Union County site.I get all the Safety Patrols and DOT stuff as well. I get occasional hits from the NJ Tpke Central patrols on the Union County site but I am wondering why I don't get regular Parkway North or NJ Turnpike North transmissions off the Union County or West Orange sites.
I monitor the Union County and West Orange sites from my home in Union County. I find it very odd that I only very rarely hear GSP North or Central transmissions or NJ Tpke North transmissions. I get 10-Comm Marine transmissions off the Union County site from all over the State. I get all the NJDEP Park Police and Fish & Wildlife from the Union County site.I get all the Safety Patrols and DOT stuff as well. I get occasional hits from the NJ Tpke Central patrols on the Union County site but I am wondering why I don't get regular Parkway North or NJ Turnpike North transmissions off the Union County or West Orange sites.
Simple version? It's not you. Like some other NJICS groups, they're not patched/linked/simulcasted full-time. Only when a user on the NJICS side utilizes/activates it.
BCD436HP- new user
I am trying to setup a FL for NJSP. Having trouble and cannot hear anything on my new scanner. Is there a specific setting I need to hear the new NJ systems on P25?
I am trying to setup a FL for NJSP. Having trouble and cannot hear anything on my new scanner. Is there a specific setting I need to hear the new NJ systems on P25?
Click on the link in my signature below & download the ZIP file at that link.
Unzip the file & take the 'New Jersey' HPE file in there and use Sentinel to import that into your own favorite list. The main sites of the NJSP and NJICS are both fully set up.
Be warned, the NJICS listings for the NJSP operations should not be considered as a replacement for the NJSP 800MHz system. They are not active 100% of the time & are not heard on all sites.
Unzip the file & take the 'New Jersey' HPE file in there and use Sentinel to import that into your own favorite list. The main sites of the NJSP and NJICS are both fully set up.
Be warned, the NJICS listings for the NJSP operations should not be considered as a replacement for the NJSP 800MHz system. They are not active 100% of the time & are not heard on all sites.
Thank you, Scott.
You're welcome! I literally just uploaded an updated file set, so make sure you grab the latest copy.
So I believe I identified the issue as to why this is happening. Using UniTrunker, I monitored the Martinsville site for CC activity. For some reason, even with Phase 2 / TDMA channels, the system is broadcasting the talkgroup as Phase 1 / FDMA. I took the time to monitor other P25 NJICS sites and other P25 systems; this issue appears to be unique to the Martinsville site. That might explain why the scanner refuses to decode it; it might be trying to decode using Phase 1 algorithms because that's what the system is telling it to do.
Some quick captures here: NJICS UniTrunker - Album on Imgur
Might have to draft a message to UPMan......
Before you come to any conclusions, you should first install the latest release of Unitrunker v1, which is 1.0.33.6. You are running an older version, which could have bugs related to voice following, causing TDMA calls to be sent to the voice receiver.
Index of /download/preview
Also, do not set the analog output (Audio Output) to the same output as the digital output. Set the Audio Output to Unspecified instead of the same VAC used for the digital output.
Don't assume that this is an issue with the site as opposed to a buggy version of Unitrunker. That needs to be ruled out first.
Same issue, even on the newest preview of Unitrunker: only Martinsville continues to push all P2 voice channels as P1; Rutgers, West Orange, and Hunderdon do not display this pattern whatsoever.
Furthermore, this pattern does not emerge on the other P25 systems I tracked (Somerset Co., Middlesex Co., Sayreville).
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