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What type of trunking is this?

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UncleSLAM

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Can anyone tell me what type of trunking system this is? Or at least point me in the right direction.
http://wireless2.fcc.gov/UlsApp/UlsSearch/licenseFreqSum.jsp?licKey=1113640
I hear talk on a few of the frequencies, but I don't hear any kind of control channel. On 853.0375, there is a constant hiss noise. Is this the control channel? It is not a loud grinding noise like I hear on the Motorola II system that I monitor. I entered all the frequencies in as a Mot Type II, and set the scanner in search mode, but it never stops on anything. If I set the scanner to manual, I can hear people on some of the frequencies.
 
INDY72

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Do you hear any key up sounds with no voice on repeaters.. As in a regular pattern? Like every ten or so seconds? Or every 2 or so seconds?
 
UncleSLAM

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I don't hear anything unless someone is talking, and the hiss on the one frequency.
 
INDY72

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What state/county is this system in?
 
INDY72

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Just a wild guess... But could be LTR Multinet???? Or MPT trunking??? This is an SMR so its not likely OpenSky, or TETRA, since thats not used in the USA much at all.. And youd know if it was any of the usual M/A-Com or Motorola types already.

If you have a scanner that is run to a data slicer with LTRDump/LTRTrunk on a PC you would be able to tell if its LTR Multinet simply eneough. As to MPT.. I am not sure how to determine that. I do know that no scanner made currently will trunk track iether of those formats.

Since you are confirming its active, submit it for the county and the admins can add it.
 
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I don't think it would be MPT-1327. Its control channel is a continuous data stream, sort of soft jangling sound.

How strong is the carrier i.e. it is hissy because of low signal strength at your end? If it's a solid carrier, most likely LTR Multi-Net the Milf suggested...

Dave
 
UncleSLAM

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Yeah, the signal is crytal clear. The hiss on the one frequency is very soft, not loud at all.
 
INDY72

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Then you have to monitor it conventionally unless you have the aforementioned data sliced system running LTRDump/LTRTrunk on a PC.

Submit the data for it to the admins and they can add it as an LTR Multinet TRS.
 
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