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Trunking Control Channel Decoding For discussion of installation, setup, configuration, and use of the Trunker / Unitrunker digital decoding utilities (for decoding Trunking control channels)

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Old 02-13-2013, 12:44 AM
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Default Another LTR Untrunker thread

I have gone back to read some LTR threads on here. I found that my UT setup seems to act a bit differently.

I have found an LTR channel that has a constant data stream- and the first time I parked on that channel in tune mode (PRO-106 scanner, btw) and the new system window popped up. The control channel populated with the frequency. It also populated 8 different other LCN slots with 0.000 frequencies. I monitored this system late at night, when it was unlikely to be active. Will the other 8 slots get populated if the system is active? I don't know a whole lot about LTR, but I understand having a dedicated control channel is uncommon.

I found the frequencies off FCC license database, and have not attempted to put them all into order yet. I guess that would be a question for a different forum.
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Old 02-13-2013, 1:00 AM
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Quote:
Originally Posted by asurnin View Post
Will the other 8 slots get populated if the system is active? I don't know a whole lot about LTR, but I understand having a dedicated control channel is uncommon.
There is nothing in the home channel bursts to reveal frequency. LTR is much like EDACS in this respect.

This may be a mixed LTR / Passport system. The PRO106 would be deaf to the Passport data.
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Old 02-14-2013, 3:35 AM
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Originally Posted by asurnin View Post
I have found an LTR channel that has a constant data stream- and the first time I parked on that channel in tune mode (PRO-106 scanner, btw) and the new system window popped up. The control channel populated with the frequency. It also populated 8 different other LCN slots with 0.000 frequencies. I monitored this system late at night, when it was unlikely to be active. Will the other 8 slots get populated if the system is active? I don't know a whole lot about LTR, but I understand having a dedicated control channel is uncommon.
LTR-Net systems have a Home Status Channel that transmits continuously, but I've never tried UT against any of the systems here in NY to see how it responds.

If it is LTR-Net, LTR-Analyzer v3.0 will decode and tell you all of the LCN frequencies and site info.
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Old 02-14-2013, 3:21 PM
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Default Another LTR Untrunker thread

I'll look into the analyzer, thanks guys.
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Old 02-15-2013, 9:17 AM
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AFAIK Unitrunker cannot track any LTR other than regular (no "control" or "home" channel).

If this has changed, it would be excellent news!
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