UTA DMR Tier 3 System

KI5IRE

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I am trying to identify the UTA DMR Tier 3 system, WPWD447.

So far, I've found the control channel to be 461.3875 and have identified 2 LSNs for this system, 461.9875 (321/322) and 463.8625 (621/622). I cannot find any frequency for the 3rd and 4th LSN for this system (561/562). All frequencies I've found so far are using CC1.

I have been able to confirm the information I have found so far based off of TGIDs and UIDs corresponding from the control channel data for TG grants etc. and the system partially decoding properly in SDRTrunk.

I have scanned all the licensed frequencies for this license including ones that aren't labeled for FB and have not found any of them to pop up when LSNs 561 and 562 are active.

Anyone been able to identify this last one?

All of the talkgroups I've found so far appear to be maintenance and custodial operations.
 

KI5IRE

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463.4875 would equal LSN 561/562 based on the others you figured out. Download the latest DMR TIII LSN & LCN frequency calculator in the posting here
Interesting. I've been scanning that frequency and have found no activity on it..

Thank you for linking that calculator, that is a huge help! Saw some other threads saying it isn't possible to calculate LSN/LCN for Con+ or Tier III systems.
 

KI5IRE

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How close are you to the site? Station output is pretty low (10W) so you'd need to be relatively close to the campus for a reliable pick up on all freqs
I'm approximately 10 miles from the site, but receiving the system at RSSI -60. The talkgroups I am able to hear are coming in extremely clear. Every other frequency that I've confirmed is clear as well.
 

mwjones

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I did most of the decoding of the UTA Hytera system back in November 2021, just never had the time to submit it:

Code:
LCN    LSN       Freq         Color Code
112    225/226   461.38750    1
160    321/322   461.98750    1
280    561/562   463.48750    1
310    621/622   463.86250    1
370    741/742   464.61250    1

Haven't identified any talkgroups for it though, but there are quite a few.

On most TIII systems, the LCN/LSN are from lowest to highest, and there is a bandplan to calculate it. In this case, using an RF Spacing of 12.5 KHz will give you the correct assignments (12.5 KHz is the most common, but I've seen a few that use 6.25 KHz). You can download a handy LCN/LSN calculator from this message (that's the most recent version, but explore the whole thread for more details)
 
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