Needing More Help with Identifying the Talkgroups for UCA p25 700mhz

PMJ2kx

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Remember, the list is a work in progress. There are a lot of Talk Groups that haven't been heard or Identified as of yet. It is gonna take time. For example, 3701 and 3702 are (I think) UTA PD (fare violators), and 2897 is U 0f U PD-Traffic Control.
I can confirm 3701 & 2 - radio aliases showing 54A and dispatch consoles are 944000x and show "UTA-DISP"
 

gldavis

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Not sure where you get "radio aliases" (I gotta look that up), but SDS displays are showing UID's of 8410xxx.
 

k27

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Remember, the list is a work in progress. There are a lot of Talk Groups that haven't been heard or Identified as of yet. It is gonna take time. For example, 3701 and 3702 are (I think) UTA PD (fare violators), and 2897 is U 0f U PD-Traffic Control.
They are in the database already. Is there something you think is missing?

View attachment 174896
I programmed those Freqs.
What areas would be considered East and West?
I’m only hearing east dispatch I’m not sure if it’s skipping over west but even when I monitor west only I have no audio at all.

0 issue with picking up east , I’m in Weber county loud and clear on Nelson ( sds100 )
 

PMJ2kx

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Not sure where you get "radio aliases" (I gotta look that up), but SDS displays are showing UID's of 8410xxx.
Apparently, Harris radios broadcast their actual radio name or alias with each call / command, and the tool I use (SDR Trunk) is able to decode that in the packet data sent in the control channel. This makes it easier to help decipher talkgroups and who they belong to, as well as determining radio ID ranges.

Screenshot for example - the "From" column shows what's actually sent with the data in the control channel stream. Sometimes the labels are NOT correct due to issues decoding, computer performance, or in the odd instance when a city installed a radio meant for one thing in another vehicle (American Fork Fire's radio in their Medic Ambulance 51 comes up as "CHIEF-51-M" as an example). So you do still have to still do the good ol' detective work of listening to confirm - this just helps the process.

And to your point about UTA...yes, RIDs in the 0841xxxx range are mobiles and portables for field units.

In this case, you can actually see on the third line down showing the RID of 08410179,54A-NIELSON-P (you can ignore the 92527.00A part...I forget what this specifically means, but it's something to do with the system in general). So you get the RID, and the label / name / alias / whatever the "official" vernacular is called of the radio. Sometimes they have the agency ID in there, sometimes it's just a string of numbers like Highway Patrol.
1734903326321.png
 
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PMJ2kx

Curious Onlooker
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I programmed those Freqs.
What areas would be considered East and West?
I’m only hearing east dispatch I’m not sure if it’s skipping over west but even when I monitor west only I have no audio at all.

0 issue with picking up east , I’m in Weber county loud and clear on Nelson ( sds100 )
About only hearing east or west - it is entirely dependent upon if there is a radio affiliated with the talkgroup and said radio is also affiliated to the site you are monitoring.

For example, here in Utah County, we have two primary fire talkgroups: Fire 2 and Fire 3. Without going into too much irrelevant discussion, 2 covers everything north of Lindon and 3 covers everything south of Springville/Mapleton. Most of the time, anybody on the south end of the county is going to be affiliated with West Mountain. I monitor Lake Mountain (Utah Co Simul), so I miss the vast majority of their radio traffic unless a north end radio is sitting on Fire 3 and affiliated with the simul.

Does that make sense?
 
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k27

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About only hearing east or west - it is entirely dependent upon if there is a radio affiliated with the talkgroup and said radio is also affiliated to the site you are monitoring.

For example, here in Utah County, we have two primary fire talkgroups: Fire 2 and Fire 3. Without going into too much irrelevant discussion, 2 covers everything north of Lindon and 3 covers everything south of Springville/Mapleton. Most of the time, anybody on the south end of the county is going to be affiliated with West Mountain. I monitor Lake Mountain (Utah Co Simul), so I miss the vast majority of their radio traffic unless a north end radio is sitting on Fire 3 and affiliated with the simul.

Does that make sense?
Yes that makes sense. Thank you
 

gldavis

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Okay, now I'm upset. I've been using Unitrunker V2 all this time, and it does not show "aliases". I gotta start all over again with SDR Trunk. :oops:
 

PMJ2kx

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Okay, now I'm upset. I've been using Unitrunker V2 all this time, and it does not show "aliases". I gotta start all over again with SDR Trunk. :oops:
Yeah, I've mostly ditched Unitrunker at this point. Kinda frustrated with it myself.

I just wish SDR Trunk had Unitrunker's logging / journaling capabilities. It would be nice not to have to split my logs into 100 MB files just to view them in Excel...
 

Police201

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Is there a Discord where people from UT talk about the new system? If so could I get an invite please?
 

gldavis

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Yeah, I've mostly ditched Unitrunker at this point. Kinda frustrated with it myself.

I just wish SDR Trunk had Unitrunker's logging / journaling capabilities. It would be nice not to have to split my logs into 100 MB files just to view them in Excel...
(unless I'm missing something) I have been running SDRTrunk for several hours now. 2 things, I'm disappointed that I can only watch 1 control channel, and I have yet to see any alias's from the transmitter. (now to figure out how to see what has been collected)
 

enosjones

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dsdplus and sdrtrunk both broadcast the aliases, however since some of the transmission are p25 phase 1 and the control channel is broadcasting the data as phase 1 i use unitrunker along side dsdplus to ID the radios and TGs cuz some isn't showing up. none of the scanners will show the aliases, I wished they did, just dsdplus and sdrtrunk.. regardless with the amount of patch talkgroups (i.e. 63xxx TGs) i use whatever i can get to ID everything.. unitrunker shows all TGs that are patched in rotation where dsdplus only shows 1 TG usually (in my area) the 63xxx TGs rather than the 4 digit TG....
 

gldavis

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My UID list has 1040 UID's, at this time. About 420 have confirmed ID/user names. Roughly another 500 have organizations attached. The rest, I know they exist, but not much more.
 

kf7yn

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5936 UT County Fire 2 came up encrypted this morning. Not sure if they are testing or going to be permanent.
 

PMJ2kx

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5936 UT County Fire 2 came up encrypted this morning. Not sure if they are testing or going to be permanent.
Was this observed using a scanner or SDR? And do you have any logs you can share?

Currently, Fire 2 & Fire 3 are patched together, and it's possible that patch has been used previously on other encrypted talkgroups in the system, which may cause some SDR software to report the supergroup as "secure", but they are currently in the clear and have been all morning as far as I can tell.

1735230746028.png
EDIT: Adding screenshot showing Salt Lake City encrypted and patched next to Utah County Fire 2/3 patched and in the clear
1735231149658.png
 

kf7yn

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Was this observed using a scanner or SDR? And do you have any logs you can share?

Currently, Fire 2 & Fire 3 are patched together, and it's possible that patch has been used previously on other encrypted talkgroups in the system, which may cause some SDR software to report the supergroup as "secure", but they are currently in the clear and have been all morning as far as I can tell.

View attachment 175099
EDIT: Adding screenshot showing Salt Lake City encrypted and patched next to Utah County Fire 2/3 patched and in the clear
View attachment 175100

It came up on my TRX-2 and BCD325P2. I'm not using SDR yet. Sorry no logs
 

k27

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About only hearing east or west - it is entirely dependent upon if there is a radio affiliated with the talkgroup and said radio is also affiliated to the site you are monitoring.

For example, here in Utah County, we have two primary fire talkgroups: Fire 2 and Fire 3. Without going into too much irrelevant discussion, 2 covers everything north of Lindon and 3 covers everything south of Springville/Mapleton. Most of the time, anybody on the south end of the county is going to be affiliated with West Mountain. I monitor Lake Mountain (Utah Co Simul), so I miss the vast majority of their radio traffic unless a north end radio is sitting on Fire 3 and affiliated with the simul.

Does that make sense?

Is it possible that East & West are patched?
Been down in Salt Lake last two days and still only hearing east only… and what area does east and west cover?
 

kf7yn

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Only East is active for all of SL County, not sure when or if they will run separately. It may be an overflow TG if East gets coded or extremely busy, that's my guess.
 
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IcomIcR20

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(unless I'm missing something) I have been running SDRTrunk for several hours now. 2 things, I'm disappointed that I can only watch 1 control channel, and I have yet to see any alias's from the transmitter. (now to figure out how to see what has been collected)
At least for the systems I have monitored, the aliases are not transmitted over the control channel — only the voice channel — so make sure you are monitoring those as well. I have also run into an instance (not on this system) where I decode aliases on one site, but see none on another site on the same system with many of the same TGs present. I checked with both DSD+ and SDRTrunk. Not really sure what to make of that.
 
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