New TxWARN sites poss Williamson or Travis Co DPS

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rbarker

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I am hearing the following 3 control channels that all ID on this system. They appear to possibly be in Travis or Williamson Co. I am hearing DPS Houston, Bryan, Pierce, and Texas City talkgroups on them.

765.90625c ID 1A0 for all of these
765.909375c ID 1A0
774.296875c ID 1A0

I found them searching with my GRE PSR-500 so the frequencies may round
 

KevinC

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I am hearing the following 3 control channels that all ID on this system. They appear to possibly be in Travis or Williamson Co. I am hearing DPS Houston, Bryan, Pierce, and Texas City talkgroups on them.

765.90625c ID 1A0 for all of these
765.909375c ID 1A0
774.296875c ID 1A0

I found them searching with my GRE PSR-500 so the frequencies may round

The 765 frequencies are in the broadband allocation. I suspect these are images from elsewhere in the spectrum
 

Project25_MASTR

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Put a control channel decoder such as Pro96Com or Unitrunker on and it'll tell you the active and alternate control channels as well as the adjacent sites. You can then look up the location via the FCC database once you know the advertised channels.


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nd5y

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There is a good band opening at least in north TX this morning. Keep an eye on those and see if you can still hear them for several days. Check late in the afternoon if possible. They might be further away than you think.

If you are using a GRE then they could be images from 800 MHz too.

If you have Unitrunker or Pro96Com you can make a note of ALL of the info reported, not just the system ID, and then search 769-775 and 851-861 MHz and see if you find another cc that displays the same thing. That will tell you if it was an image or real.
 
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nd5y

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The 765 frequencies are in the broadband allocation. I suspect these are images from elsewhere in the spectrum
In Austin there is at least one other P25 site that is below 769 MHz in the broadband allocation so there is a chance that it's not an image.
 

Project25_MASTR

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In Austin there is at least one other P25 site that is below 769 MHz in the broadband allocation so there is a chance that it's not an image.



There are only 3 700 MHz sites on GATRRS currently. The Caldwell county sites (one is iron mountain and I can’t remember the other) and DPS’s Capitol site. I’ve never tried to decode any of those control channels though.


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KevinC

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In Austin there is at least one other P25 site that is below 769 MHz in the broadband allocation so there is a chance that it's not an image.

I highly suspect that information is incorrect as well.
 

KevinC

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I'm pretty sure a PSR-500 will show the site number if you park on a control channel.
 

KevinC

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Here's my guess...

774.29375 (you have 774.296875) is the true site 96 control channel, The 765's are images of that.
 

Project25_MASTR

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770.66875
770.20625
769.91875
774.49375
772.23125
771.15625
770.33125
764.46875
765.93125
765.21875
765.68125
765.96875

Those should respectively be for Iron Mountain, Lockhart and DPS Capitol sites. Those are the 700 control channels in a good amount of existing subscribers (came from an XTS5000 that is on the system).

Please keep in mind, these radios are capable of adapting to system changes as the control channel list is just a list of channels the radio initially scans for. It can roam to adjacent sites based on the information output by the control channel.
 
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nd5y

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I downloaded and running Pro96Comm what do you need me to tell you?
I haven't used Pro96Comm so I don't know exactly how it works, if it needs to be configured, or what information it can display.

For identifiying new P25 trunked sites or systems to be submitted to the db you should have:
WACN
System ID
RFSS
Site number
Site neighbors
Site NAC
Primary control channel freq
Alternate control channel freqs
All of the voice channel freqs
Whether or not the band plan or voice channels shows phase I or II
FCC callsign(s) of each site.
 
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Russell

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WACN BEE00 SysID 1A7 Site 96 NAC 1A0 774.29375c

Just like the DB says. Good signal on I35 north,

I only have one radio this trip and no tools. I might do better after Christmas.
 
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KevinC

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Ok, so no new site then.
 
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