City of Dallas 700 MHz P25 TRS

[Thunderbolt]

I see that the city of Dallas, has applied to the FCC, for a 700 MHz Project 25 TRS. Will this be a separate system, or part of the multi-county overlay network?

Application 1

Application 2


Yours truly,

Ron

 

[BenScan]

From what I've heard, the first one is the city's, and the second is the overlay.
Ben

 

[redhelmet13]

Looks like one will be the city of Dallas' beginning of a bigger citywide system. Two will be part of the overlay for the 4 cvounty interop. (According to the attachments in the applications).

 

[Russell]

The frequenices in Application 1 match the frequencies being tested at Station 12 and add sites in North Dallas and Downtown

Dallas (Project 25) Trunking System, Dallas, Texas - Scanner Frequencies

The frequencies in Application 2 match the frequencies requested for the NCTCOG Overlay

NCTCOG P25 Regional Overlay Trunking System, Dallas/Fort Worth, Texas - Scanner Frequencies

 

[redhelmet13]

Radio techs testing today. They have an ISSI link to the DFW Airport 700 mhz system up and they can talk across the sites now. Some encryption has been used.

 

[BenScan]

Radio techs testing today. They have an ISSI link to the DFW Airport 700 mhz system up and they can talk across the sites now. Some encryption has been used.

More today. They're testing the ISSI between Harris(at DFW)/Motorola(at Dallas) equipment.

Talkgroups heard on Dallas
Alpha 60020
Bravo 60022
Charlie 60023
Deltra 60024
Not sure I have those correct.

Talkgroups heard on Texas/DFW/Tarrant side
Alpha 51000
Bravo 51001
Charlie 51002
Delta 51003

 

[nd5y]

That looks like the talkgroup descriptions in this document: http://www.nctcog.org/cs/radio/pdf/TalkgroupsJBaron.pdf

 

[redhelmet13]

I have been running Pro96com on the DFW system while at work... Sounds like they are almost through initial testing... I have only seen 4 freqs active... Initially I saw 6 which makes me wonder about the 2 now dormant freqs.

 

[scanben]

After today's monitoring I think the lineup is as follows.

Dallas Site
Test Group 60020
Alpha 60021
Bravo 60022
Charlie 60023
Delta 60024

Tarrant Site
Test Group 51000
Alpha 51001
Bravo 51002
Charlie 51003
Delta 51004

More today. They're testing the ISSI between Harris(at DFW)/Motorola(at Dallas) equipment.

Talkgroups heard on Dallas
Alpha 60020
Bravo 60022
Charlie 60023
Deltra 60024
Not sure I have those correct.

Talkgroups heard on Texas/DFW/Tarrant side
Alpha 51000
Bravo 51001
Charlie 51002
Delta 51003

 

[Cynergyze]

ISSI Test TGs

I can help clarify ISSI test TGs. I'll mention this is the first ISSI link of its kind to ever go live, it came up around 9am Wednesday morning.

Final ISSI pre-testing is happening now in preparation for a full and formal test Monday 7/19 between 1-4. You'll hear some interesting traffic during those hours. We're doing a battery of tests, including pulling the link to simulate a backhoe fade.

There are the 5 pairs of talkgroups (I just saw someone already corrected, here are loaded names, anyway
51000-60020 -NCTESTA
51001-60021 NCTRG-A
51002-60022 NCTRG-B
51003-60023 NCTRG-C
51004-60024 NCTRG-D

TESTA is a test talkgroup only, obviously, other four are being tested to validate ISSI deployment but will be moved to (4) new NCTCOG RF sites this fall.

I'll be running the tests, maybe I'll shout out to y'all ;-)
Cynthia

 

[BenScan]

Cool. Thanks for the info.

Ben

I can help clarify ISSI test TGs. I'll mention this is the first ISSI link of its kind to ever go live, it came up around 9am Wednesday morning.

Final ISSI pre-testing is happening now in preparation for a full and formal test Monday 7/19 between 1-4. You'll hear some interesting traffic during those hours. We're doing a battery of tests, including pulling the link to simulate a backhoe fade.

There are the 5 pairs of talkgroups (I just saw someone already corrected, here are loaded names, anyway
51000-60020 -NCTESTA
51001-60021 NCTRG-A
51002-60022 NCTRG-B
51003-60023 NCTRG-C
51004-60024 NCTRG-D

TESTA is a test talkgroup only, obviously, other four are being tested to validate ISSI deployment but will be moved to (4) new NCTCOG RF sites this fall.

I'll be running the tests, maybe I'll shout out to y'all ;-)
Cynthia

 

[redhelmet13]

I will be listening and watching (Pro96com). BTW... the DFW site sounds good from just east of Six Flags.

 

[hiegtx]

Getting some test counts on id's 60020 & 60022, from the Dallas P25 "Florina" site, which was not, supposedly directly part of the overlay play. Not picking up a control channel right now from the other Dallas site. That should be "Dawson ST.", just east of Downtown. I'm well within range, maybe 6 miles max. Nothing on the 396XT or PSR500, roof antenna or R/S 800Mhz antenna.

 

[BenScan]

Testing in progress now. For those with scanners that show radio IDs, the radio ID will show up on the system on which the radio is transmitting, but if you're listening to the other site (linked via ISSI), then the TG ID shows up as the Radio ID. For example, if a radio keys upon on the Tarrant side on talkgroup NCTRG-D1/50024 with a radio i1234, on the Dallas side, you will see Radio ID i60024 active, since the talkgroup being linked is NCTRG-D2/60024. At least that's how it's working on th Uniden XTs.

 

[nd5y]

Article in Radio Resource Magazine
Dallas Tests First Commercial P25 ISSI System
Radio Resource Magazine: OnlyOnline

 

[Russell]

And, finally, the Denton County site application. All the DFW Overlay applications are in pending status.

ULS Application - Trunked Public Safety 700 MHz - 0004331676 - DENTON, COUNTY OF

 

[BenScan]

Here's an interesing video regarding some of the new tech in the area.
APCO TV :: Home

 

[dpdsgt]

I watched the Harris video, the handheld shown looks soooo nice! I assume that dallas pd and fire will have to issue new radios to get this on line. Our xts 2500 won't do the job. So with these new radios I wonder if I work in dallas, can I just switch channels and monitor say dfw or arlington pd??or is more complicated than that?? if we just had to flip channels it would be awesome for chases! so damn tired of the phone call relay game!

 

[redhelmet13]

Well, If they get radios that are 700 and 800 capable and they have agreements from the cities you mentioned and your higher ups approve and the radio shop is willing to program the systems in and.... Well you see where I am going. Short answer is yes with stipulations.

 

[nd5y]

NCTCOG meeting notes 8/25/10

NCTCOG meeting notes 8/25/10
http://www.nctcog.org/cs/radio/pdf/GeneralSlides082510.pdf