NXDN in DFW

[KI5IRE]

I purchased the NXDN upgrade today for my 436.

I am showing NX9 on the Southwestern Regional Communications Center, but have yet to hear anything on that system or the Azle NXDN or Self Radio NXDN systems. Not sure if I didn't set them up correctly or they are just quiet.

I was also wondering if anyone knows of any NXDN systems that aren't in the database in this area that are interesting to listen to. I heard BNSF is on a NXDN system but cannot find anything about it.

 

[nd5y]

I heard BNSF is on a NXDN system but cannot find anything about it.

The railroads added NXDN emission designators to their licenses when they narrowbanded them. They could be using it on any channel.

The db shows one simplex NXDN channel in Ft Worth.
https://www.radioreference.com/apps/db/?aid=1692

 

[jason51]

Lancaster fire is NXDN

 

[UPMan]

The Southwest Regional system is pretty busy. Several agencies on there, including Cedar Hill. Make sure you programmed the LCNs for each frequency (only Cedar Hill has the LCNs in RRDB...for the other sites you'd need to run LCN finder).

 

[KI5IRE]

The Southwest Regional system is pretty busy. Several agencies on there, including Cedar Hill. Make sure you programmed the LCNs for each frequency (only Cedar Hill has the LCNs in RRDB...for the other sites you'd need to run LCN finder).

How do I use LCN finder? I did not set LCNs for any sites and did not set RANs, just set RANs on search.


Sent from my iPhone using Tapatalk

 

[hiegtx]

The Southwest Regional system is pretty busy. Several agencies on there, including Cedar Hill. Make sure you programmed the LCNs for each frequency (only Cedar Hill has the LCNs in RRDB...for the other sites you'd need to run LCN finder).

Both SWRCC & Lancaster are working very well for me on my 536HP and one of my 436HPs. Going to update the second one later tonite.

 

[UPMan]

ANALYZE --> LCN Finder

 

[paulb]

Are the LCN’s 4XX for Cedar Hill?

 

[UPMan]

I think so. They are in the dB, here (click on the site link).

 

[hiegtx]

I think so. They are in the dB, here (click on the site link).

The Duncanville site appears to be down at the moment. Not getting a signal on system status, and LCD finder won't run. It's been up and down several times today. Not seeing transmissions from that site on my TRX-1 either at the minute.

 

[Russell]

The Duncanville site appears to be down at the moment. Not getting a signal on system status, and LCD finder won't run. It's been up and down several times today. Not seeing transmissions from that site on my TRX-1 either at the minute.

So what does Duncanville do when their system is down? Revert to analog on their UHF channels? If so, which channels, what PL/DPL do they use? If not, semaphore, smoke signals? Just curious.

Thanks,
Russell

 

[UPMan]

There are two other sites on that system. They can probably hit Cedar Hill (since I can hit it from north of DFW airport).

 

[hiegtx]

So what does Duncanville do when their system is down? Revert to analog on their UHF channels? If so, which channels, what PL/DPL do they use? If not, semaphore, smoke signals? Just curious.

Thanks,
Russell

There are two other sites on that system. They can probably hit Cedar Hill (since I can hit it from north of DFW airport).

That's what I was seeing yesterday. Duncanville calls coming across the Desoto or Cedar Hill sites.

The Duncanville site is back up today, at least for now. I've tried to run the LCN finder on it, but only getting three frequencies to fall in place. That's also as far as I got with LCN finder Monday night, after I upgraded one scanner & manually created the system.For Desoto, even though I ran LCN on it from late afternoon until almost midnight, I never got more than four of the five to identify. Tried again this morning, been running the LCN finder since about 9am, and still only 4 out of five.

For the Lancaster system, LCN finder identified all five. But, surprisingly, instead of the three digit channel #s I see on the SWRCC sites, the LCNs on Lancaster are single digit. Lancaster is a NXDN 4800 system, not 9600 like SWRCC. I've edited both systems into a NXDN Favorites list, and assigned the correct service types. It's working well in the three scanners I updated to NXDN.

When I first started monitoring these NXDN systems using my TRX-1, I was seeing a lot of off the wall talkgroup ID's that were all over the place as far as ID numbers. Now, on the x36HP scanners, I am seeing valid TGIDs not random ones. ID Search is on for both systems. I am logging activity on the 536 via ProScan.

 

[UPMan]

Very possible that they still are running on only 3 repeaters and don't have all freq's active, yet.

 

[KevinC]

The Duncanville site is back up today, at least for now. I've tried to run the LCN finder on it, but only getting three frequencies to fall in place. That's also as far as I got with LCN finder Monday night, after I upgraded one scanner & manually created the system.For Desoto, even though I ran LCN on it from late afternoon until almost midnight, I never got more than four of the five to identify. Tried again this morning, been running the LCN finder since about 9am, and still only 4 out of five.

Just a guess, but maybe the channel that the callsign is on is only assigned a call if all other channels are busy (this is how Motorola trunking works). Just a guess as I have zero NXDN experience.

 

[hiegtx]

Just a guess, but maybe the channel that the callsign is on is only assigned a call if all other channels are busy (this is how Motorola trunking works). Just a guess as I have zero NXDN experience.

Kevin,

You may be correct on that. I let the Desoto site run almost all day yesterday, never did nail the fifth channel. The system is not that busy. Five frequencies for each site (one in each member city) is overkill for the amount of public safety radio traffic they have. Mesquite, much larger than all three cities combined, only had 5 frequencies on their old Moto Type II system.

 

[KevinC]

Kevin,

You may be correct on that. I let the Desoto site run almost all day yesterday, never did nail the fifth channel. The system is not that busy. Five frequencies for each site (one in each member city) is overkill for the amount of public safety radio traffic they have. Mesquite, much larger than all three cities combined, only had 5 frequencies on their old Moto Type II system.

Maybe put the suspected fifth channel in conventionally and sit on it and listen for a callsign.

 

[KI5IRE]

That's what I was seeing yesterday. Duncanville calls coming across the Desoto or Cedar Hill sites.

The Duncanville site is back up today, at least for now. I've tried to run the LCN finder on it, but only getting three frequencies to fall in place. That's also as far as I got with LCN finder Monday night, after I upgraded one scanner & manually created the system.For Desoto, even though I ran LCN on it from late afternoon until almost midnight, I never got more than four of the five to identify. Tried again this morning, been running the LCN finder since about 9am, and still only 4 out of five.

For the Lancaster system, LCN finder identified all five. But, surprisingly, instead of the three digit channel #s I see on the SWRCC sites, the LCNs on Lancaster are single digit. Lancaster is a NXDN 4800 system, not 9600 like SWRCC. I've edited both systems into a NXDN Favorites list, and assigned the correct service types. It's working well in the three scanners I updated to NXDN.

When I first started monitoring these NXDN systems using my TRX-1, I was seeing a lot of off the wall talkgroup ID's that were all over the place as far as ID numbers. Now, on the x36HP scanners, I am seeing valid TGIDs not random ones. ID Search is on for both systems. I am logging activity on the 536 via ProScan.

Whats the LCNs for Lancaster?

 

[hiegtx]

Whats the LCNs for Lancaster?

453.281200 1
453.531200 2
453.743700 3
460.056200 4
460.343700 5

RAN=1

FIRE DISPATCH 12100
FIREGROUND 12600

PD DISPATCH 11100
PD SECONDARY 11600

TGID's 11200, 11300, 11400 are popping up as 'PD talk' usage, especially 11400.

 

[hiegtx]

Whats the LCNs for Lancaster?

The single digits, 1-2-3-4-5, is what LCN finder gave me. Fo the SWRCC system, the channel #s are 3 digit.