Denver Area NXDN

WX4JCW · Apr 5, 2018

Greetings,

I haven't seen any listings for much NXDN in the Denver area

a cursory search reveals one big player with several sites,

ill submit the info once i can confirm it, sitting in Aurora till saturday

WX4JCW · Apr 5, 2018

First Ste is System 392 Site 2 RAN 2 Looks to be Grazi Communications

CH 182 = 452.262 the control channel

ScannerSK · Apr 5, 2018

I am interested in the following NXDN system:
Telstar Communications

There are a number of mountaintop repeaters so it should be fairly easy to receive.

Shawn

WX4JCW · Apr 5, 2018

ill keep an ear out, have seen one IDAS show up

ScannerSK · Apr 5, 2018

WX4JCW said:
First Ste is System 392 Site 2 RAN 2 Looks to be Grazi Communications

CH 182 = 452.262 the control channel

It appears you are referring to the following system:
Grazi Communications

However, I just realized the Grazi Communications system (on 452.262 MHz) is showing as an LTR type system in RadioReference and not as a NXDN type system.

Shawn

WX4JCW · Apr 5, 2018

yep they switched over, alot of SMR's are doing that

captaincraig44 · Apr 5, 2018

ScannerSK said:
I am interested in the following NXDN system:
Telstar Communications

There are a number of mountaintop repeaters so it should be fairly easy to receive.

Shawn

I've had that system scanning since I bought the upgrade. Zero activity so far that I've found. Great signal strength.

Sent from my Pixel XL using Tapatalk

WX4JCW · Apr 5, 2018

For Grazi there are 2 sites i can hear
452.2625 Site2 CC
and
464.7125 Site 1 CC

GlacierClipper · Apr 5, 2018

captaincraig44 said:
I've had that system scanning since I bought the upgrade. Zero activity so far that I've found. Great signal strength.

Have heard activity on the system but was a few weeks ago. Most of the activity was taking place during the day time.

I don't have any talkgroups or RAN codes for the sytems.

abqscan · Apr 5, 2018

I havn't heard anything on the UHF Grazi NXDN systems, only the VHF sites.

WX4JCW · Apr 6, 2018

Im figuring out the Channel Assignments now, the problem is that I can hear both sites 1 and 2 and they use the same talkgroups, plus they arent busy but there is an ambulance company using them

abqscan · Apr 6, 2018

abqscan said:
I havn't heard anything on the UHF Grazi NXDN systems, only the VHF sites.

Now that I said that haven't seen any action... on 464.7125CC, I'm seeing action. TG 43 is active on CHs 266,515,528. NXDN takes the fun out of the hunt since it gives you the system channel numbers.

Site 392-1
266 = 453.3125
515 = 461.4250
528 = 461.5875
778 = 464.7125 (Control Channel)

Site 392-2
182 = 452.2625 (Control Channel)
509 = 461.3500
548 = 461.8375
601 = 462.5000

TG 43 is an ambulance company.

tyytor · Apr 6, 2018

i am also trying to monitor the Telstar Communications from the Simpson Mesa site running DSD+ very quiet had one hit all week, how do you find the channel numbers?? got bcd426hp with nxdn upgrade

abqscan · Apr 6, 2018

I found them using DSD. NEXEDGE96 systems tell you the CH#s of the system, then it takes some math.

https://forums.radioreference.com/v...re/298075-understanding-nexedge-trunking.html

tyytor · Apr 6, 2018

abqscan said:
I found them using DSD. NEXEDGE96 systems tell you the CH#s of the system, then it takes some math.

https://forums.radioreference.com/v...re/298075-understanding-nexedge-trunking.html

hi, i was looking at that thread before posting, this site is not showing much output so far other than IDAS site 3.
i will try another week and see.

abqscan · Apr 6, 2018

I haven't seen any action on the Telstar system.

WX4JCW · Apr 6, 2018

abqscan said:
Now that I said that haven't seen any action... on 464.7125CC, I'm seeing action. TG 43 is active on CHs 266,515,528. NXDN takes the fun out of the hunt since it gives you the system channel numbers.

Site 392-1
266 = 453.3125
515 = 461.4250
528 = 461.5875
778 = 464.7125 (Control Channel)

Site 392-2
182 = 452.2625 (Control Channel)
509 = 461.3500
548 = 461.8375
601 = 462.5000

TG 43 is an ambulance company.

You Rock, btw what was the math equation on this system

WX4JCW · Apr 7, 2018

i figured out the math using Eric Cottrell's formula but the channels above 401 use 455 in the equation instead of 460 nice

abqscan · Apr 7, 2018

Is anyone else getting CH 266 on site 1. I started listening to the system again on a different computer and I'm not seeing 266 come up. I'm wondering if it was a bad decode error from DSD???

abqscan · Apr 8, 2018

WX4JCW said:
i figured out the math using Eric Cottrell's formula but the channels above 401 use 455 in the equation instead of 460 nice

I don't follow the 401 part. Here is the Algebra I used from Eric's post.

For Channels 1 to 400:
Freq = 450 + (( Ch - 1 ) * 0.0125

For Channels 401 to 800:
Freq = 460 + (( Ch - 401 ) * 0.0125

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