- Dec 8, 2005
- Dupage County, Illinois
Hello,Here is a link to what is known about the system.
Diga-Talk (NID-14) Trunking System, Various, Multi-State - Scanner Frequencies
Hello,alot of what is on the radio reference data base is wrong for this system is wrong. I went and pulled every license for the owner of the system off of the FCC website and had a lot of luck finding channels. Unfortunetly not all of them, well at least not yet. I have ordered some better SDR dongles and new usb hub so hopefully sonn I will be able to better decode this system. Now onto the questions, Can a site have more than one base freq? As you can see from the site I posted below its pretty much all over the spectrum so I am thinking this is a random bandplan but I could be wrong. Does anybody see a pattern in the frequencies I am missing? at this point I just want to get the last two freqs for this site out of the way and move onto the next site. Eric if you could help me with this I would greatly appreciate any advice you may have. Here is what i have so far and all frequencies for this site have been confirmed except for the two I am missing.
NEXEDGE48, 14, 6, 21, 452.02500, 0.0, 0
NEXEDGE48, 14, 6, 38, 452.42500, 0.0, 0
NEXEDGE48, 14, 6, 238, 463.48750, 0.0, 0
NEXEDGE48, 14, 6, 275, 463.93750, 0.0, 0
NEXEDGE48, 14, 6, 351, 0.0, 0.0, 0
NEXEDGE48, 14, 6, 424, 471.85000, 0.0, 0
NEXEDGE48, 14, 6, 468, 472.08750, 0.0, 0
NEXEDGE48, 14, 6, 513, 472.31250, 0.0, 0
NEXEDGE48, 14, 6, 537, 472.42500, 0.0, 0
NEXEDGE48, 14, 6, 544, 472.45000, 0.0, 0
NEXEDGE48, 14, 6, 563, 472.55000, 0.0, 0
NEXEDGE48, 14, 6, 593, 472.7125,0.0, 0
NEXEDGE48, 14, 6, 734, 0.0, 0.0, 0
NEXEDGE48, 14, 6, 755, 463.31250, 0.0, 0
NEXEDGE48, 14, 6, 824, 472.00000, 0.0, 0, CC
Cancel that last post. I finally found the missing frequency, it was 7.5 kHz away from another VERY strong data or paging channel on another system, AND 7.5 Khz away in the other direction from yet another DMR frequency (my hardware scanner wasn't sensitive enough to find it, but I finally caught it with SDR#; not many systems in my area operate on directly adjacent channels, so I figured my hardware scanner would find it).Greetings and Happy new year.
Well, I'm having some difficulty finding a frequency assigned to a small VHF Nexedge9600 Trunked System. So, I've got a few questions:
1. Once you find the Control Channel, does DSD+ 1.101 automatically display the active channel numbers for your system in the event log window (i.e. before you've added any entries to the frequency file)? I'm assuming it does, I just want to be absolutely certain.
2. Do Nexedge 9600 systems typically use 1 channel per frequency (i.e. as opposed to DMR)?
As noted above, I've found a small VHF NXDN 9600 system; in DSD+ the CC shows Channels 1,2 and 3. So far I've found two frequencies (152 Mhz area, from a block of paging freqs in ULS), one is the control channel and a second is a voice channel, Channel 2. When running DSD+ 1.101 in trunked mode with FMP and so forth, I can hear voice grants from channel 2, and the CC window shows voice grants for Channel 3. But, I'm beating my head against the wall finding the third frequency, for Channel 3.
The 2 frequencies I found so far have a very strong signal; I initially found them with my hardware scanner randomly searching through 150-162 Mhz (I highly suspect the system is operating in 150-155 Mhz, so I also run a separate custom search in this narrower range).
In any event, it seems like I should fairly easily find that third frequency by searching the VHF band with my hardware scanner, while Channel 3 is active in DSD+.
The system in question is not terribly active, but it should be active enough to find the remaining voice channel without this much difficulty.
Any ideas on what I might be missing here?
This is normal. It is why the system has 5 sites. So the same activity can be received at multiple sites.Site 1, 2 and 4 seems to cover each one. I mean, whenever there is activity on site 1, channel 4 for example, you can hear exactly the same on site 4 channel 18.
I am thinking that you assumed that some voice channels you found belonged to the control channel you were monitoring. So while monitoring site 1's control channel, you found a site 2 or 3 or 4 voice channel, but marked it as belonging to site 1. You need to look at the RAN values on the voice channels, They will match the site number.At first I tought that I accidentally clicked over some channel from other site and that's why I have so many different frequencies for one channel. By now I had no time to monitor other site's freciencies but the one I have didn't match so there is a little chance for that to be true.
Hello,I am looking at a single channel NXDN site on a multi site network.* It behaves as a control channel, but voice traffic is carried on the same channel.* DSDPlus recognizes this as a control channel with neighbors, it reports radio registrations (TG and RID), and it synthesizes voice traffic but does not show any talk group call information in the log. Something a bit different..
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I think you are referring to the MRC de Papineau system in Quebec, on 152.300/.435/.555/.9975 etc. I have not seen more than one channel per site. You can tell when it switches from control to voice just by the sound. Once I caught a bit of voice on one site; not sure when their peak usage time is when combined activity is most likely captured.I am looking at a single channel NXDN site on a multi site network.* It behaves as a control channel, but voice traffic is carried on the same channel.* DSDPlus recognizes this as a control channel with neighbors, it reports radio registrations (TG and RID), and it synthesizes voice traffic but does not show any talk group call information in the log. Something a bit different..
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