Is there a streamlined way to program a trunked system from suspected control channel hits found during a Discovery scan? I’m looking for systems that aren’t captured in the RR database but show up in the FCC licensing data.
That's really going to be dependent on which system type it is.
If it's a P25 system, then all you need are the frequencies, entering them into a site. While you only need the control channel frequencies, until you know, for sure, which might be control, as well as alternates, I'd enter all of them.
If, however, this is a DMR or NXDN system, you're going to need the LCNs (DMR) or channel numbers (NXDN).
I would start (for DMR) by creating a One Frequency Trunked system. Create a separate site (in the system) for your suspected control channel, as well as other frequencies for the same licensee at that location. )So, if there are four frequencies, your OFT system would have four sites, one for each frequency.) Set the system for ID Search. Then, if you are using ProScan or ARC536 to log activity, you can see if a given TGID comes up on more than one of the frequencies, with the same color code. If that's the case, then that's an indicator of the frequencies used on the site. (If your prospective system is not very busy, it may not use all of the frequencies regularly.) Once you get some sort of indication that two or more frequencies are being used, then create a new system, DMR, with all of the suspected frequencies in one site. Make sure that you also have a department, with at least one TGID loaded. I use a
1 (one) as a dummy TGID. Then, you can run the LCN Finder to see if it can provide the correct LCNs to be used. (If you do not have a department, with at least the 'dummy' TGID loaded, you would not see your prospective system come up in the LCN Finder setup.)
You can do the same process on a NXDN system, to see how many frequencies are being used. Look for the same TGID, using the same RAN or Area, on more than one frequency. Then create a system & run the LCN Finder to see if it will capture the channel numbers. Here again, in order to use the LCN Finder, it must have a department, with at least one TGID. You might also try the program used in this thread:
Hello all, The other day I posted about a coding project I was working on using the knowledge I have learned in the introduction to C programming class I am taking this semester in college. However, the files I originally posted required additional DLLs to run, so today I spoke with my...
forums.radioreference.com
There is also another thread (I don't have the link handy) that has an Excel spreadsheet that can be used to determine NXDN channel numbers. That works for some, but not all of the systems in my area.
Of course, you can also determine your LCNs or channel numbers with one of the SDR dongles & software that can be downloaded. I have not gotten into using this method, but have seen enough comments that it does appear to work.
