That's sort of a tricky question.
Yes, for the most part the information is provided by the FCC. But, there is no guarantee that all frequencies listed for a particular licensee are in use for a particular system at any given time. Furthermore, some systems have frequencies licensed under multiple licenses. To add insult to injury, some places have conventional frequencies licensed to them that they use in a trunked system even though they were licensed as conventional frequencies.
The FCC DB lists a
lot of callsigns associated with Mobile Relays Partners, LTD in the trunked ranges.
Here is what I did:
1. Go to
http://wireless2.fcc.gov/UlsApp/UlsSearch/searchAdvanced.jsp
- under the
Service Group choose
Match Only the Following Radio Services
- then select everything beginning with Y such as YP
- under
Name put in
Mobile Relays
-
State: Texas
-
Results Display: 100
- click Search
This will bring up many licenses for Mobile Relays - some systems will be in 400 mhz, some in 800 mhz, some elsewhere. They could be either Motorola, EDACS, etc.
Once you get a list of the callsigns, click on one of them - Then choose Locations (dont go by the address on the Main section). The Locations will tell you where those frequencies are _supposed_ to be in use at. And look for the frequencies that list FB4 FB6 or FB8. FB is fixed base. FB2 is a repeater. FB4/6/8 are all for various types of trunked systems.
Here are ones I see with specific locations in Hidalgo Co.
WPJM884
- looks like may be part of
site 001
- location says 5 KM N MCCALLEN TX
WPQE434
- looks like may be part of
site 001
- location says 5 KM N MCCALLEN TX
WPRI273
- looks like may be part of
site 001
- location says 5 KM N MCCALLEN TX
WPRU483
- looks like may be part of
site 009
- location says 5 KM N MCCALLEN TX
WPUQ564
- looks like may be part of
site 012
- location says 3.6 MI SW EDINBURG
WPXB664
- looks like may be part of
site 012
- location says 3.6 MI SW EDINBURG
WQBC755
- location says 3.6 MI SW EDINBURG
I would say the last one above is the best bet for the non-passport system. And maybe also the second to last one.
Again, please keep in mind that (a) just because a frequency is listed there does not mean it is actually in use right now, (b) some sites/systems may have frequencies in use from multiple licenses above, (c) some frequencies may be EDACS, some may be LTR, some may be Type I/II Moto, etc., etc.
As you already know, you won't be able to _track_ LTR Multinet or LTR Passport.
Also - check these Wiki links for how you would attempt to determine LTRs for system with no/some confirmed LCNs. It's a very tedious process at times if you don't know what LCNs are associated with a particular frequency in a system, especially if you don't have a Radio Shack scanner that can produce that information for you.
http://wiki.radioreference.com/index.php/LTR
http://wiki.radioreference.com/index.php/Mapping_an_LTR_System
But there's a good start, I think.
Mike
