LTR - San Antonio

[kkn50]

We are using an LTR system to communicate with our truck fleet in San Antonio. Service provider is All Points Communications.

I have a new BC396T and would like to know how to program it to receive our comms.

Our radios operate on two systems: System 11 (which appears to be the Northwest tower - http://www.radioreference.com/modules.php?name=TRSDB&sid=3038) and System 21 (don't know where this one is).

When I key our radio on System 21, the BCD396T Close Call displays either 814.1125 or 814.1625.

When I key our radio on System 11, the BCD396T Close Call displays either 812.1375, 810.5625 or 808.0625.

I don't know much about LTR systems but I suppose the freq that comes up most often is our 'home' frequency and the other frequencies are from the 'group' and are used if our 'home' frequency is busy.

Any suggestions on how to program System 21 if I only know two freqs from the system?

Thanks.

 

[Linn]

LTR-San Antonio

It looks like this http://www.radioreference.com/modules.php?name=TRSDB&sid=3038 is your system 11.

 

[loumaag]

Don't forget, what you see when keying your radio is the repeater input frequency, what you need to program in the scanner is the repeater output frequency. In this instance add 45 MHz to the signal you are seeing coming out of your radio for the output frequency.

Now that does not help with the LCN problem. However, if you know your talk group number then you can identify the Home LCN which will get you going. The two input frequencies you gave could be associated with this system supposedly located in Elmendorf: see WNQS423. If this proves to be the system, don't forget to submit the data once you get the LCN's figured out.

 

[kkn50]

Lou:

I think you are right as I now recall something mentioned by the dispatcher about Elmendorf.

On our system, I think the call it the 'south tower'.

The FCC data you linked to indicates three freqs - are there three frequency LTR systems?

 

[loumaag]

The FCC data you linked to indicates three freqs - are there three frequency LTR systems?

Sure, LTR systems can use anything from 1 to 20 channels (per site). Now admittedly a one channel would be pretty limited, but a hospital just a mile or so from here runs a two channel LTR system for internal communications.