LTR Mapping

[zraven]

I have been trying to map several local LTR systems and finding it is a lot harder/time consuming than I thought it would be.

I found this reference Mapping an LTR System - The RadioReference Wiki on how to map a LTR system but it's VERY tedious. (Checked RR and FCC ULS, no luck)

I am currently using a PRO 164.

Is there a scanner that will put together a LTR system after finding home repeaters? Is my scanner capable of simplifying the process?

 

[KC5EIB]

What systems are you trying to map?

 

[zraven]

the one in particular is a company called advanced communications of texas.

I am playing with cyfair vfd's LTR which I already know and am having trouble getting the TGIDs to show, I know them, just searching to test.

But the advanced communications one, I have only one channel and need to map the whole system.

 

[N1BHH]

the one in particular is a company called advanced communications of texas.

I am playing with cyfair vfd's LTR which I already know and am having trouble getting the TGIDs to show, I know them, just searching to test.

But the advanced communications one, I have only one channel and need to map the whole system.

Why don't you post a link to the system so that you can be given the proper assistance. An LTR system must be placed in a channel slot conforming to the LCN of the system. If the LCN is 01, 04, 08, 13, they should be placed in those channel numbers in a bank with the bank set to LTR, each frequency and mode you input from the first one will remain LT. You can intersperse the empty slots with conventional frequencies with no adverse effects. You can actually sit on a particular frequency with the radio mode set to LT and watch the screen to see what the particular frequency is in the LCN order.

 

[zraven]

Why don't you post a link to the system so that you can be given the proper assistance.

As far as I know this system has not been mapped yet. I have searched RR and FCC but can not find it. I know it exists, and is more than likely registered to an individual not a company, which is making it hard to locate on FCC.

 

[KC5EIB]

But the advanced communications one, I have only one channel and need to map the whole system.

What frequency do you have?

 

[ecps92]

Advanced Wireless??

the one in particular is a company called advanced communications of texas.

I am playing with cyfair vfd's LTR which I already know and am having trouble getting the TGIDs to show, I know them, just searching to test.

But the advanced communications one, I have only one channel and need to map the whole system.

 

[zraven]

I pick it up on 410.7000 0-08-054 R08

Advanced Wireless... no they are all VHF

 

[N1BHH]

I pick it up on 410.7000 0-08-054 R08

Advanced Wireless... no they are all VHF

That's the first step, you have identified that frequency as channel 08. Repeat the procedure with all the rest of the frequencies and submit it when you find all the correct LCN.

 

[zraven]

how will I know when I have all the frequencies? (also I saw a R10 for a fraction of a second but couldn't right it down)

I know there should be at least 3 frequencies, up to 20, but I have seen other systems use only 1.

I know this one has at least 2. I programmed the known frequency into channel space 8 but when I scan I don't show any TGIDs. The only time I get a TGID is when I Man a channel. I have set the Bank Trunking to LTR and each frequency (in this case only one) to LT.

 

[zraven]

Ok now im really confused....

I was playing with a radio that is on the system Im mapping and got the following frequencies:

410.700
466.400
459.625
347.950
347.275
459.200
468.225
468.825
467.150

The radio this came from is a TK 3173, which only operates on 450-490.
How am I getting all these other frequencies, which I get audio on all of them, and only getting TGID on 410.700???

 

[zraven]

Still having no luck with this system. Still getting outrageous frequencies.

Need help?

 

[ecps92]

Well, if you have the radio, and are using Close-Call, you are only going to get the inputs not the Repeaters.

Assuming some of these are in ERROR [hey it happens, it's electronics]
you have identified

461.4000,
454.6250
454.2000
463.2250
463.8250
462.1500

You won't get data on the input, only via the Repeater Outputs

Ok now im really confused....

I was playing with a radio that is on the system Im mapping and got the following frequencies:

410.700
466.400
459.625
347.950
347.275
459.200
468.225
468.825
467.150

The radio this came from is a TK 3173, which only operates on 450-490.
How am I getting all these other frequencies, which I get audio on all of them, and only getting TGID on 410.700???

 

[zraven]

Well, if you have the radio, and are using Close-Call, you are only going to get the inputs not the Repeaters.

Assuming some of these are in ERROR [hey it happens, it's electronics]
you have identified

461.4000,
454.6250
454.2000
463.2250
463.8250
462.1500

You won't get data on the input, only via the Repeater Outputs

Thank you, I will see if I can get them in the correct order now.