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General Question on LTR System

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wb0wao

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Apr 29, 2008
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Cape Girardeau, MO
I am trying to derive the LCN's for a 5 channel system - I do have the home repeater channel (LCN 03) and of the remaining four channels I can hear data bursts on two of them. The other two assigned channels have not been transmitting any data bursts that I can hear. Most of the traffic is on the home repeater channel with some additional traffic on one of the other channels with the data bursts. The system is not very busy and at the most I have only heard two users utilizing the system at one time.

Now the question (in two parts)
a. 99% of the traffic on on LCN 03 and all TG's show up as 0-03-xxx I have heard traffic on another one of the channels with a data burst, but as soon as LCN 03 was free, it went back to that channel. Am I correct in my assumption that LCN 03 is the home repeater channel for this system and that the two additional channels handle any overflow from LCN 03?

b. I have not heard any data bursts on the other two channels at all, so am I to assume that those two channels handle any overflow from the other two channels with the data bursts?

I would probably be able to figure this out on my own if the system was somewhat busy - but there is only one main user of it (the local county transit authority) and the other three users I have found use it very infrequently. I am looking for a basic understanding of the mechanics of this system so I can decipher the LCN order of the frequencies. I don't have the capability to use a CC decoder at this time, so I have to brute force a resolution. I would assume that probably the other channel that I have heard traffic on is probably LCN 05, but that is just an educated guess on my part.

Dennis
 

ericcarlson

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Houston, Texas
a. 99% of the traffic on on LCN 03 and all TG's show up as 0-03-xxx I have heard traffic on another one of the channels with a data burst, but as soon as LCN 03 was free, it went back to that channel. Am I correct in my assumption that LCN 03 is the home repeater channel for this system and that the two additional channels handle any overflow from LCN 03?
Yes, you are correct. If the home channel is not in use all of the traffic should be there.

b. I have not heard any data bursts on the other two channels at all, so am I to assume that those two channels handle any overflow from the other two channels with the data bursts?
They might not be in use at all. However, some systems are setup not to send idle data bursts on overflow channels. In my experience, any other non-busy channel could be assigned a talkgroup if the home channel is busy.
 
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