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Difference between revisions of "LTR Standard"

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== Overview ==
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#REDIRECT [[Logic Trunked Radio]]
 
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[[Category:RR Glossary]]
LTR Standard systems have no dedicated [[control channel]].  All control data is sent as [[subaudible data]] along with voice transmissions.  Systems can have any number of channels from 1 through a maximum of 20.  Each channel in the system is assigned a unique number (01 through 20) and these need not be sequentially assigned.  Each subscriber radio must be programmed with all channels in the system in proper logical channel order (the same requirement as [[EDACS]] systems).
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[[Category:Database Glossary]]
 
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[[Category:Receivers Glossary]]
[[Uniden scanners]] that track LTR Standard systems require that the channels be programmed in proper logical order in order to properly monitor the system.  [[Radio Shack scanners]] that support LTR Standard systems do not require that the frequencies be in proper order but tracking is less efficiently accomplished.
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[[Category:Scanners Glossary]]
 
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[[Category:Signal Analysis and Decoding Glossary]]
LTR Standard [[talkgroups]] are written in the format A-HH-GGG.
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[[Category:Trunktracking Glossary]]
 
 
* "A" is the area code and is either 0 or 1.  The area code is the same for all [[talkgroups]] in a given system and is arbitrarily chosen by the system operator; the most common use is to simply distinguish between [[talkgroups]] on multiple systems.
 
 
 
* "HH" is the home [[repeater]] number and has twenty possible values, 01 through 20.  A [[talkgroup]] will always use its home [[repeater]] by default, unless the [[repeater]] is already in use by another [[talkgroup]].  If the home [[repeater]] is in use, the [[controller]] will assign another free [[repeater]] at random.  If no [[repeater]] is free (all are in use), then the radio will receive a busy signal.
 
 
 
* "GGG" is the group number and has 254 possible values, 001 through 254.
 
 
 
== Scanners that Track LTR Standard ==
 
 
 
* Radio Shack [[Pro-2067]]
 
* Radio Shack [[Pro-92]]
 
* Radio Shack [[Pro-97]]
 
* Radio Shack [[Pro-2051]]
 
* Radio Shack [[Pro-2055]]
 
* Uniden [[BC246T]]
 
* Uniden [[BC250D]]
 
* Uniden [[BC296D]]
 
* Uniden [[BC780XLT]]
 
* Uniden [[BC785D]]
 
* Uniden [[BC796D]]
 
* Uniden [[BC898T]]
 
* Uniden [[BCT8]]
 

Latest revision as of 23:48, 23 January 2016