I've read that only 32 control channels can be programmed into a radio. How then does the radio programmer choose which control channels to program into a SmartZone or OmniLink radio where the system has more than 32 control channels? Also, are alternate control channels necessary for programming too, because it seems now the maximum cells in the radio have been cut in half?
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Programmin CCs in radios
- Thread starter evan
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If the maximum number of control channels that can be programmed in a Smartzone system radio is 32, then it only makes sense that the system operator will only have 32 control channels to choose from when setting up the system. This includes alternates and primaries. You do not program the control channels in individually for each site. You just program in the 32 for the system. What might be an alternate at one site could be a primary at another site. Careful planning is required to make frequency reuse work.
If two Smartzone systems are linked together to form an Omnilink system, then each system can have 32 control channels for a total of 64.
If two Smartzone systems are linked together to form an Omnilink system, then each system can have 32 control channels for a total of 64.
Often sites that are not adjacent have similar control channels. I see it frequently. That way one freq serves multiple site CCs.
-Wayne
-Wayne
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Mike_Oxlong said:
This is infact the case most of the time. They usally use one control channel for different Sites that are farther apart from eachother. Some systems that are not like this will be kind of segmented. Example; If the sites that the County uses are farther out and the City's are near, then the county radio's will have the CC for the County Site and the City Radio's will have the CC for the City Sites even though they are on the same system. They usally have one or two CC that are the same between the City and County so there can be interoprability.
I've seen it done both ways so take your pick.
jwood
Member
Same Question but more indepth answer needed...
I understand the above posting, but here is my question, On a OmniLink system with "4" zone controllers and each zone controller has different system keys, how does one program the radio to roam between the 4 zones when you can only enter one system key in the radio per system and personality?
I have the radio programed with say system 1 which has XXX key(there are 4 zone controllers) then up to 32 control channels are programmed, do I program 8 CC for each zone? system 1 then use 8 more from system 2 8 CC for system 3 ect ect?
Will the zone controllers see the radio leave zone 1 with key XXX and when the radio tries to affiliate into the next zone with another key of yyy (still part of the same OMNILINK SYSTEM) the controller for zone 2 will welcome the radio aboard? even tho the radio is a xxx keyed radio trying to affiliate with a yyy keyed zone controller?
are the zone controllers programed to accept affiliations from radios with xxx, yyy, aaa and zzz keys in the omnilinked system?
In short how can a radio roam between 4 zones which all have different system keys and the radio is only programed with one zone system key ?
This really sounds confusing but I hope some one will elaborate on what I am trying to understand.
I understand the above posting, but here is my question, On a OmniLink system with "4" zone controllers and each zone controller has different system keys, how does one program the radio to roam between the 4 zones when you can only enter one system key in the radio per system and personality?
I have the radio programed with say system 1 which has XXX key(there are 4 zone controllers) then up to 32 control channels are programmed, do I program 8 CC for each zone? system 1 then use 8 more from system 2 8 CC for system 3 ect ect?
Will the zone controllers see the radio leave zone 1 with key XXX and when the radio tries to affiliate into the next zone with another key of yyy (still part of the same OMNILINK SYSTEM) the controller for zone 2 will welcome the radio aboard? even tho the radio is a xxx keyed radio trying to affiliate with a yyy keyed zone controller?
are the zone controllers programed to accept affiliations from radios with xxx, yyy, aaa and zzz keys in the omnilinked system?
In short how can a radio roam between 4 zones which all have different system keys and the radio is only programed with one zone system key ?
This really sounds confusing but I hope some one will elaborate on what I am trying to understand.
You can put in multiple system keys, but the systems that I've seen just use one system key for all of the zones. Take a look at the Palmetto 800 system in SC. It has 61 cells throughout the state, but it only uses one system key.
To add on, the system keys are not meant to be used for each site/cell. They are intended to be used for the system, hence the name.
To add on, the system keys are not meant to be used for each site/cell. They are intended to be used for the system, hence the name.
jwood
Member
rescue161 said:
Hey, Scott
Check this system out 4 systems interlinked via Omnilink Software, this is the one I am refering to..I am interested in how a system like this allows seemless roaming and the user does not have to touch the radio equiptment, as you can see there are 4 system keys for this Omnilink System, but the user equiptment you can ony have one system key per System/Zone of your radio.. do the zone controllers allow 4 system keys to access the zones?
http://www.radioreference.com/modules.php?name=TRSDB&sid=901
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It appears as though you'd have to manually switch zones when going from "North" to "South" to "East" to "West".
If it's a different system id, then it's a different system so to speak.
Someone from that area would have to chime in as I've never dealt with that system.
End user radios have no problems with having more than one system in them at one time. I have a few radios with 5 systems in them and they do fine.
Hope that helps.
If it's a different system id, then it's a different system so to speak.
Someone from that area would have to chime in as I've never dealt with that system.
End user radios have no problems with having more than one system in them at one time. I have a few radios with 5 systems in them and they do fine.
Hope that helps.
A site can announce an adjacent site which is on another zone. The radio gets all the details about the adjacent site over the CC. Once it roams onto the other zone it must request access.
-Wayne
-Wayne
[quote="jwood]
as you can see there are 4 system keys for this Omnilink System, but the user equiptment you can ony have one system key per System/Zone of your radio.. do the zone controllers allow 4 system keys to access the zones?[/quote]
I think you're confused as to what the system key actually does.
It's a small file which resides on your hard drive and is used by the Motorola RSS to determine if you have the authority to program in the system with that system id.
That's it. It's never put into the radio nor is it ever used over the air. It is only used when the radio is being programmed.
When setting up an Omnilink system, the person doing the programming will enter each system in as a separate system with the Omnilink option. They must have the system key for each separate system or the RSS will not let them enter in the details (control channels, radio id, etc).
When the radio starts to think about affiliating to a different site, it will use the information from the current control channel to see if any other control channels are available including those from another Omnilink system.
Then, as Wayne says, it will attempt to affiliate with the new system.
If the talkgroup and radio id are allowed to use the new system, then that's all there is to it.
The user does not have to switch channels if his/her talkgroup is allowed on the new system.
as you can see there are 4 system keys for this Omnilink System, but the user equiptment you can ony have one system key per System/Zone of your radio.. do the zone controllers allow 4 system keys to access the zones?[/quote]
I think you're confused as to what the system key actually does.
It's a small file which resides on your hard drive and is used by the Motorola RSS to determine if you have the authority to program in the system with that system id.
That's it. It's never put into the radio nor is it ever used over the air. It is only used when the radio is being programmed.
When setting up an Omnilink system, the person doing the programming will enter each system in as a separate system with the Omnilink option. They must have the system key for each separate system or the RSS will not let them enter in the details (control channels, radio id, etc).
When the radio starts to think about affiliating to a different site, it will use the information from the current control channel to see if any other control channels are available including those from another Omnilink system.
Then, as Wayne says, it will attempt to affiliate with the new system.
If the talkgroup and radio id are allowed to use the new system, then that's all there is to it.
The user does not have to switch channels if his/her talkgroup is allowed on the new system.
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