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Motorola Forum For general discussion of Motorola land mobile radio equipment and their trunking technologies.

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Old 04-13-2006, 5:30 PM
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Default Over The Air Programming Question?

Fellow Forum Members,

If a radio and system have OTAR capabilities, will this feature allow you to change control channels over the air?

Thanks in advance.
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Old 04-13-2006, 7:06 PM
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OTAR is over the air Re-keying. As far as I am aware, this is only for encryption keys. The only over the air reprogramming that I know of is Pro-File on an EDACS system. I am not aware of a similar feature on a moto trunked system.
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Old 04-13-2006, 9:41 PM
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On a Motorola System there is Dynamic Regroup. You can reprogram over the air with it but only make 1 new talkgroup.

KC0LOD
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Old 04-14-2006, 7:20 AM
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Quote:
Originally Posted by IdenLarry
Fellow Forum Members,

If a radio and system have OTAR capabilities, will this feature allow you to change control channels over the air?

Thanks in advance.
What exactly do you mean by "change control channels over the air"?
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Old 04-14-2006, 9:59 AM
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Did you mean to ask about:

Q354 OTACS (Over The Air Channel Steering)
Q353 OTACR (Over The Air Channel Reassignment)

rather than over the air rekeying?

-Mike
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Old 04-14-2006, 11:46 AM
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you don't need OTAR to change control channels. This is why motorola has up to four CC programed in the radio. If the current CC is shut downr, another CC will come up and the radio will find it.
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Old 04-14-2006, 9:37 PM
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With Motorola Trunking there's nothing that can be done to change the programming of a trunked radio. Dynamic Regrouping basically inserts a TG ID into the regroup channel permitted the radio has one programmed in its channel list. Normally the TG ID for the regroup channel is zeroed out (if one affiliates with the regroup channel it sends zeros).

There's also the ability to soft program a failsoft freq for the regroup channel also, but I've never heard of it being used. FWIW

-Wayne
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Old 04-15-2006, 9:19 PM
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If it is a SmartZone system and the radio is programmed for SmartZone operation then the radio can get an updated control channel list for adjacent sub-systems from the current sub-system's control channel data stream.

If a SmartNet trunked system were to add a new control channel (up to four maximum) then it would require reprogramming of the entire fleet.

OTACS and OTACR are for conventional operation.
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