Radio Check

The Radio Check feature checks if a radio is active in a system without notifying the user of the target radio. Besides the Busy LED, there is no other audible or visual indication on the checked radio. The receiving radio automatically and silently responds with an acknowledgment to the initiating radio.

This feature is used to discreetly determine if a target radio is available. For example, if a radio user is non-responsive, Radio Check could be used to determine if the target radio is switched on and monitoring the channel. If the target radio responds with an acknowledgment, the initiator could then take additional action such as using the Remote Monitor command to activate the target radio’s PTT.

In MOTOTRBO systems, Radio Check is configured in portable and mobile radios through the CPS/RM. To allow a radio to use this function, it must be enabled in the CPS Menu settings. All MOTOTRBO radios receive and respond to a Radio Check. This feature cannot be turned off in the CPS/RM.