APX 6500 O5 CH 
27 
NEXT > < PREV CONTENTS 
 Multiple Control Head Features 
All Active Mode 
ADVANCED FEATURES 
The All Active mode enables all connected control heads 
attached to the radio to operate concurrently with each other. 
 
When you activate a feature on one control head, the rest of 
the control heads will have the same activated features and 
indicators on their respective display. 
 
Note: The multiple control head feature allows only control 
heads of the same type to be connected. Upon power up, if a 
control head of a different type is connected to the radio, the 
radio reports the FATAL error CH MISMATCH on the display 
of all attached control heads. 
 
 
Intercom Feature in All Active Mode 
 
The intercom feature allows one control head user to talk to 
another control head user in a Multiple Control Head  
configuration. At any given time, when a control head being 
operated has priority for the intercom call, all other control 
heads are blocked until the active control head releases PTT 
button. 
 
This can be made on any attached control head. 
This feature only applies to control heads in the All Active 
mode. 
 
Procedure: 
 
1  Press the Menu Select button directly below INTC to 
activate the intercom feature of any of the control heads. 
 
2 Press the PTT button to initiate an intercom transmission. 
All control heads that are attached will receive the same 
intercom call. 
    The display of the control heads receiving the intercom call 
shows the alias/ID number of the transmitting control head. 
 
3 Press the Menu Select button directly below EXIT to 
deactivate the intercom feature. 
 OR 
    Press     to deactivate the intercom feature. 
 
The intercom feature also deactivates when user initiates a 
mode change. 
If the radio is on an emergency channel, pressing of the 
Emergency button or the emergency footswitch button on 
any control head also deactivates the intercom feature.