APX
TM
 7500 O5 
39 
Index 
General Radio Operation 
 Receiving and Responding to a Talkgroup Call 
To receive a call from a group of users, your radio must 
be configured as part of that talkgroup. 
 
When you receive a talkgroup call (while on the Home 
screen), depending on how your radio is 
preprogrammed: 
 
1 ASTRO Conventional Only: 
   The LED lights up solid yellow. The display shows the 
   talkgroup alias or ID, and the caller alias or ID. 
 OR 
 Trunking Only: 
   The display shows the caller alias or ID. 
2 Hold the microphone vertically 1 to 2 inches (2.5 to 5.0   
   cm) from your mouth. 
3 Press the PTT button to respond to the call. The LED  
   lights up solid red. 
4 Release the PTT button to listen. 
 
PTT 
Button