Motorola APX 4000 User Training page 31

APX 4000:
Audio Alerts
REMEMBER! This is a Repeater-type system
If you talk before you hear the Talk Permit Tone,
some of what you said will be lost
If you hear a tone when pressing the PTT, one of
several things may be happening:
•
No Signal
•
All Channels are Busy
•
Your Radio is Damaged
•
Your Radio Battery is Depleted
Talk Permit Tone
APX 4000
Zone Batt Nuis