Motorola APX 4000 Guide

MODE KNOB
The sixteen-position knob on top of the APX portable radio is
called the mode knob or “selector.” It primarily functions to
change back-and-forth between talk-groups within a
particular zone.
The white line running down the side of the mode knob tells
you what particular number the knob is currently set to; the
knob will click as you rotate it.
Immediately underneath of the mode knob is the encryption
on/off switch (see inset). This switch is not programmed in
the FC/CoMIRS radios as this is done in the Zone and talk-
group selection in those radios that are programmed with
encryption capabilities.
LED INDICATOR:
Next to the mode knob is a small LED indicator. This LED has three colors: red,
green, and yellow. The LED indicator is typically not illuminated.
COLOR MEANING
Solid Red Radio is transmitting
Blinking Red
Burst transmission/data or low battery
(constant)
Blinking Yellow Radio is receiving an encrypted transmission
Solid Green Radio is powering up
Blinking Green Radio is receiving a private call or page
MODE KNOB

Motorola APX 4000 Specifications

General

IP Rating	IP67
Operating Temperature	-30°C to +60°C
GPS	Optional
Frequency Range	VHF: 136-174 MHz, UHF: 380-470 MHz, 450-520 MHz
Power Output	VHF: 1-5W; UHF: 1-4W
Digital Protocol	APCO P25
Dimensions	5.2 x 2.4 x 1.5 inches (without battery)