Motorola DP 4400 UHF - Manual (Page 44)

Advanced Features
English
36
Utilities
Setting the Squelch Level
You can adjust your radio's squelch level to filter out unwanted
calls with low signal strength or channels that have a higher
than normal background noise.
Settings: Normal is the default. Tight filters out (unwanted)
calls and/or background noise. However, calls from remote
locations may also be filtered out.
Procedure:
1 Press the programmed Squelch button.
2 You hear a positive indicator tone, indicating the radio is
operating in tight squelch.
OR
You hear a negative indicator tone, indicating the radio is
operating in normal squelch.
Setting the Power Level
You can toggle your radio’s power setting between high or low
for each channel.
Settings: High enables communication with radios located at a
considerable distance from you. Low enables communication
with radios in closer proximity.
Procedure:
1 Press the programmed Power Level button.
2 You hear a positive indicator tone, indicating the radio is
transmitting at low power.
OR
You hear a negative indicator tone, indicating the radio is
transmitting at high power.
Turning the Option Board Feature(s) On or Off
A channel can support up to 6 option board features. Refer to
your dealer or system administrator for more information.
Procedure:
Press the programmed Option Board Feature button to toggle
the feature on or off.
Turning the Voice Operating Transmission (VOX)
Feature On or Off
This feature allows you to initiate a hands-free voice activated
call on a programmed channel. The radio automatically
transmits, for a programmed period, whenever the microphone
on the VOX-capable accessory detects voice.
Pressing the PTT button during radio operation disables VOX.
To re-enable VOX, do one of the following:
• Turn the radio off and power it on again, OR
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