Audiovox FR540 Two-Way Radio User Manual


 
( ) or Down ( ) button to enable the Scan function (the icon will appear
steadily on the display). While in Scan mode, the unit will pause on any
active channel for 5 seconds, and then proceed to the next higher channel.
The unit will scan channels 1–14 for activity and scanning will continue until
the PTT, monitor, or call button is pressed.
VOX Function
This feature enables you to have hands-free conversation. When using the
internal microphone/speaker or external microphone/headset (purchased
separately), your voice or the signal is detected and the radio transmits and
receives automatically.
To access VOX function, press Function (F) button repeatedly until VOX icon
flashes. Press the function button again and select one of three (L1, L2, L3)
VOX sensitivity levels using the Up ( ) or Down ( ) buttons. L1 setting is most
sensitive and L3 is least sensitive. Select L1 when in a quiet environment and
L3 for a noisy environment.
Dual Watch Mode
This feature allows monitoring of two channels simultaneously. Press function
button repeatedly until channel number flashes and is displayed to the right.
Using the Up ( ) or Down ( ) buttons, choose the alternate channel number you
wish to monitor for activity. Press the Function (F) button to enter your selection.
The channel display will now flash showing your current channel and alternate
channel selection. To disable Dual Watch mode, press the Function (F) button until
the Dual Watch icon flashes ( ) in the display. Then using the Up ( ) or Down ( )
buttons, select “0” as a new channel number.
When in Dual Watch mode, the unit will transmit on the channel on which it
last received a signal. To communicate with someone on another channel,
you must exit the Dual Watch mode and select the desired channel.
Key Lock
This feature prevents accidental change of unit settings. While enabled, Key
Lock allows only the PTT button to operate.
To enable Key Lock, press the Function (F) button for more than 2 seconds
until Key Lock icon ( ) appears. To disable the Key Lock function, press
the function button for more than 2 seconds until Key Lock icon disappears.
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