Audiovox FR548-2CH owner manual Functions

Low Battery Alert

When the batteries are in need of replacement or charging, the low battery icon

( ) will appear on the LCD display and the transceiver will sound a tone to alert the user.

Monitor Button

You can monitor channel activity by pressing the Monitor (M) button (3). If pressed and held for more than 2 seconds, you can continuously monitor channel activity. Press again, momentarily, and monitoring is disabled. Pressing this button mo- mentarily will cause the unit to beep and the LCD backlight function will be acti- vated for 5 seconds.

Function (F) Select Button (12)

Pressing this button will allow selection of frequency channels as well as selec- tion of the various unit functions.

FUNCTIONS

Channel Selection

Press function button once or until large two-digit channel display flashes. Press Up or Down buttons (10, 9) to select desired channel (1–14). Press the PTT button to confirm and fix channel selection.

CTCSS Mode (Sub-Channel) Selection

The CTCSS provides 38 Sub-Frequencies to allow you to utilize the coded squelch tones (00–38). In order to communicate with another party on the same main channel and the same subcode must be used. This filters out unwanted trans- missions without the same coded squelch tone. Since there are 38 CTCSS Sub- channels for each main channel, a different subcode may be selected for each of the 14 channels.

To change the CTCSS Sub-channel,

-Press the Function (F) button twice or until the sub-channel number to the right of the main channel number begins flashing.

-Then press the Up or Down button to select the desired sub-channel for use.

-Press the PTT button momentarily to confirm selection.

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