Audiovox FR-541 owner manual Functions, Function F Select Button, Channel Selection

FUNCTIONS

Function (F) Select Button (12)

Pressing this button will allow selection of frequency channels as well as selec- tion of the various unit functions. Each press permits selection of the desired channel (1–14), Continuous Tone Coded Squelch System (CTCSS), beep tone, scan, and Dual Watch mode. This button also activates the Key lock feature

when pressed and held for more than 2 seconds. The Key lock icon ( ) appears on the display. To unlock this function, press and hold the function button for 2 seconds.

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 monitor button again 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 monitor button momentarily to confirm selection.

The CTCSS mode can be turned off by accessing the flashing subchannel num- ber CTCSS icon and using the Up or Down button to select 00 as the tone code frequency; then press monitor again.

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