Audiovox FR548-2CH - Manual (Page 13)

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NOTE: To communicate with other FRS units, they must be switched to the
same channel and CTCSS subcode. To communicate with other FRS
units that do not have subcodes, switch your unit to the same channel
with the subcode set to 00.
The CTCSS subcodes do not prevent others from hearing your trans
mission. This will only allow you to ignore all traffic on a given channel
not using the same subcode.
Beep Confirmation/ “Roger Beep” Tones
Whenever the Up/Down or function select buttons are pressed, the speaker will
sound a beep tone to confirm each press, provided the key tone feature is en-
abled. This also controls the “Roger Beep” function. This is a tone which is
automatically transmitted whenever the PTT button is released. This alerts the
receiving party that your transmisssion has been ended intentionally. Press the
Function (F) button three times to access the beep tone feature. To disable the key
tone:
- Press the F button until the Beep Tone icon ( ) flashes; On appears
on the display.
- Then press Up or Down buttons until OF appears and icon disappears.
No beep tones should be heard.
To enable the key tone, proceed as before, until OF appears and Beep Tone
icon flashes. Then press Up or Down button so that On appears. Key tone icon
is steady and beep tone is heard.
Channel Scanning
Press function button four times until the SCAN icon flashes; OF will also appear
on the display. Press the Up or Down button to enable the Scan function; On will
appear, but the SCAN icon will still flash.
- While the SCAN icon is flashing, press the CALL button; channel scan will
commence in the upward direction and then repeat. If and active channel is
encountered, scan will pause on the active channel for 5 seconds, and
then proceed to the next higher channel.
- To interrupt scan, press the CALL button; the SCAN icon will again flash. A
call tone will be sent on the primary channel of the unit. The unit will remain
on this channel for 15 seconds and scanning will resume.
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