Operation Manual

English
8 Advanced operations
Advanced operations
HANDSFREE TRANSMISSION WITH VOX
VOX (Voice Operated Transmission) is an automated system which allows
hands-free conversation with your ALAN HP 446 extrá.
The sound of your voice activates transmission once you connect the prop-
er headset (see the optional accessory table).
When you stop talking the radio will revert to receive mode.
To enable VOX function:
a. Turn the radio off.
b. Press and hold the and buttons while turning the radio on,
the VOX icon will be displayed on the LCD.
c. Connect the external headset to the radio through the dedicated connec-
tor [9].
Your ALAN HP 446 extrá VOX has two sensitivity levels to suit to different
background noise.
Press the and buttons to adjust VOX sensitivity;(the status LED
should glow red continuously while you are talking).
• A flashing VOX icon indicates low sensitivity
• A constant VOX icon indicates high sensitivity
SCANNING CHANNELS
Channels may be incorporated into a scan list and scanned.
To add or delete channels from the scan list:
1. Select the channel.
Press CALL and MON buttons simultaneously, the "•" icon will appear or
disappear.
2. To start scan hold CALL button and press the button, the channel
numbers will now cycle continuously.
3. To stop scan hold CALL button and press the button.
4. To review the scan list scroll through the channels using the and
buttons, channels included in the scan list will show a "•" in the
display.
Priority channel:
1. A channel may be assigned as the priority channel, it will then be scanned
more frequently than the others.
2. To assign or remove the priority channel:
• Select the chosen channel.
• Press CALL and buttons simultaneously, the "P" icon will appear
or disappear.
Note: At least two channels must be added to the scan list for the radio
to scan.
A low frequency beep will be heard if scan is selected but no channels
have been added to the scan list.
Note: Scan will stop if a signal with the correct CTCSS/DCS code (if
programmed) is received on a channel, scan will resume when activity on
the channel stops.
Note: The PTT button should not be pressed while the radio is scanning.
RADIO LOCK
This protects against accidental button pushes.
• Press and buttons simultaneously.
• To unlock the radio press and buttons simultaneously.
Note: When the radio is locked only the PTT and MON buttons are enabled.
Istr. HP446 rev.1 - UK 20-07-2001 16:35 Pagina 8