12
Advanced Operations
Radio lock
Your ALAN HP446 has been provided with a security function which
protects it against accidental activation of commands.
You can lock the radio as follows:
To lock the radio:
•
Press the FUNC key and the
key.
To unlock the radio:
•
Press the FUNC key and the
key.
When the radio is locked only PTT button is enabled.
Advanced Operations
In this section we’ll describe some advanced operation which you
can do with your handheld transceiver:
Handsfree transmission (VOX)
VOX (Voice Operated eXchange) is an automatic system which allows
you to automatically switch the transmission in hands free mode just
by speaking in the built-in microphone of an headset (not provided
with the unit). Please ensure that the handset is suitable for your
transceiver as reported in the paragraph “Microphone connection”.
To insert the VOX and adjust sensitivity:
1)
Switch on the radio keeping pressed the FUNC key and the
key.
VOX
icon will be displayed.
2)
Connect the optional headset with built-in microphone to the
microphone connector located on the transceiver’s side.
3)
Ensure that the headset’s built-in microphone is located close
to the side of your mouth.
4)
Press the FUNC key and the
key to adjust the VOX sensitivity
in order to ensure a stable transmission when speaking with a
normal voice level.
5)
VOX
icon is flashing if you set LOW sensitivity; it is stable if you
set HIGH sensitivity.
We recommend to set the just minimum sensitivity as
possible. A too high value could cause accidental
transmissions, especially in hi-noise environments.
PTT button is disabled during VOX.
English
Summary of Contents for HP446
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