PROFESSIONAL TWO-WAY RADIO
21
No. Items
Remarks
Enables or disables the sending of a
PTT ID recognition signal which is
preprogrammed either on the beginning
and end of a transmission.
10 Squelch Level Indicates the current Squelch Level.
Enables or disables the receiver
compression/expansion technology
which reduces communication noise
and amplifies voice signals.
Enables or disables the scrambler /
descrambler technology where signals
are coded for extra privacy.
PROFESSIONAL TWO-WAY RADIO
22
AUXILIARY FUNCTIONS
The functions below can be programmed in software. Some of
the functions have been switched off before leaving the factory
and may need to be programmed if required.
Battery Save Function
The Battery Save function decreases the amount of power used
when a signal is not being received and no operations are being
performed (no keys are being pressed, and no switches are
being turned). While the channel is not busy and no operation is
performed for 12 seconds, Battery Save turns ON. When a signal
is received or an operation is performed, Battery Save turns OFF.
Factory programmed on Save On
Beep Tone
A beep tone is sounded when the radio is switched on or the side
buttons presses to activate / deactivate function. If the beep tone
is unselected there will be no beep when switching on or pressing
side keys.
Factory programmed on Beep enabled
Squelch
The squelch level is used to adjust the threshold at which signals
will open the audio channel. A low level will allow weaker signals
to be audible, although with more background noise. However, if
weak signals are annoying, the level can be adjusted higher to
open the channel only when stronger signals are received.
You can set up the squelch level from 0 to 9. The higher the
squelch level, the less noisy is the signal as only stronger signal
are accepted. The lower the squelch level the noisier the signal
is, as weak signals are also allowed. As the communication range
or obstructions between radios increase, the weaker the signal
becomes. It is advised to use a lower squelch level to get further
communication range.
12 Scrambler
11 Compander
9 PTT ID
Summary of Contents for ZA-758
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