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NOTE:
Do not mix old and new batteries.
Do not mix alkaline, standard, or rechargeable batteries.
Batteries may not be charged in ambient temperature
above 45 °C or 113 °F.
3.2 Switching the headset on and off
Press and hold the On/Off/Mode button (A:9) until a
message is heard to switch the headset on or off. The
voice message will confirm that the unit has been switched
on or off. The last setting is always saved when the
headset is switched off.
NOTE: Power is switched off automatically if the product
has been inactive for two hours. Automatic power-off is
indicated by a voice message: "automatic power off"
followed by a series of short tones for 10 seconds, then the
unit is switched off.
3.3 Automatic power off
After two hours (from the last button press or VOX
transmission) the headset will automatically power off.
3.4 Scrolling through the menu
Press the On/Off/Mode button (A:9) to browse through the
following menu items:
3.5 Radio volume (level)
Press the (+) button (A:10) or (–) button (A:11) to adjust the
volume to one of five levels. To turn the volume off, press
the (–) button for two seconds. This is confirmed by the
message "radio volume off". Press the (+) button to switch
this function back on.
NOTE: No radio communication can be heard when the
volume is switched off.
NOTE: When the volume is switched off, all other radio
configuration menus will be unavailable.
3.6 Channel (radio frequency)
No.
MHz
1
446.00625
2
446.01875
3
446.03125
4
446.04375
5
446.05625
6
446.06875
8
446.09375
Press the (+) button (A:10) or (–) button (A:11) to select
between 8 available channels, see Radio Frequency Table.
3.7 VOX (voice-operated transmission)
VOX is a hands-free substitute for the Push-To-Talk (PTT)
button. With VOX, you simply speak into the microphone to
open the channel. The VOX setting defines the acoustic
threshold that activates the radio transmission. Higher
settings are appropriate for louder environments. To adjust
the sensitivity of VOX, press the (+) button (A:10) or (–)
button (A:11) when on the VOX menu setting. You can
choose between five levels or switch this function off. To
turn the VOX function on and off, press the PTT button
twice. Alternatively, when on the VOX setting in the menu,
press the (–) button for two seconds to turn VOX off. Press
the (+) button to switch this function back on. If VOX is off,
the PTT button must be used to transmit.
NOTE: By default, the Busy Channel Lock Out (BCLO)
function will prevent VOX operation if the channel is
occupied with other transmission ("busy") and you will hear
an audible tone to indicate the blocked transmission.
These settings can be adjusted in the setup menu.
NOTE: To effectively use VOX, the speech microphone
(A:8) must be very close to your mouth, less than 3 mm
(1/8 inch). You will hear your voice in the headset when the
radio is transmitting.
3.8 Squelch (hiss reduction)
The "squelch" feature will reduce the distracting radio hiss
or static noise. You can choose between five squelch levels
by pressing the (+) button (A:10) or (–) button (A:11). A
higher squelch level will further reduce the noise, but will
also reduce your range of reception. To switch this function
off, press the (–) button for two seconds. Press the (+)
button to switch this function back on.
3.9 Sub channel (selective squelch)
1.
15.
67.0
2.
71.9
16.
3.
17.
74.4
4.
77.0
18.
5.
19.
79.7
6.
82.5
20.
7.
85.4
21.
8.
88.5
22.
9.
91.5
23.
10.
94.8
24.
11.
97.4
25.
12.
100.0
26.
13.
103.5
27.
14.
28.
107.2
The sub channel feature can be used to set up multiple
private groups within a single channel. When the sub
channel feature is active, an inaudible code will be
transmitted with the speech and only the receivers with the
same sub channel setting will hear the transmission.
EN
29.
110.9
179.9
114.8
30.
186.2
31.
118.8
192.8
123.0
32.
203.5
33.
127.3
210.7
131.8
34.
218.1
136.5
35.
225.7
141.3
36.
233.6
146.2
37.
241.8
151.4
38.
250.3
156.7
162.2
167.9
173.8
4
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