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Cobra MT645VP User Manual page 4

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Using Your Radio
To Adjust Volume
Press the Volume Up or Volume Down button.
Volume Button
A double beep sound is used to indicate the minimum and maximum volume
levels (1 through 8).
Volume Level
Call Button
Press and release the Call button.
Call Button
The other person will hear a two second call tone. This tone is used only to
establish voice communications.
See page 13 on how to select
between five call tone settings.
To Illuminate Display
Press and release the Light/Max Range button to illuminate the display.
Light/Max Range
Auto Squelch/Maximum Range
Your microTALK
radio will automatically shut off weak transmissions and unwanted noise due to terrain,
®
conditions or if you've reached your Maximum Range limit.
You can temporarily turn off auto squelch or turn on maximum range extender, allowing all signals to
be received and extending the maximum range of your radio.
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English
Using Your Radio
Auto Squelch/Maximum Range continued
To temporarily turn off auto squelch:
Light/Max Range
Press the Light/Max Range button for less than five seconds.
To turn maximum range extender on:
-Press and hold the Light/Max Range button for at least five seconds until
you hear two beeps which indicates the maximum range extender is on.
To turn maximum range extender off:
-Press and release the Light/Max Range button or change channels.
Lock Function
The Lock function locks the Channel Up, Channel Down, Volume Up, Volume
Lock Button
Down and Mode/Power buttons to prevent accidental operation.
To turn the lock on or off:
– Press and hold the Lock button for two seconds.
A double beep sound is used to confirm your lock on or off request.
When in Lock mode, the Lock icon will be displayed.
Lock Icon
Range
MicroTALK
®
Your range will vary depending on terrain and conditions.
In flat, open country your radio will operate at maximum range.
Maximum Range
Buildings and foliage in the path of the signal can reduce
the range of the radio.
Dense foliage and hilly terrain will further reduce the range
Reduced Range
of the radio.
On FRS Channels 8 through 14, your radio automatically switches to low power,
which will limit the range the radio can communicate.
Remember, you can achieve maximum
Reduced Range
range by using maximum range extender.
See page 6 for details.
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