Kenwood TK-90 Car Stereo System User Manual


 
17
ADVANCED OPERATIONS
DIRECT CHANNEL
Your dealer can program up to 4 keys to allow you to
quickly and easily jump to a frequently used channel.
Press the keys programmed as Direct CH 1 to Direct
CH 4 to select the memory channels they have been
programmed to access.
SCRAMBLER
If your dealer has installed an optional scrambler
board, you can make private calls to others. Although
the scrambler function does not offer complete
privacy with your calls, it does prevent others from
easily listening in on your calls. When activated, the
transceiver distorts your voice so that anybody
listening to your conversation will be unable to clearly
hear what you are saying.
In order for members of your own group to clearly
hear your call while you are using the scrambler, all
other members must have the same scrambler code
set up on their transceivers. This distorts everybody’s
voice while transmitting and corrects the voice
message on your own transceiver when you receive
the call.
To activate the scrambler, press the key programmed
as Scrambler.
The icon appears on the display while the scrambler
is active.
VOX (VOICE-OPERATED TRANSMIT) SETUP
VOX eliminates the need of manually switching to
transmit mode each time you want to make a call.
The transceiver automatically switches to transmit
when the VOX feature senses that you have begun
speaking into the microphone.
You can switch the VOX feature ON and OFF by
pressing the key programmed as VOX or by
accessing Menu No. 6 {page 11}.
When VOX is activated, the VOX icon
(
) appears on the display.
To deactivate the scrambler, press the Scrambler
key again.
CHANGING THE SCRAMBLER CODE
It is possible to change the pre-set scrambler code on
a channel:
1 Press and hold the key programmed as
Scrambler for approximately 1 second.
2 Press the <C or D> key to select a new code (from
1 to 16).
3 Press the key to store the new code and exit.
Note: If the scrambler memory is not enabled by your dealer,
changing the channel or turning the transceiver power OFF will
reset your scrambler code to the default setting.
To properly use the VOX feature, you must properly
set up the VOX Gain, Anti-VOX Gain, and VOX Delay
Time for your environment {see below}.
VOX GAIN
This setting allows the transceiver to recognize sound
levels. If the VOX Gain is too low, the microphone
will not pick up your voice when you begin speaking.
Be sure to adjust the VOX Gain level to an
appropriate sensitivity to allow smooth transmission.
Sensitivity levels range from 1 to 9.
You can set the VOX Gain by pressing the key
programmed as VOX Gain or by accessing Menu
No. 8 {page 11}.
ANTI-VOX GAIN
VOX operation is sometimes difficult when using high
speaker volumes. Adjust this control to reduce the
tendency of the transceiver to switch into transmit
mode due to the speaker output. Use the minimum
Anti-Gain level to achieve reliable VOX operation.
Anti-Gain levels range from 0 to 9.
You can set the Anti-VOX Gain by pressing the key
programmed as Anti-VOX Gain or by accessing
Menu No. 9 {page 11}.