Kenwood TK-780 Service Manual page 5

Group Up/Down
When this key is pressed each time, the group number to
be selected is increased/decreased and repeats if held for
one second or longer.
Home Channel
Press this key once, the channel switches to the
preprogrammed home channel.
Horn Alert
If you are called from the base station using 5-tone/2-
tone/DTMF/DMS while you are away from your transceiver,
you will be alerted by the vehicle horn or some other type of
external alert. To turn the horn alert function on, press this
key. A confirmation tone sounds. If this key pressed again,
the horn alert function is turned off.
Key Lock
Key lock prevents accidental operation of the transceiver.
When key lock is activated, all keys other that PTT, Emer-
gency, Monitor, Monitor momentary, Shift, Squelch,
Squelch momentary and Volume up/down, are locked.
"LOCKED" appears momentarily when the [Key lock]
key is pressed.
Monitor
• DTMF/2-tone/DMS
When this key pressed once, "MON" icon lights and
squelch unmutes if a carrier is present, regardless of the
specified signalling (including option signalling).
If press again, "MON" icon goes off and squelch mutes.
• 5-tone
Depend on monitor function and monitor key action in
the system parameters.
You can select either QT/DQT or 5-tone decoding to be
canceled when [Monitor] key is pressed. When monitor
function is activated, "MON" icon appears.
Monitor Momentary
• DTMF/2-tone/DMS
While pressing this key, "MON" appears and the squelch
unmutes if a carrier is present, regardless of the specified
signalling (including option signalling).
If released, "MON" disappears, and the squelch mutes.
• 5-tone
Depend on monitor function in the system parameters.
You can select either QT/DQT or 5-tone decoding to be
canceled while pressing [Monitor] key.
When monitor function is activated, "MON" icon ap-
pears.
OPERATING FEATURES
code/decode QT/DQT is switched to the OST tone pair. If
pressed again, the "OST" display goes off and encode/de-
code QT/DQT returns to transceivers preset.
ceiver enters "OST select mode". In this mode, the display
shows OST No. or OST name which is set to the channel
and operator can select one of OST tone pair using [Channel
up], [Channel down] key.
memorized to the channel, the transceiver exits from the
OST select mode, returns to normal channel display and
"OST" display.
operator selectable tone window. While in the OST select
mode, the transceiver does not look back at the priority
channel in the scan resume mode.
puts it through a PA speaker. PA is activated by pressing
this key. A confirmation tone sounds, and the display
shows "PA". PA can be activated at anytime (scanning or
non-scanning).
PA mode. Pressing PTT activated PA, and will override an
incoming call anytime; however no transceiver transmission
takes place.
sound, the display will return to the normal channel or SCAN
display, and the PA function will turn off.
When it is on, you will see the contents of the queue buffer.
You can scroll the queue buffer using the [Channel up],
[Channel down] or [2]/[8] keys on the microphone.
Selcall and Status displays. When you are in Queue mode,
press the [C] or [4] key to toggle the Code and Selcall/Status
displays.
Queue buffer. Hold down the [C] or [4] key to cancel Queue
mode and return to normal operation.
is not canceled unless a proper password is inputted. The
character which can be inputted is to 6 digits with the num-
ber of 0 to 9. A lock is canceled if it is the same as code set
up at "Optional feature - Radio password".
error tone" sounds and the transceiver remains in "LOCK1"
screen.
Operator Selectable Tone
When this key is pressed, the "OST" appears and en-
When this key is held down for one second, the trans-
If pressed this key again, the displayed OST code is
16 kinds of OST tone pairs can be programmed in the
Public Address
Public address amplifies the microphone audio, and out-
The transceiver continues to scan & receive calls while in
If this key is pressed again, a confirmation tone will
Queue
Press [Queue] key to toggle Queue mode on or off.
When you are in Queue mode, [D] or [6] key to toggle the
Hold down the [D] or [6] key to delete the top stack of the
Radio Password
Backup is done even if the power supply is cut off. A lock
If the entered radio password is incorrect, the "Key input
TK-780
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