Kenwood TK-780 Service Manual

Also see for TK-780 series: Programming instructions Instruction manual Service manual supplement Service manual Instruction manual

5TK-780 Group Up/DownWhen this key is pressed each time, the group number tobe selected is increased/decreased and repeats if held forone second or longer. Home ChannelPress this key once, the channel switches to thepreprogrammed home channel. Horn AlertIf 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 ofexternal alert. To turn the horn alert function on, press thiskey. A confirmation tone sounds. If this key pressed again,the horn alert function is turned off. Key LockKey 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] keyis pressed. Monitor• DTMF/2-tone/DMSWhen this key pressed once, "MON" icon lights andsquelch unmutes if a carrier is present, regardless of thespecified signalling (including option signalling).If press again, "MON" icon goes off and squelch mutes.• 5-toneDepend on monitor function and monitor key action inthe system parameters.You can select either QT/DQT or 5-tone decoding to becanceled when [Monitor] key is pressed. When monitorfunction is activated, "MON" icon appears. Monitor Momentary• DTMF/2-tone/DMSWhile pressing this key, "MON" appears and the squelchunmutes if a carrier is present, regardless of the specifiedsignalling (including option signalling).If released, "MON" disappears, and the squelch mutes.• 5-toneDepend on monitor function in the system parameters.You can select either QT/DQT or 5-tone decoding to becanceled while pressing [Monitor] key.When monitor function is activated, "MON" icon appears. Operator Selectable ToneWhen this key is pressed, the "OST" appears and encode/decode QT/DQT is switched to the OST tone pair. Ifpressed again, the "OST" display goes off and encode/de-code QT/DQT returns to transceivers preset.When this key is held down for one second, the trans-ceiver enters "OST select mode". In this mode, the displayshows OST No. or OST name which is set to the channeland operator can select one of OST tone pair using [Channelup], [Channel down] key.If pressed this key again, the displayed OST code ismemorized to the channel, the transceiver exits from theOST select mode, returns to normal channel display and"OST" display.16 kinds of OST tone pairs can be programmed in theoperator selectable tone window. While in the OST selectmode, the transceiver does not look back at the prioritychannel in the scan resume mode. Public AddressPublic address amplifies the microphone audio, and out-puts it through a PA speaker. PA is activated by pressingthis key. A confirmation tone sounds, and the displayshows "PA". PA can be activated at anytime (scanning ornon-scanning).The transceiver continues to scan & receive calls while inPA mode. Pressing PTT activated PA, and will override anincoming call anytime; however no transceiver transmissiontakes place.If this key is pressed again, a confirmation tone willsound, the display will return to the normal channel or SCANdisplay, and the PA function will turn off. QueuePress [Queue] key to toggle Queue mode on or 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.When you are in Queue mode, [D] or [6] key to toggle theSelcall and Status displays. When you are in Queue mode,press the [C] or [4] key to toggle the Code and Selcall/Statusdisplays.Hold down the [D] or [6] key to delete the top stack of theQueue buffer. Hold down the [C] or [4] key to cancel Queuemode and return to normal operation. Radio PasswordBackup is done even if the power supply is cut off. A lockis not canceled unless a proper password is inputted. Thecharacter 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 setup at "Optional feature - Radio password".If the entered radio password is incorrect, the "Key inputerror tone" sounds and the transceiver remains in "LOCK1"screen.OPERATING FEATURES