Kenwood TK-790 Service Manual

Also see for FleetSync TK-790: Specifications Instruction manual Specifications Instruction manual

11TK-790/(B)/H(B)25. Busy Channel Lockout (BCL), BCL OverrideT h e B u s y C h a n n e l L o c k o u t f u n c t i o n p r e v e n t sinterferance with other stations that may be using the samechannel.While the selected channel is in use, pressing PTTcauses the RADIO to sound a warning tone, and transmis-sion is inhibited. To stop the warning tone, release PTT.If BCL Override has been enabled, pressing PTT within500msec again will cancel BCL, and transmission is en-abled.26. 2Tone Signalling2Tone signalling opens the squelch only when the RA-DIO receives a proper 2Tone code that is the same as thepre-programmed 2Tone for the channel. When the RADIOreceives a 2Tone code, the CALL icon flashes.If Transpond has been programmed, the RADIO will re-turn an acknowledgment signal automatically after receivingthe 2Tone code.If Call Alert has been programmed, an Alert Tone soundsafter receiving a 2Tone code. You can configure “Normal”(an alert tone beeps once) or “Continuous” (an alert tonebeeps every 5 seconds) for the Call Alert. Unmute conditionis canceled and the CALL icon goes off when ; (1) pressingthe [MON] Key, (2) hanging the microphone on its hook, (3)muting continues for 10 seconds. (If “Auto Reset” has beenprogrammed)27. DTMF SignallingDTMF Signalling opens the squelch only when the RA-DIO receives a proper DTMF code that is the same as thepre-programmed “Primary Code (Individual ; 1~7digits)” or“Secondary Code (Group ; 1~7digits)”. When the RADIO re-ceives a correct code, the CALL icon flashes.If Transpond has been programmed, the RADIO will re-turn an acknowledgment signal automatically after receivingthe DTMF code.If Call Alert has been programmed, an Alert Tone soundsafter receiving a DTMF code. You can configure “Normal”(an alert tone beeps once) or “Continuous” (an alert tonebeeps every 5 seconds) for the Call Alert. Unmute conditionis canceled and the CALL icon goes off when ; (1) pressingthe [MON] Key, (2) hanging the microphone on its hook, (3)muting continues for 10 seconds (If “Auto Reset” has beenprogrammed), and (4) receiving reset code. (Primary code +“#” or secondary code + “#”)28. Time Out Timer(Possible to configure to each group)The Time Out Timer function interrupts continuous trans-mission after a specified time elapses.Holding down PTT for longer than the programmed timecauses the RADIO to stop transmitting and sound a warningtone. To stop the warning tone, release PTT.29. Signalling AND/OR(Possible to configure to each group)The RADIO will be unmuted with a combination of QT/DQT and 2Tone/DTMF. The AND/OR setting works as fol-lows.29-1. ANDThe audio is unmuted when the RADIO receives the cor-rect QT/DQT and 2Tone/DTMF. After transmitting, 2Tone/DTMF will be canceled.29-2. ORThe audio is unmuted when the RADIO receives the cor-rect QT/DQT. 2Tone/DTMF is used just as an individual callor group call.30. Off Hook DecodeIf the OFF HOOK Decode function has been enabled, re-moving and replacing the microphone on the HOOK has noeffect for decoding QT/DQT and 2Tone/DTMF.31. TX Audio Monitor; Dual Head Configuration onlyThis function allows the radio operator to hear anotheroperator’s voice which is transmitted through another con-trol head.If the TX Audio Monitor function is set to “w/Talk Inter-rupt” and one operator is transmitting, the other operator’scontrol head displays “INTERCOM” and he/she can speakto the transmitting control head by pressing PTT.32. Roll Over/Dead End32-1. Roll OverWhen [ ] (CH UP) is pressed, or the CH UP/DOWN Knobis turned CW from the Maximum channel, the channelchanges to the Minimum channel.When [ ] (CH DOWN) is pressed, or the CH UP/DOWNKnob is turned CCW from the Minimum channel, the chan-nel changes to the Maximum channel.32-2. Dead EndWhen [ ] (GR UP) is pressed, or the GR UP/DOWN Knobis turned CW from the Maximum group, the group doesn’tchange.When [ ] (CH UP) is pressed, or the CH UP/DOWN Knobis turned CW from the Maximum channel, the channeldoesn’t change.When [ ] (GR DOWN) is pressed, or the GR UP/DOWNKnob is turned CCW from the Minimum group, the groupdoesn’t change.When [ ] (CH DOWN) is pressed, or the CH UP/DOWNKnob is turned CCW from the Minimum channel, the chan-nel doesn’t change.< >OPERATING FEATURES< >< >