Kenwood TK-280 Service Manual

Also see for TK-280: User manual Instruction manual Instruction manual Pricing and specification manual Service manual

Contents

TK-28011OPERATING FEATURESAND/OROption Signaling match conditions can be selected withAND/OR logic.Alert/Transpond AF Mute OpenAND Triggers at match with QT/ Triggers at match with QT/DQT/ID+DTMF(2tone);Both DQT/ID+DTMF(2tone); BothOR Triggers only for match with Triggers only for match withDTMF (2tone) : Opt QT/DQT/ID;SignalingEven if set for OR, AF mute cannot be canceled just by amatch with DTMF.In channels not set with QT/DQT, signaling is a match justby receiving the carrier.Auto ResetWhen Option Signaling matches on a Group channel whereset to Yes, Option Signaling is canceled when it matches agroup channel set to Yes.After Option Signaling is a match, Option Signaling canautomatically set to Reset after a specified time.Stun/KillIf the Stun code matches, a predetermined action will occur.Whether option signalling is activated or not, when stun codematches on any channel, the transceiver will become stun or kill.While stun is active(“LOCK 2” appears), if the stun code +“#” code is received, stun will disactive.While kill is active(“ERROR” appears), the transceiver willbe disable all functions. The transceiver must be reprogrammedby the FPU(KPG-60D) to operation again.6. Alphanumeric Two-way Paging Function(Digital Message System)n GeneralThe Alphanumeric Two-way Paging Function (DMS) is aKenwood proprietary protocol. It enables a variety of pagingfunctions.n ID ConstructionA radio unit ID is defined by a combination of 3-digit Fleetand 4-digit ID numbers. Each radio unit must be assigned itsown Fleet and ID numbers.n Digital Message System[DMS]l Inter-fleet CallInter-Fleet Calls allow a radio of one Fleet number to call aradio with a different Fleet number (radio users can manuallydial a Unit ID with a different Fleet number).n PTT IDA pre-programmed unique ID can be sent at the beginningof transmission and/or the end of transmission to identify whichradio unit is on air.n Selective Call (SELCALL)This is a voice call to a particular individual or group of stations.l Example of call types;[100][ALL ] : All the units whose fleet number is “100” are called.[100][1000] : The unit, whose the fleet number is “100” and ID number is“1000”, is called.[ALL][ALL ] : All the units are called.[ALL][1000] : All ID “1000” are called regardless of their fleet number.l Unit ID Encode BlockEncode ID Block can be set to limit manual dial ID. Theradio unit will not accept an ID other than these IDs whichare entered from the keypad. If Inter-fleet Call is enabled,block ID setting affects each fleet group.n Status MessageUsing a 2-digit number, you can send and receive a Statusmessage which may be decided in your talk group. Each Statusmay be displayed with 16 alphanumeric characters ifprogrammed in the radio. A maximum of 15 received messagescan be stored in the stack memory, and it can be reviewedafter reception. If the message memory becomes full, the oldestone will be erased. The stack memory will be cleared by turningradio power off.l Status 80~99 (Special)Status numbers from 80 to 99 are reserved for specialpurposes. Entering these statuses from the DTMF keypadcan be inhibited.Please notice that the following status numbers are usedfor special purposes;80~89 : Reserved for future use.90 : Remote kill on. Disable all transceiver functions.91 : Remote stun on. The transceiver cannot operate.92 : Turns stun off.93 : Spare.94 : Acknowledgement status sent when the radio unit is instun mode.95~98 : Reserved for future use.99 : Emergency Status.Note : Remote stun works with DTMF stun function also.l Automatic Status ResponseIf you pre-select a status number and leave the radio in theStatus Mode, it can automatically respond with the selectedstatus number upon request from the base station. (Therequest function is initiated by serial control on the basestation (Optional).)