Kenwood TK-280 Service Manual

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

TK-28011OPERATING FEATURES/REALIGNMENT• Group Call ToneThe group call tone informs the user of a group call in DTMF/2Tone Option Signaling. This tone repeats 7 times.• Individual ToneIndividual tone is issued on receiving selective call by DTMF/2 Tone Option Signaling.• Intercept tone (Trunking Format)This tone indicates that the transceiver is out of range. Itindicates that the PTT button is pressed, and transmission hasstarted, but the repeater cannot be connected and talking isnot possible. It is output until the PTT button is released. (Themid tone and low tone are output alternately in 200ms intervals.)• Delay tone (Trunking Format)This tone is output when the PTT button is pressed and therepeater is accessed three times or more to indicate connectionwith the repeater is delayed. This tone is the same as the busytone. (It is not output of CLEAT TO TALK has been set toYES.)• Proceed tone (Trunking Format)This tone is output when the PTT button is pressed,transmission starts, and the repeater is connected to indicatethat the user can talk if the Clear-to-talk function has been set.(The high tone is output for 100ms.)• Queue tone (Trunking Format)This tone is output until the Auto TEL function is set and theTEL channel is accepted successfully. (The mid tone on for50ms, off for 50ms, and on for 50ms in 1 second intervals.)• Deny tone (Trunking Format)This tone is output if the Auto TEL function is set, the queuetone is output, but the TEL channel cannot be accessed within60 seconds. It is similar to the intercept tone. (The mid toneand low tone are output alternately in 150ms intervals.)• Free system ringback mode tone, system search modetone (Trunking Format)This tone indicates that the transceiver is free systemringback mode or system search mode. (The low tone is outputfor 400ms.)• Ringing tone (Trunking Format)This tone indicates that the transceiver can use the repeaterin free system ringback mode. (The mid tone and no tone areoutput eight cycles alternately in 50ms intervals.)• Pre Alert tone (Conventional Format)Informs user when nearing transmit inhibit (transmit cutoff)time due to TOT.The Pre Alert Tone is issued from the time set for TOT PreAlert until the TOT triggers.1. ModesREALIGNMENT2000Hz 2000Hz 2000Hz100ms 100ms 100ms 100ms 100ms770Hz 770Hz30ms 30ms 30ms1633Hz 1633Hz 1633Hz50ms 50ms 50ms 50ms 50msMode FunctionUser mode For normal use.Panel test mode Used by the dealer to check thefundamental characteristics.Panel tuning mode Used by the dealer to tune the radio.PC mode Used for communication between theradio and PC (IBM compatible).Data program- Used to read and write frequency dataming mode and other features to and from the radio.PC test mode Used to check the radio using the PC.This feature is included in the FPU.See panel tuning.Firmware program- Used when changing the mainming mode program of the flash memory.Clone mode Used to transfer programming datafrom one radio to another.Self programming Frequency, signalling and featuresmode (Conventional write to the radio.Format)User modePanel test modePC modeFirmwareprogramming modeClone modeSelf programmingmode (ConventionalFormat)Panel tuning modePC test modeData programmingmodePC tuning mode