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General| Brand | Kenwood |
|---|---|
| Model | TK-890H(B) |
| Category | Transceiver |
| Language | English |
Manual preparation disclaimer regarding errors, omissions, and right to make changes.
Defines the manual's intended audience and scope for service information.
Provides essential safety precautions for personnel working with the equipment.
Information regarding radio servicing procedures and maintenance.
Details connecting and installing the KCH-10 and KCH-11 front panel kits.
Explains how to use the optional voice scrambler feature and its settings.
Details connecting and using the optional ANI board for functions.
Describes connecting the KCT-18 for ignition sense and timed power off functions.
Instructions for connecting the KES-4 external speaker to the radio.
Details on configuring the horn alert function for notifications.
Describes the functions of accessory terminal ports like D-SUB 25-pin.
Procedures for connecting remote kits KRK-5, KRK-6DH, KRK-7DB, KRK-8DBH.
Step-by-step guide for disassembling the TK-890/(B) radio unit.
Step-by-step guide for disassembling the TK-890H(B) radio unit.
Steps for disassembling the control unit (X57-562 B/3) from the radio.
Procedure for removing the accessory connector from the rear of the unit.
Steps for disassembling the KCH-10 display unit (X54-3190).
Steps for disassembling the KCH-11 display unit (X54-3200).
Explains the functional blocks of the radio's transmitter circuit.
Details the operational blocks of the radio's receiver circuit.
Explains the squelch circuit's operation based on signal and noise levels.
Description of the Voltage Controlled Oscillator and Phase-Locked Loop circuit.
Describes the control unit's circuitry, including CPU and peripheral functions.
Explains the radio's power supply circuit and its protection features.
Details the circuits for encoding and decoding radio signaling information.
Description of the circuitry for the KCH-10 display unit.
Description of the circuitry for the KCH-11 display unit.
Diagrams illustrating the assembly of the TK-890/(B) radio unit.
Diagrams illustrating the assembly of the TK-890H(B) radio unit.
Diagrams illustrating the assembly of the KCH-10 display unit.
Diagrams illustrating the assembly of the KCH-11 display unit.
Instructions for properly packing the TK-890/(B) for shipment.
Instructions for properly packing the TK-890H(B) for shipment.
Instructions for properly packing the KCH-10 unit.
Instructions for properly packing the KCH-11 unit.
Procedure for entering and using the panel test mode for measurements.
Procedure for entering and using the panel tune mode for radio adjustments.
List of necessary test equipment for radio alignment procedures.
Frequency ranges and settings for various radio models and bands.
Details radio settings for receiver and transmitter adjustments.
Steps for adjusting the radio's transmit frequencies for optimal performance.
Procedure for adjusting Band Pass Filters for frequency response tuning.
Adjusting the Monolithic Crystal Filter for band flatness.
Procedures for measuring and adjusting audio distortion levels.
Steps for adjusting the radio's RF power output.
Procedure for adjusting the maximum frequency deviation of the radio.
Steps for adjusting the microphone sensitivity levels.
Procedure for adjusting the Digital Tone Squelch balance.
Steps for adjusting the Tone Squelch deviation.
Steps for adjusting the Digital Tone Squelch deviation.
Procedure for adjusting the DTMF deviation.
Procedure for adjusting the MSK deviation.
Steps for adjusting the receiver sensitivity levels.
Setting the squelch threshold for tight operation.
Setting the squelch threshold for open operation.
