To Next PageTo Next Page
Need help?Do you have a question about the Kenwood TRC-80 and is the answer not in the manual?
Precautions for personnel safety during operation and servicing.
Explains dealer mode for customizing user functions like frequency, power, and settings.
Step-by-step guide for installing the AT unit (KAT-2).
Instructions for installing the selective call unit (KPE-1).
Details the receiver circuit configuration, including IF stages and filters.
Details the PLL circuit configuration, including reference oscillator and LO loops.
Explains the DDS IC configuration and its registers.
Describes the squelch circuit and its integration with the CPU.
Describes the transmitter circuit configuration, from microphone input to antenna output.
Overview of the digital control circuit involving the microcomputer and EEPROM.
Describes the reset circuit that monitors Vcc and outputs a reset signal.
Details EEPROM usage for adjustment data and memory channels.
Explains the serial interface for TTL level communication and data format.
Describes the PLL and DDS control circuit, with frequency data output from the microcomputer.
Describes AT unit control signals, including variable condenser position and rotation.
Explains how data is stored and backed up using microcomputer and EEPROM.
Describes the encoder circuit and pulse counting by the microcomputer.
Describes the key scan function and software control of switches.
Details control signals sent from the microcomputer to the TX-RX unit.
Explains selective call unit control signals based on KPE-1 installation.
Pinout and description for the microprocessor IC5.
Pinout and description for the MSM82C55AFP-2 IC7.
Details I/O port expansion for the TC9174F IC15.
Details I/O port expansion for the TC9174F IC16.
Details band data decoding for the Final Unit IC4.
Details I/O port expansion for the TX-RX unit IC10.
Details the D/A converter IC13 for the TX-RX unit.
General