Icom IC-AT500 - User Manual

Details semiconductor count, frequency range, power, and impedance.

Covers tune-up power, time, accuracy, and insertion loss.

Lists power supply, usable conditions, dimensions, and weight.

Explains the rapid tuning mechanism using motors and capacitors.

Describes automatic band selection with compatible transceivers.

Details the ability to preset matching circuits for bands for quick QSY.

Explains the functionality and automatic selection of multiple antenna ports.

Mentions the tuner's compatibility with both AC and DC power sources.

Instructions for unpacking the tuner and checking for shipping damage.

Advises on optimal placement considering environment and accessibility.

Guides on connecting the tuner to AC or DC power sources.

Shows internal wiring adjustments for different AC input voltages.

Explains the procedure for connecting the tuner to a DC power supply.

Details how to connect the tuner with transceivers and amplifiers.

Wiring diagram for a specific ICOM transceiver and amplifier setup.

Wiring diagram for a specific ICOM transceiver setup.

Wiring diagram for a specific ICOM transceiver setup with LDA unit.

Connection diagram for using the tuner with non-ICOM transceivers.

Details the four antenna terminals and their frequency band assignments.

Instructions for changing internal wiring for different antenna configurations.

Describes how to install an optional SO-239 coaxial connector.

Discusses tuner effectiveness with various antennas and SWR conditions.

Graph illustrating SWR measurements across different frequencies.

Graphs and tables showing coaxial cable loss due to high SWR.

Identifies and explains front panel switches and indicators like Power, Tuner, Band, Wait, and Auto Tune.

Details rear panel connectors for RF input, antennas, accessories, power, and ground.

Explains the AUTO TUNE/PRESET switch, trimmers, and indicators found inside.

Step-by-step guide for presetting the tuner for optimal band matching.

Troubleshooting steps when the automatic tuning function fails to operate.

Troubleshooting reduced output due to transceiver protection activation.

Visual guide illustrating the preset operation process and decision points.

Important warnings to ensure correct operation and prevent damage to the unit.

Further warnings regarding switch timing, SWR, and coaxial cable usage.

Instructions for cleaning the set and replacing internal fuses.

Identifies internal components of the IC-AT500 from top and side perspectives.

Shows IC-AT100 internal layout and details accessory socket pinouts.

Explains the overall tuner design and its main functional blocks.

Details the matching circuit and how resistance/reactance are detected.

Presents a diagram of the resistance and reactance detecting circuit.

Explains the main control circuit and the preset control circuit logic.

Details the rotary switch, WAIT, and BAND switch control circuits.

Visual representation of the band switching logic and control voltage chart.

Explains the operation of the AC/DC power supply and DC/DC converter.

Provides a comprehensive block diagram of the entire antenna tuner system.