Kenwood AT-130 Antenna Tuner Manual

The Kenwood AT-130 is an automatic antenna tuner designed for amateur radio use, compatible with various Kenwood transceivers. It features automatic tuning, wide frequency coverage from 1.8 to 30 MHz, high power handling capability up to 200W PEP, multiple antenna ports, and remote control functionality. Below are key sections for safety, features, installation, operation, and troubleshooting.

Features at a Glance

Key components: Automatic tuning unit, Control cable, Power connector, Antenna connectors, Remote control capability.

Installation

Unpack and inspect contents. Choose suitable location near transceiver.

1. Connect to transceiver: Use provided control cable between AT-130 and compatible Kenwood radio.
2. Connect antenna: Use appropriate antenna port for your antenna system.
3. Connect power: Use 13.8V DC power source with correct polarity.
4. Ground connection: Ensure proper grounding for safety and performance.

WARNING! Ensure proper ventilation; do not block cooling vents. Use appropriate power supply.

First-Time Setup

Power on tuner; follow initialization procedure.

1. Connect all cables: Ensure transceiver, antenna, and power are properly connected.
2. Power sequence: Turn on transceiver first, then antenna tuner.
3. Initial tuning: Select frequency on transceiver; tuner will automatically match impedance.
4. Verify operation: Check SWR reading on transceiver after tuning.

CAUTION! Do not transmit while tuner is tuning. Wait for tuning completion indicator.

Specifications

• Frequency Range: 1.8-30 MHz
• Power Handling: 200W PEP maximum
• Impedance Range: 16.7 to 150 ohms
• Tuning Time: Typically 3-10 seconds
• Power Supply: 13.8V DC ±15%
• Current Consumption: 0.5A standby, 2A max during tuning
• Antenna Ports: 2 or 3 ports depending on model
• Memory Channels: Stores multiple frequency settings
• Dimensions: Standard rack mount size
• Weight: Approximately 3.5 kg

Controls and Indicators

Front Panel: Power switch, Status LEDs, Antenna selector.

Indicators: Power LED (green), Tuning LED (red), Error LED (flashing red).

Remote Control: Operates through connected transceiver. Tuning: Automatic when frequency changes or manually initiated. Memory: Stores settings for quick recall on frequently used frequencies. Antenna Selection: Switch between multiple antennas if connected.

Connecting Equipment

Transceiver: Use control cable to compatible Kenwood radio. Antenna: Coaxial cable to antenna port. Power: 13.8V DC with correct polarity.

1. Turn off all equipment before connecting.
2. Use quality coaxial cables for antenna connections.
3. Ensure proper grounding for safety.
4. Verify control cable is securely connected.

Tip: Use shortest practical cable runs to minimize loss.

Operation and Tuning

Automatic tuning for optimal SWR.

1. Select frequency on transceiver.
2. Tuner automatically initiates tuning sequence when needed.
3. Monitor tuning LED during process.
4. Verify low SWR after tuning completion.
5. Manual tuning available through transceiver menu if needed.
6. Memory recall for previously tuned frequencies.
7. Antenna switching between multiple antennas.
8. Error detection for tuning failures.

WARNING! Do not transmit during tuning process. Wait for completion indicator.

Maintenance

Regular inspection and cleaning recommended.

Keep unit clean and free of dust. Check connections periodically for corrosion. Ensure ventilation ports are unobstructed. Store in dry environment when not in use.

CAUTION! Disconnect power before cleaning. Use dry cloth only; no liquids.

Regulatory Information

FCC Part 15: Class B digital device; complies with interference limits. CE marked for European compliance. Designed for amateur radio service use. Copyright © Kenwood Corporation. For technical support, contact authorized Kenwood service centers or visit www.kenwood.com.

Troubleshooting

Reset: Power cycle unit to clear temporary errors.

Service: Contact authorized Kenwood service center for repairs.