Kenwood AT 130 Manual

The Kenwood AT 130 is a high-performance antenna tuner designed for amateur radio use, featuring automatic tuning capability, wide frequency coverage from 1.8 to 30 MHz, robust construction, LED status indicators, memory function for frequently used frequencies, and compatibility with various antenna types. Below are key sections for safety, features, installation, setup, operation, and troubleshooting.

Features at a Glance

Key components: Automatic antenna tuner, LED status indicators, Memory banks, Transceiver interface, Antenna connectors, Power supply input.

Feature	Description
Automatic Tuning	Automatically matches antenna impedance to transceiver
Frequency Range	1.8 to 30 MHz coverage
Memory Function	Stores tuning data for up to 100 frequencies
LED Indicators	Shows tuning status and operational mode
Antenna Connectors	Multiple connectors for various antenna types
Power Input	13.8V DC operation
TUNING Button	Initiates automatic tuning sequence
MEMORY Button	Stores and recalls frequency settings
BYPASS Switch	Bypasses tuner for direct connection
POWER Switch	Turns unit on/off

Installation

Unpack and inspect contents. Place on stable surface near transceiver.

1. Connect to transceiver: Use appropriate interface cable between tuner and radio.
2. Connect antenna: Attach antenna feedline to antenna connector.
3. Connect power: Use supplied power cable to 13.8V DC source.
4. Ground connection: Ensure proper grounding for safety and performance.

WARNING! Ensure proper ventilation; do not block cooling vents. Use appropriate fusing for power connections.

First-Time Setup

Power on tuner; follow initialization procedure.

1. Initial tuning: Press TUNING button to initiate first automatic tune.
2. Memory setup: Store frequently used frequencies using MEMORY button.
3. Interface configuration: Ensure proper communication with transceiver.
4. Antenna verification: Confirm antenna connection and SWR readings.

CAUTION! Do not transmit during tuning process. Ensure proper antenna connection before operation.

Specifications

• Frequency Range: 1.8 - 30 MHz
• Tuning Speed: Typically 3-5 seconds
• Power Handling: Up to 200W PEP
• Impedance Range: 16.7 to 150 ohms
• Memory Capacity: 100 channels
• Power Requirement: 13.8V DC ±15%
• Current Consumption: Standby: 50mA, Tuning: 1.5A max
• Connectors: SO-239, Power terminal, Control cable
• Dimensions: 240(W) × 80(H) × 240(D) mm
• Weight: 2.5 kg

Controls and Settings

Front Panel: POWER switch, TUNING button, MEMORY button, BYPASS switch, LED indicators.

LED Indicators: POWER (green), TUNING (orange), MEMORY (green), ERROR (red).

Tuning Modes: Automatic tuning initiated by TUNING button or transceiver PTT. Memory Functions: Store and recall tuning settings for specific frequencies. Bypass Mode: Direct connection between transceiver and antenna.

Connecting Equipment

Transceiver: Use control cable interface. Antenna: SO-239 connector. Power: 13.8V DC input.

1. Turn off all equipment before making connections.
2. Connect control cable between tuner and transceiver.
3. Attach antenna feedline to antenna connector.
4. Connect power cable to 13.8V DC source with proper polarity.
5. Establish good ground connection.

Tip: Use high-quality coaxial cables for best performance.

Operation

Automatic tuning for optimal antenna matching.

1. Select frequency on transceiver.
2. Press TUNING button or key transceiver to initiate tuning.
3. Wait for tuning completion (LED indicates when finished).
4. Transmit normally - tuner maintains match automatically.
5. Use MEMORY button to store current frequency setting.
6. Recall stored settings by selecting frequency and pressing MEMORY.

WARNING! Do not touch antenna or connectors during transmission. Allow tuning cycle to complete before transmitting.

Memory Functions

Memory stores tuning parameters for quick recall.

Storing Memory: Tune to desired frequency, press and hold MEMORY until LED flashes, then release.

Recalling Memory: Select frequency, briefly press MEMORY - tuner recalls stored settings.

Clearing Memory: Factory reset procedure clears all memory locations.

Care & Maintenance

Keep unit clean and dry. Periodically check connections for corrosion.

CAUTION! Disconnect power before cleaning. Use compressed air to remove dust from connectors.

Regulatory Information

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

Troubleshooting

Symptom	Possible Cause	Corrective Action
Unit not powering on	Power connection/fuse	Check power cable connection; verify fuse integrity; ensure proper voltage.
Tuning fails	Antenna/SWR	Verify antenna connection; check for proper ground; ensure SWR within range.
Memory not storing	Procedure/button	Follow memory storage procedure correctly; ensure MEMORY button functioning.
High SWR after tuning	Antenna/connections	Check antenna system; verify all connections tight; inspect coaxial cables.
No communication with transceiver	Control cable	Verify control cable connection; check transceiver interface settings.

Reset: Disconnect power for 30 seconds to reset microprocessor.

Service: Contact authorized Kenwood service center for repairs.