ICOM AT-130 Automatic SSB Antenna Tuner

1. Introduction

The ICOM AT-130 is an automatic antenna tuner designed to efficiently match your SSB transceiver to a long wire or whip antenna. It ensures optimal power transfer with minimal insertion loss, enhancing your radio communication performance.

Key features include:

• For use with Icom SSB Radios
• Matches radio to antenna impedance
• Waterproof enclosure
• Specifically designed for the M-700 SSB Radio

2. What's in the Box

Upon opening the package, please verify that all components are present:

• Antenna tuner (ICOM AT-130)
• Mounting bracket (if applicable, implied by image)
• Instruction manual (this document)

Figure 2.1: The ICOM AT-130 Automatic SSB Antenna Tuner. This image shows the compact, grey, rectangular unit with its mounting bracket and two coaxial connectors on the side, designed for outdoor installation.

3. Setup and Installation

The AT-130 is designed for outdoor installation due to its waterproof enclosure. Proper installation is crucial for optimal performance and longevity.

1. Mounting: Securely mount the AT-130 in a suitable outdoor location, preferably close to the antenna feed point. Use the provided mounting bracket and appropriate hardware. Ensure the mounting surface is stable and can support the unit's weight (approximately 3.27 pounds).
2. Antenna Connection: Connect your long wire or whip antenna to the designated antenna terminal on the AT-130. Ensure a good, weather-sealed connection.
3. Transceiver Connection: Connect the AT-130 to your Icom SSB transceiver (e.g., M-700PRO) using a coaxial cable. Refer to your transceiver's manual for specific connection points. The AT-130 typically connects between the transceiver's antenna output and the antenna itself.
4. Control Cable Connection: Connect the control cable from the AT-130 to your Icom SSB transceiver. This cable provides power and tuning control signals to the tuner.
5. Grounding: For safety and optimal performance, ensure the AT-130 and your antenna system are properly grounded according to local electrical codes and radio communication best practices.

Note: Always power off your transceiver before making or changing any connections to prevent damage to the equipment.

4. Operating Instructions

The ICOM AT-130 is an automatic antenna tuner, simplifying the tuning process. Once properly installed and connected, it will automatically match the impedance of your antenna system to your transceiver.

1. Power On: Turn on your Icom SSB transceiver. The AT-130 receives power and control signals directly from the transceiver.
2. Initiate Tuning: When you transmit on a new frequency or if the SWR (Standing Wave Ratio) is high, the AT-130 will automatically begin its tuning cycle. This process typically involves the tuner adjusting its internal components to achieve the lowest possible SWR.
3. Monitor SWR: Observe the SWR meter on your transceiver. The AT-130 aims to achieve an SWR close to 1:1 for efficient power transfer. The tuning process is usually quick.
4. Memory Function: The AT-130 often has a memory function, allowing it to recall tuning settings for previously used frequencies, speeding up the tuning process on subsequent transmissions.

For detailed operation specific to your Icom SSB transceiver, please consult its respective user manual.

5. Maintenance

The ICOM AT-130 is designed for durability and requires minimal maintenance due to its waterproof enclosure.

• Regular Inspection: Periodically inspect the unit and all cable connections for any signs of wear, corrosion, or damage, especially after severe weather conditions.
• Cleaning: If necessary, gently clean the exterior of the unit with a soft, damp cloth. Do not use harsh chemicals or abrasive cleaners.
• Connection Integrity: Ensure all coaxial and control cable connections remain tight and free of moisture.

Do not attempt to open the unit, as this may void the warranty and expose internal components to environmental damage.

6. Troubleshooting

If you encounter issues with your AT-130, consider the following common troubleshooting steps:

• Tuner Not Tuning:
  • Check all cable connections between the AT-130, transceiver, and antenna. Ensure they are secure and not damaged.
  • Verify that the control cable is properly connected and providing power to the AT-130.
  • Ensure your transceiver is set to the correct mode for tuning (e.g., transmit mode).
• High SWR After Tuning:
  • Inspect your antenna system for any physical damage or shorts.
  • Ensure the antenna is appropriate for the frequency range you are operating on.
  • Check the coaxial cable connecting the tuner to the antenna for damage or poor connections.
• No Power to AT-130:
  • Confirm the transceiver is powered on.
  • Check the control cable for continuity and proper connection at both ends.

If problems persist after attempting these steps, contact ICOM customer support or a qualified service technician.

7. Specifications

8. Warranty and Support

The ICOM AT-130 Automatic SSB Antenna Tuner is covered by ICOM's standard manufacturer warranty. For specific warranty terms and conditions, please refer to the warranty card included with your product or visit the official ICOM website.

For technical support, service, or to purchase accessories, please contact ICOM customer service or visit their official website:

Visit the Official ICOM Store on Amazon