Icom AH-6 Antenna Tuner for Long Wire and 50 Ohm Antennas

The Icom AH-6 automatic antenna tuner is designed for amateur radio operators who want to efficiently match various antenna setups to their Icom transceiver. This compact remote ATU supports both longwire antennas and unbalanced 50 ohm antennas, and has a frequency range of 1.8 to 54 MHz. This makes the AH-6 a versatile solution for use from 160 to 6 meters.

An important advantage of this automatic antenna tuner is its installation location. The AH-6 is mounted directly at the antenna's feed point. This means that matching takes place where it is technically most effective. Especially with a longwire antenna, this can help to reduce losses in the feed line and use the antenna system more efficiently.

One ATU for longwire and 50 ohm antennas

The Icom AH-6 features separate connection options for a longwire antenna and an unbalanced 50 ohm antenna. A selector switch determines which type of antenna is used. This allows the tuner to be used with various antenna configurations, including suitable longwire, vertical, and dipole antennas.

For a longwire antenna, according to the supplied specifications, a wire length of at least 30 meters supports the full range of 1.8 to 54 MHz. With a minimum of 7 meters of wire, it can operate from 3.5 to 54 MHz.

When using a connected 50 ohm antenna, the tuner can match a load impedance of approximately 16.7 to 150 ohms across 1.8 to 54 MHz.

It is important that only one antenna type is connected and selected at a time. Simultaneously connecting both antenna types can cause damage to the tuner during transmission, according to the product information.

Automatic tuning within seconds

Antenna tuning happens automatically. The TUNER button on a compatible Icom transceiver starts the tuning process. Under normal circumstances, the AH-6 will reduce the VSWR to 2:1 or better in approximately 2 to 3 seconds.

The tuner can also store data for up to 200 previously used frequencies. If you switch back to a stored frequency, the AH-6 can recall the previous tuning data in less than one second. This is especially practical when you regularly switch between bands and frequencies.

Reduced radiated power during tuning

For the automatic tuning process, the AH-6 uses approximately 5 to 15 watts of transmit power. An internal attenuator significantly reduces the RF power actually radiated through the antenna during tuning.

This limits unnecessary transmissions during tuning and reduces the chance of interference to other stations during the tuning process.

Robust IP54 housing for outdoor mounting

Because a remote ATU is preferably placed close to the antenna's feed point, the housing must be suitable for outdoor use. The Icom AH-6 therefore has a robust IP54 housing, which provides protection against dust and splashing water. According to the product information, the housing is also highly resistant to salty environments.

The specified temperature range is from -10 °C to +60 °C. With dimensions of approximately 172 × 230 × 71 mm and a weight of approximately 1.25 kg, the tuner remains relatively compact.

Mounting is possible on, for example, an antenna mast or a flat surface. For reliable operation, a short, low-impedance ground connection is important. The necessary mounting hardware and sealing materials are included.

Suitable for various Icom transceivers

According to the supplied compatibility information, the Icom AH-6 automatic antenna tuner is suitable for the Icom IC-7100, IC-718, IC-7300, IC-7610, IC-7760, and IC-7300MK2.

This makes the AH-6 interesting for both existing Icom installations and new antenna setups where a compact automatic tuner directly at the antenna is desired. Always check if your specific Icom transceiver supports the AH-6 before purchasing.

Key features:

• Automatic antenna tuner for longwire and 50 ohm antennas
  
• Frequency range of 1.8 to 54 MHz, from 160 to 6 meters
  
• Remote mounting directly at the antenna's feed point
  
• 200 frequency memories for fast re-tuning
  
• Robust IP54 housing for outdoor mounting

Are you looking for a versatile automatic antenna tuner that can automatically tune a suitable longwire or 50 ohm antenna to your Icom transceiver? Then the Icom AH-6 ATU combines a wide frequency range with fast automatic tuning, frequency memory, and a robust construction for remote installation. Choose the Icom AH-6 and get more convenience from your antenna setup.