Review of Yaesu ATAS-120A Motorized HF/VHF/UHF Antenna for Ham Radios

Description

Exploring the Yaesu ATAS-120A: An All-in-One Solution for Mobile Ham Radio Enthusiasts

Using the Yaesu ATAS-120A (Auto-Tune Motorized Antenna) has been an adventure in itself. This antenna is specifically designed for compatibility with a range of Yaesu models, including the FT-857D, FT-450D, and FT-897D, among others. From my experience, this antenna brings a level of convenience and performance that stands out, but there are definitely a few considerations to keep in mind.

Design and Build Quality

The two-piece design of the Yaesu ATAS-120A is both sleek and functional. It features a motorized lower coil section topped with a durable stainless steel whip, extending to a maximum of approximately 5 feet when fully deployed. The build feels incredibly sturdy, and the materials used seem to be chosen with longevity in mind. I was particularly impressed with the motorized “trombone” section, which automatically adjusts the antenna’s length for optimal tuning. This feature is a game-changer, especially for anyone like me who frequently operates on different bands.

While the design is perfect for mobile (automotive) use, the antenna does require an optional SO-239 thread mobile mount and coaxial cable, which are not included. This added requirement might be a hassle for some, but I found the setup process straightforward once I had the necessary accessories.

Performance Across Bands

The ATAS-120A antenna covers HF through UHF bands, specifically from 40 meters to 70cm. During my testing, it performed exceptionally well across this range. The automatic tuning feature works seamlessly with compatible Yaesu radios, allowing the antenna to adapt its length at the push of a button. For someone who spends a lot of time switching bands, this feature is invaluable. I tested it with my FT-991A, and the tuning process was nearly instantaneous.

However, I did notice that tuning can sometimes be a bit slower on the lower bands, particularly around 40 meters. This isn’t a dealbreaker, but it’s something to be aware of if you frequently operate on lower frequencies. Despite this slight hiccup, the overall performance was solid, and the signal clarity was excellent.

Ease of Use

One of the key benefits of this antenna is its user-friendly nature. Once installed, the automatic tuning mechanism eliminates the need for manual adjustments, which can be both time-consuming and frustrating. I found this particularly helpful during mobile operations, where making manual tweaks isn’t always practical. The plug-and-play compatibility with Yaesu radios makes it a great fit for anyone already invested in the brand.

That said, the requirement for a separate mount and coaxial cable might be a bit of a hurdle for beginners. It’s not immediately ready to use out of the box, which could be a drawback for those new to ham radio setups.

Key Benefits

• Broad Frequency Coverage: Supports HF to UHF bands, making it versatile for various applications.
• Automatic Tuning: The motorized adjustment system simplifies operations and ensures optimal performance.
• Durable Build: Stainless steel whip and robust construction promise long-lasting use.
• Compatibility: Designed specifically for Yaesu models, ensuring seamless integration.

Areas for Improvement

• Additional Accessories Required: The need for a separate mount and coaxial cable adds extra steps and costs.
• Slower Tuning on Lower Frequencies: Tuning can be slightly delayed on bands like 40 meters.
• Limited Compatibility: Only works with select Yaesu radios, so it’s not a universal solution.

Competing Products

While the Yaesu ATAS-120A is impressive, there are other antennas worth considering. For instance, the Diamond SD330 offers manual tuning but supports a broader range of radios. It’s a more budget-friendly option, but it lacks the convenience of motorized adjustments. On the other hand, the MFJ-1668 provides excellent performance across HF bands with a focus on stationary use, though it’s bulkier and less suited for mobile operations.

Compared to these competitors, the ATAS-120A stands out for its ease of use and seamless integration with Yaesu radios. However, its reliance on additional accessories and slower tuning on lower bands might make other options more appealing to some users.

Cost Efficiency

When considering the price-to-quality ratio, the ATAS-120A offers good value for those already using compatible Yaesu radios. Its automatic tuning and robust build justify the investment, especially for mobile operators who need a reliable and easy-to-use solution. While the additional cost of accessories might deter some buyers, the overall convenience and performance make it a worthwhile purchase.

In summary, the Yaesu ATAS-120A is a solid choice for ham radio enthusiasts who prioritize ease of use and compatibility with Yaesu equipment. While there are a few areas for improvement, its benefits far outweigh the drawbacks, making it a valuable addition to any mobile setup.

Additional information