Comprehensive review of Yaesu ATAS-120A auto-tuning HF/VHF/UHF antenna for ham radios

Description

A Well-Designed Auto-Tuning Antenna for Ham Radio Enthusiasts

The Yaesu ATAS-120A Auto Tune Motorized HF/VHF/UHF Antenna is a sleek and functional piece of equipment that delivers exactly what it promises. As someone who spends a great deal of time experimenting with ham radios, I was eager to test this motorized antenna and see how it performs in real-world conditions. The design, compatibility, and unique features of this antenna make it stand out, but there are also a few quirks that may impact some users.

Merits of the Design

The overall appearance of this antenna is both compact and professional. It has a two-piece construction, with a motorized lower coil section and a stainless steel whip on top. At full extension, it reaches approximately five feet in length, making it suitable for mounting on most vehicles without appearing cumbersome. The stainless steel whip not only adds durability but also ensures stable performance over time.

What I found particularly convenient is its motorized “trombone” design, which automatically lengthens or shortens the antenna to achieve optimal tuning. By pressing the tune button on compatible Yaesu radios, the antenna adjusts itself seamlessly. This feature eliminates the need to manually tweak settings, which is a game-changer when driving or moving between different bands.

Performance Across HF, VHF, and UHF Bands

Using this antenna, I was able to cover frequencies from 40 meters through 70cm without any noticeable drop in signal quality. The auto self-tuning mechanism is flawless, provided you’re using one of the supported Yaesu models. I tested it with a Yaesu FT-991A, and the integration was smooth. The antenna was able to lock onto signals quickly, even under less-than-ideal conditions.

While primarily designed for mobile use, the antenna’s adaptability across multiple bands makes it a versatile choice for ham radio enthusiasts who want a reliable solution for both local and long-distance transmissions.

Good Aspects

The Yaesu ATAS-120A brings several advantages that enhance its usability:

• Fully automatic tuning with supported radios, saving time and effort.
• Wide frequency range, covering HF through UHF bands.
• Sturdy stainless steel whip, ensuring long-term durability.
• Compact design, ideal for mobile use without being overly conspicuous.

Areas for Improvement

Despite its many strengths, there were a few caveats that stood out during my testing:

• Requires additional components like a suitable mobile mount and coaxial cable, which are not included in the package.
• The weight distribution feels slightly top-heavy, which might be a concern for some mounting setups.
• Compatibility is limited to specific Yaesu models, leaving out users with other brands or older systems.

These are not deal-breakers but are worth considering before making a purchase.

Competing Products

In comparison with other motorized antennas, the Yaesu ATAS-120A holds up well. For instance, the Diamond SD330 offers similar coverage but lacks the fully automatic tuning feature that the Yaesu model provides. On the other hand, antennas like the Comet UHV-6 offer a more cost-effective solution but require manual adjustments, which can be inconvenient.

Where the Yaesu model truly excels is in its integration with Yaesu radios. If you already own a compatible radio, the seamless operation and auto-tune functionality make it a superior choice. However, if you’re on a tighter budget or using non-Yaesu equipment, other options might be worth exploring.

Value for Money

The price point of this antenna is justified by its advanced features and compatibility. While it may seem slightly expensive at first glance, the fully automatic tuning function and broad frequency coverage add significant value. For those who spend a lot of time on the road or frequently switch between bands, this is a worthwhile investment.

From my perspective, the Yaesu ATAS-120A offers a great balance of quality and convenience. Its ability to adapt to different frequencies without manual intervention makes it a standout product in the world of motorized antennas.

Additional information