Yaesu ATAS-120A HF/VHF/UHF Antenna Review for FT-857D and FT-450D Radios

Description

Versatile Design for Amateur Radio Enthusiasts

The Yaesu ATAS-120A Auto Tune Motorized Antenna has been a fascinating addition to my amateur radio setup. Its motorized design allows seamless integration with Yaesu models like the FT-857D, FT-450D, and FT-897D, among others. This antenna is specifically designed for HF, VHF, and UHF bands, covering frequencies from 40 meters to 70 centimeters, and it does so effortlessly. I was impressed by its compact build, which doesn’t compromise on performance. At around 5 feet in maximum length, it remains manageable while still delivering exceptional signal tuning.

For someone who enjoys tinkering with radio setups, the motorized tuning system felt like a game changer. By connecting it to a compatible Yaesu transceiver, the antenna automatically adjusts its length when the tune button is pressed. This feature eliminates the hassle of manual adjustments, making it ideal for both mobile and stationary use. However, I should note that it requires an optional SO-239 mobile mount and coaxial cable, which are not included. While this wasn’t a dealbreaker for me, it’s something to consider if you’re expecting an out-of-the-box solution.

Key Benefits

• Motorized self-tuning simplifies operation with compatible Yaesu radios.
• Compact yet effective, with a maximum length of approximately 5 feet.
• Versatile coverage from HF to UHF frequencies (40m to 450MHz).
• Durable construction with a stainless steel whip for reliability over time.

Areas for Improvement

• The need for additional accessories, like the optional mobile mount and coaxial cable, can increase the setup cost.
• Compatibility is limited to specific Yaesu radios, so check your owner’s manual before purchasing.
• Adjustments and performance may vary slightly depending on vehicle mounting options.

Performance and Functionality

Using this antenna has been a smooth experience. The “trombone” motorized section adjusts itself automatically, which is a fantastic feature when you’re on the move. Whether I was operating on 40 meters or switching up to UHF frequencies, the transition was flawless. I tested it extensively in various environments, from urban areas to open highways, and the signal quality was consistently strong. The stainless steel whip adds not just durability but also a polished, professional look that complements its functionality.

That said, I noticed that the performance improved significantly with proper grounding and mounting. If you’re planning to use this for mobile applications, a solid installation is crucial for optimal output. The antenna’s auto-tuning mechanism worked as advertised, though it did require a few seconds to adjust on certain bands.

Build Quality and Installation

The overall build of the ATAS-120A is impressive. It feels sturdy yet lightweight, with the motorized lower coil section being the standout feature. The stainless steel whip is resistant to wear and tear, making it suitable for regular outdoor use. Installing the antenna was straightforward, but finding a suitable mobile mount took a bit of research. The product’s PL-259 base thread is a common standard, so it wasn’t too hard to find compatible mounting options.

One thing worth mentioning is that while the product is designed for mobile use, it can also excel in stationary setups with some creativity. I’ve seen hobbyists use it in fixed installations, and the results were equally satisfying.

Competing Products

When compared to other auto-tuning antennas in the market, this one stands out for its seamless integration with Yaesu radios. For instance, the MFJ-1669 offers similar coverage but lacks the motorized tuning feature, making it less convenient for users who switch bands frequently. Another option, the Comet UHV-6, provides multi-band functionality but requires manual tuning, which can be tedious during mobile operations. In my experience, the ATAS-120A’s motorized mechanism gives it a significant edge in terms of user-friendliness and reliability.

Still, some competitors come with included mounting options, which can make them more appealing for first-time buyers. If you’re already invested in the Yaesu ecosystem, however, this antenna feels like a natural choice.

Value for Money

I found the price-to-quality ratio of this antenna to be reasonable, especially considering its automatic tuning capabilities. While the additional costs for mounts and cables might deter some buyers, the performance it delivers justifies the investment. For amateur radio enthusiasts who prioritize convenience and seamless operation, this product is worth considering. Its robust design and compatibility with multiple Yaesu models make it a valuable addition to any setup.

If you’re someone who frequently operates across different bands, the time saved on manual adjustments alone makes it a smart purchase. However, for those on a tighter budget, alternative options with fewer features might be more appealing.

Additional information