Icom
Icom AT-140 Tuner
Best antenna tuner for serious marine radio operators.
Optimize your marine communication with the Icom AT-140 Tuner, designed to seamlessly integrate with M802 or M803 radios. This tuner enhances antenna performance by automatically bypassing e-mail and shortwave listening functions to leverage the full antenna for superior reception. It ensures rapid frequency access and features a robust, weather-resistant acrylic case with rubber gaskets for durability. Setup is simplified with pre-wired, plug-and-play connections, providing quick tuning times for reliable communication in any marine environment.
$568.35
Owner Satisfaction
4.7
/ 5
Category Rank
2
/ 178
#2 in Marine Radios
Price vs Category Average
+14%
Above average
Brand
Icom
/ Icom
Who it's for
- Icom transceiver owners seeking seamless, automated system integration
- Marine operators needing reliable performance in harsh saltwater environments
- Radio enthusiasts requiring versatile frequency matching across the HF spectrum
Who should skip it
- Installers wanting to avoid complex remote antenna feed point mounting
- Budget-conscious hobbyists looking for affordable general-purpose tuning solutions
- High-power operators requiring amplifiers exceeding the 150-watt limit
Performance breakdown
Tuning Speed
Rapid two-second adjustments ensure you never miss a critical transmission.
Weather Durability
Rugged acrylic housing and rubber gaskets withstand harsh marine environments effortlessly.
Installation Simplicity
Pre-wired, plug-and-play connections make setup straightforward for any boat owner.
Signal Optimization
Bypassing unnecessary functions maximizes antenna efficiency for superior long-range reception.
System Compatibility
Designed specifically for seamless integration with Icom M802 and M803 radios.
Power Handling
Handles 150 watts of peak power, meeting standard marine communication requirements.
Key Specs
Brand
Icom
Weight
27.25 lb
Dimensions
230 (w) x 340 (H) x 80 (D) mm
Antenna connector
SO-239
Max. Input Power
150 W (PEP) 100 W (continuous)
Automatic tuning time
Approx 2-3 seconds
Waterproof Rating
IPX7
Model Number
ICO-AT140
Features
- Optimizes antenna performance for M802/M803
- Bypasses e-mail/shortwave for better reception
- Allows full antenna use
- Fast frequency access
- Quick low power tune-up
- Pre-wired for easy setup
- Weather-resistant construction
What customers say
Users overwhelmingly value the Icom AT-140 Tuner for its exceptional ruggedness and reliability, especially in harsh marine environments. Its design excels at withstanding extreme weather and saltwater exposure, justifying the initial investment. A key strength is its rapid tuning speed across diverse impedances, making it highly efficient with common maritime antennas like whips and long wires. When connected to compatible Icom radios, integration is seamless, requiring little ongoing adjustment. While the cost is high, operators view this tuner as essential infrastructure. Its dependable performance in critical communication scenarios confirms its excellent long-term value, despite installation requiring careful attention to grounding.
Know before you buy
The AT-140 is specifically designed to integrate seamlessly with the Icom M802 and M803 marine HF radio systems.
The AT-140 is highly efficient, typically achieving a full tune-up in approximately 2 to 3 seconds.
Yes, it features a robust, weather-resistant acrylic case with rubber gaskets and carries an IPX7 waterproof rating, making it well-suited for harsh marine environments.
The AT-140 supports a maximum input power of 150 W (PEP) or 100 W for continuous transmission.
No, the unit is designed for a straightforward setup with pre-wired, plug-and-play connections that simplify the installation process.
It automatically bypasses e-mail and shortwave functions to leverage the full length of your antenna, which significantly enhances signal reception across the HF band.
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