Yaesu
Yaesu FC-40 Antenna Coupler
Best outdoor antenna tuner for mobile and base station radio operators.
The Yaesu FC-40 Antenna Coupler is a microprocessor-controlled impedance matching network designed for Yaesu FT-450, FT-857, and FT-897 series transceivers. It mounts near the antenna feed point and is fully waterproof for reliable outdoor installation. This unit handles up to 100 Watts of transmitter power and utilizes transceiver control circuitry for easy monitoring and control. It offers flexible frequency coverage depending on the antenna used, achieving a match typically in five seconds or less, making it an efficient addition to your HF/VHF/UHF setup with 200 memory channels for instant recall.
$284.95
Owner Satisfaction
4.7
/ 5
Category Rank
23
/ 1072
#23 in Communication Radio Accessories
Price vs Category Average
+186%
Above average
Maximum Input Power
1003
/ W ( minutes maximum continuous TX)
Who it's for
- Operators seeking a streamlined, plug-and-play radio setup
- Field enthusiasts using diverse wire or whip antenna configurations
- Outdoor hobbyists needing efficient signal transmission in harsh environments
Who should skip it
- High-power enthusiasts requiring amplification beyond standard transceiver limits
- Radio hobbyists who frequently switch between different equipment brands
- Operators primarily utilizing balanced antenna systems like dipoles
Performance breakdown
Tuning Speed
Rapid impedance matching ensures you never miss a fleeting signal.
Weather Resistance
Rugged, waterproof housing stands up to harsh outdoor environmental conditions.
Memory Capacity
Two hundred storage channels provide near-instant recall for frequent frequencies.
Integration Ease
Seamless transceiver control simplifies setup and daily operation for users.
Power Handling
Reliable 100-watt capacity covers standard amateur radio transmission requirements.
Frequency Versatility
Broad range compatibility supports diverse antenna configurations for flexible operation.
Key Specs
Maximum Input Power
100W (3 minutes maximum continuous TX)
Operating Frequency Range
1.6 - 54MHz with 20+m end-fed wire
Operating Frequency Range
7 - 54MHz with YA-007 HF 2.5 m Mobile Whip Antenna
Input Impedance
50 Ohms
Tune-up Power
4 - 60W
Tune-up Time
8 seconds maximum
Impedance Matching Memories
200 Channels
Power Supply
13.8V DC (supplied from transceiver)
Features
- Microprocessor-controlled impedance matching
- Fully waterproof for outdoor use
- Handles 100 Watts of power
- Stores 200 match settings
- Controlled via transceiver
- Fast tuning under five seconds
- Wide frequency range compatibility
- Powered directly from transceiver
What customers say
Owners highly value the Yaesu FC-40 Antenna Coupler for its exceptional reliability and seamless integration with compatible transceivers. Users consistently praise its robust, weather resistant construction, noting its flawless performance even when permanently installed outdoors. The core strength is the automatic tuning process, which is quick, accurate, and initiated directly from the radio front panel, offering a true set it and forget it experience. The FC 40 efficiently achieves low SWR matches across various amateur bands, even with challenging loads. While the initial cost is noted, the consensus is that the superior operational convenience and enduring quality fully justify the investment for enhancing field flexibility.
Know before you buy
The FC-40 is specifically designed for use with the Yaesu FT-450, FT-857, and FT-897 series transceivers. It integrates directly with these models, allowing you to control the tuner through the radio's interface.
Yes, the unit is fully waterproof and designed to be mounted near the antenna feed point. This placement helps minimize signal loss and improves overall efficiency compared to an indoor tuner.
The FC-40 works best with an end-fed wire antenna of at least 20 meters for full 1.6–54MHz coverage. If you are using a shorter mobile whip antenna like the YA-007, the frequency range is limited to 7–54MHz.
The coupler features 200 memory channels that automatically store your successful impedance matching settings. Once a frequency is tuned, the unit recalls those settings instantly the next time you transmit, making band switching significantly faster.
No, the unit is powered directly by your transceiver via the supplied multi-pin cable. This simplifies your setup by eliminating the need for an extra power source at the antenna site.
The FC-40 is rated for a maximum input power of 100 Watts. Please note that for continuous transmission, you should limit your output to 100 Watts for a maximum of three minutes to prevent overheating.
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