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GOOZEEZOO

V3.2 ATU-100 EXT Automatic Antenna Tuner for Ham Radio – 1.8-55MHz, Low SWR Tuner, Compact Design, Works with Amateur Radio Equipment, Ideal for POTA/SOTA/DX with 5000mAh Battery

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Availability: Only 10 left in stock, order soon!
Fulfilled by Amazon
Arrives Monday, Jul 20
Order within 11 hours and 50 minutes
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Style: 5000mAh Battery


Features

  • 5000mAh Battery: Equipped with a 5000mAh high-capacity battery, it delivers long-lasting power to support extended outdoor activities like POTA, SOTA, and field communications. Lightweight and travel-friendly, it's the perfect companion for ham radio enthusiasts who value mobility without sacrificing performance. Before charging, ensure the battery charger's output voltage is below 5V (charger not included)
  • Automatic Antenna Tuner: The ATU-100 is an automatic antenna tuner that quickly adjusts the impedance to optimize signal reception across ham radio frequencies. It saves you valuable time by automatically tuning to the desired frequency without manual adjustments. The fast and reliable SWR tuning enhances communication clarity, ensuring consistent, stable transmissions for amateur radio operators
  • Versatile Compatibility:This low SWR tuner works seamlessly with dipole, vertical, ground, and loop antennas, making it perfect for a wide range of ham radios. Whether you're participating in POTA, SOTA, or DX activities, the ATU-100 tuner adapts to your specific needs, offering reliable performance in various communication environments, including emergency communications and outdoor setups
  • Clear OLED & Easy Use: With a vibrant OLED display, the external antenna tuner provides clear, easy-to-read tuning data, allowing operators to effortlessly track and adjust settings for optimal performance. Whether you're a beginner or an experienced operator, this user-friendly interface ensures you get precise results every time, improving signal reception and reducing the complexity of manual adjustments
  • Long-Term Performance: Crafted with a premium metal shell and professionally soldered internal circuits, the ham antenna tuner is designed for long-lasting performance in both indoor and outdoor environments. Whether you're operating from home or in the field, this robust tuner delivers reliable, stable performance, making it a trusted tool for ham radio enthusiasts who demand durability and ease of use

Description

Specification: Charging port voltage: 5v (USB) Optimal tuning frequency range: 1.8-30MHz (maximum available frequency 55MHz, transmission loss<8dB Power range: 1-18MHz or SSB/CW, ≤ 100W; 18-30MHz or FM/AM/FT8, ≤ 50W, 30-5MHz pass- through only Allowable power supply voltage range: 10-14.5 V DC Maximum current consumption: 400 mA Maximum working power: 100w Maximum possible measured power: 150W Power measurement accuracy: 10% Minimum installation step of inductance: 0.05uH Minimum capacitance installation steps: 10 pF Minimum power required to start tuning: 5W Minimum possible measured power: 0.1W Measurement step for power up to 10W: 0.1W Measurement step for power higher than 10W: 1W Maximum installed inductance: 8.53uH Maximum installed capacity: 1869 pF Working temperature range: - 20~55 ℃ Manual mode: press and hold the TUNE key to trigger the automatic adjustment of the equipment, so as to match the output impedance of the power amplifier (PA) with the antenna feeder. Automatic mode: no key is required, and the system automatically starts to adjust when it detects that the standing wave ratio is greater than 1:3:1. (This value can be adjusted) This device is in manual operation mode by default. The starting power threshold is 5W, and the screen is always on. At present, the optional functions include 1-5W startup, 10-second screen self- extinguishing/constant lighting, full automatic/manual mode, etc. The parameters used by the product are the main parameters tested by the developer during the software development process, ensuring the reliability of the equipment operation and use in the basic version. Many parameters can be changed by themselves, but they need to be changed carefully to prevent the equipment from being unavailable.

Antenna: Radio


Brand: GOOZEEZOO


Color: black


Number of Channels: 1


Impedance: 50 Ohms


Maximum Range: 1000 Meters


Product Dimensions: 9"L x 5.1"W x 2.4"H


Manufacturer: GOOZEEZOO


Unit Count: 1.0 Count


Number of Items: 1


AntennaDescription: Radio


Brand: GOOZEEZOO


Manufacturer: GOOZEEZOO


Number of Items: 1


Warranty Description: 1 year manufacturer


Unit Count: 1.0 Count


Number of Channels: 1


Impedance: 50 Ohms


Maximum Range: 1000 Meters


Color: black


Item Dimensions L x W x H: 9"L x 5.1"W x 2.4"H


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, Jul 20

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Similar Products

Top Amazon Reviews

    • No need to spend twice as much.
Style: 5000mAh Battery
I use this between an FT710 and a ZS6BKW antenna. It has no trouble tuning 80 thru 10 meters, including 60, 30 and 15M. Not the most efficient use of a ZS6 on 60, 30, or 15 but you can get a signal out and keep the rig happy. I have tuned with 100W CW, and 20 W AM/FM. The foldback circuitry of the FT710 keeps the output low until the SWR is lowered to a suitable value. I like the internal battery and the 12 power jack on the back feature. ... show more
Reviewed in the United States on November 6, 2025 by MAZ
    • Pairs well with G106 QRP transceiver....
Style: 5000mAh Battery
This is a nice little tuner. I paired it with my Xiegu G-106 transceiver, setting the G106 right on top of it. The display is bright and clear. Displays PWR, SWR, L and C, although small it is easy to read. I opt for the unit with internal battery and it last a long time. The tuning is fast and works well. I've tuned my 40m NVIS dipole and vertical for other bands and it just works. Caveat: With the Xiegu G-106 it needs be to set to High (5 watts) on TX power to get the tuner to work. Then after tuning I can leave it on high or set for mid or low power if staying on the same frequency. ... show more
Reviewed in the United States on November 9, 2025 by RL
    • How can I ask the Seller a question?
Style: 5000mAh Battery
How can I ask the Seller a question? My unit doesn't seem to be charging the battery using a 2 aH USB-C charger. The LED is blank (the directions say it should be red while charging, green when charged). Unit works very well on LINE setting, with 12 vdc in the rear power jack. I think the battery selector switch may have been left on inadvertently in my POTA case for a week or two and the battery probably discharged. I'm going to keep it on the USB-C 5v charger for 24 hours to see if it comes back to life. If not, I'll need to contact the Seller to see if I can get a replacement. Thanks! 73 DE N2GJ ABQ NM USA -- 5 stars if I can resolve this problem.... ... show more
Reviewed in the United States on March 15, 2025 by GJJ
    • Excellent ATU
Style: 5000mAh Battery
Tunes me up quickly. My antenna would always cause my amplifier to go off due to high SWR (over 2.2). With the tuner, it all works well.
Reviewed in the United States on April 16, 2026 by jrc
    • ATU-100
Style: 5000mAh Battery
Easy to use and I’m able to get my radio and antenna to get a usable match.
Reviewed in the United States on May 14, 2026 by Brad Cornelius
    • Only worked 30 days. Running 70-80watts pota phone
Style: 5000mAh Battery
Used it with my yaesu 891 for 1 month, stopped working. It worked great while it worked but died yesterday. Bought it in September but didn’t use it until February. Now money wasted. I ran 50-80 watts no data only pota phone use
Reviewed in the United States on March 17, 2026 by Waves and Wings
    • Great antenna tuner
Style: 5000mAh Battery
Good battery for many hours use. Does a good job antenna matching.
Reviewed in the United States on May 2, 2026 by Fred
    • Great little quick tuner
Style: 5000mAh Battery
I still like my dial manual tuner for the extremes but this is a great little tuner to get in the air quickly in most cases. I absolutely love it!
Reviewed in the United States on May 20, 2026 by Bill

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