---
product_id: 435649548
title: "Portable Automatic Antenna Tuner ATU-100 | 100W 1.8-55MHz OLED Display | USB Charging Internal Battery"
brand: "walfront"
price: "€ 82.07"
currency: EUR
in_stock: true
reviews_count: 13
category: "Walfront"
url: https://www.desertcart.ie/products/435649548-portable-automatic-antenna-tuner-atu-100-100w-1-8-55mhz
store_origin: IE
region: Ireland
---

# 100W max power handling 1.8-55MHz wide frequency range 1350mAh internal rechargeable battery Portable Automatic Antenna Tuner ATU-100 | 100W 1.8-55MHz OLED Display | USB Charging Internal Battery

**Brand:** walfront
**Price:** € 82.07
**Availability:** ✅ In Stock

## Summary

> 📡 Tune in, power up, and never miss a signal!

## Quick Answers

- **What is this?** Portable Automatic Antenna Tuner ATU-100 | 100W 1.8-55MHz OLED Display | USB Charging Internal Battery by walfront
- **How much does it cost?** € 82.07 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ie](https://www.desertcart.ie/products/435649548-portable-automatic-antenna-tuner-atu-100-100w-1-8-55mhz)

## Best For

- walfront enthusiasts

## Why This Product

- Trusted walfront brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **USB-Powered Freedom:** Recharge anywhere with USB-A charging—ditch bulky power sources and stay mobile.
- • **Precision Tuning Mastery:** Achieve ultra-low SWR ratios down to 1.05 for crystal-clear long-distance comms.
- • **Global Band Compatibility:** Tune effortlessly across 1.8-55MHz, connecting you worldwide from local nets to international DX.
- • **One-Button Intuitive Control:** Simplify your field setup with smart short/long press tuning and real-time OLED feedback.
- • **Rugged & Ready for Adventure:** Durable aluminum alloy casing built to withstand heat and rough outdoor use.

## Overview

The Portable Automatic Antenna Tuner ATU-100 is a compact, rugged device designed for efficient antenna tuning across 1.8-55MHz bands. It supports up to 100W power, features an intuitive single-button operation with OLED display for real-time SWR and power metrics, and includes a rechargeable 1350mAh internal battery charged via USB-A. Ideal for portable and POTA operations, it ensures optimal antenna performance with minimal setup.

## Description

Buy Portable Automatic Antenna Tuner ATU-100 | 100W 1.8-55MHz OLED Display | USB Charging Internal Battery: Radio Antennas - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Works great on my 24 ft EFD antenna. - Works great with my FT 710. Only have a 24ft EFD antenna due to HOA. FT 710 ATU couldn’t tune that short antenna on 40 and 80 meters. The ATU -100 solved that issue. Good value.
Review: PILE OF JUNK AUTOMATIC TUNER - Don't buy this product. I have read how it will burn out easy after I ordered it. So when it arrived it did not have very clear instructions. As a precaution, I took my radio and the new tuner to an authorized radio shop. He hooked it up and swr was 1.3 with the power output on radio set to 25 watts. Unit was in automatic mode and as soon as the mike was keyed, the display screen went blank. This is a true piece of junk, I'm serious, it will not work and you will have a box of junk for nothing. I would rate it myself as a -500

## Features

- Precision Tuning Performance: Reduces high SWR efficiently across 40m/20m/80m bands, achieving optimal ratios as low as 1.05. Supports tuning from 5W power input and handles 100W SSB transmission post-tuning for clear long-range communication
- Intuitive Single-Button Control: Simplified operation with short/long press function for tuning and reset. Features real-time OLED display showing SWR and power metrics, eliminating guesswork during field operations
- Rugged Portable Design: Aluminum alloy casing ensures durability, heat dissipation, and resistance. Compact build with internal battery supports portable/POTA operations without external power
- USB Charging Convenience: Integrated 1350mAh battery recharges via included USB-A to USB-C cable. Note: Requires USB-A power source (USB-C to USB-C not supported)
- Wide Band Compatibility: Operates at 1.8-55MHz with 10-15VDC voltage range. Tunes antennas rapidly for radios like /, enabling global contacts (e.g., US to Europe/Russia)

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09S9VPZ8X |
| Best Sellers Rank | #2,295 in Radio Antennas |
| Customer Reviews | 3.2 3.2 out of 5 stars (25) |
| Date First Available | February 11, 2022 |
| Item Weight | 1.28 pounds |
| Item model number | Walfrontkt7r4n2chw6419 |
| Manufacturer | Walfront |
| Package Dimensions | 7.32 x 4.92 x 2.44 inches |

## Product Details

- **Antenna:** Radio
- **Brand:** Walfront
- **Color:** Black
- **Impedance:** 8.4 Ohms
- **Manufacturer:** Walfront
- **Number of Channels:** 1
- **Number of Items:** 1

## Images

![Portable Automatic Antenna Tuner ATU-100 | 100W 1.8-55MHz OLED Display | USB Charging Internal Battery - Image 1](https://m.media-amazon.com/images/I/61QwELwi9oL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works great on my 24 ft EFD antenna.
*by B***D on January 20, 2026*

Works great with my FT 710. Only have a 24ft EFD antenna due to HOA. FT 710 ATU couldn’t tune that short antenna on 40 and 80 meters. The ATU -100 solved that issue. Good value.

### ⭐ PILE OF JUNK AUTOMATIC TUNER
*by K***S on July 29, 2025*

Don't buy this product. I have read how it will burn out easy after I ordered it. So when it arrived it did not have very clear instructions. As a precaution, I took my radio and the new tuner to an authorized radio shop. He hooked it up and swr was 1.3 with the power output on radio set to 25 watts. Unit was in automatic mode and as soon as the mike was keyed, the display screen went blank. This is a true piece of junk, I'm serious, it will not work and you will have a box of junk for nothing. I would rate it myself as a -500

### ⭐⭐⭐⭐⭐ Glad I purchased!
*by G***. on August 19, 2025*

Very nice product that arrived in perfect condition. I am very pleased with my purchase!

## Frequently Bought Together

- ATU‑100 Mini Automatic Antenna Tuner 0.96in Display Radio Automatic Antenna Tuner with USB Cable 1.8‑55Mhz Radio Tuner
- RFAdapter RG8x Coaxial Cable, CB Coax Cable, 50ft UHF PL259 Male to Male Low Loss CB Antenna Cables, 50 Ohm for HAM Radio, Antenna Analyzer
- YOTENKO RG58 Coaxial Cable 49.2ft, CB Coax Cable, UHF PL259 Male to Male Cable 50 Ohm Coax Low Loss for HF VHF CB Radio, Ham Radio, SWR Meter, Scanner, Antenna Analyzer

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*Product available on Desertcart Ireland*
*Store origin: IE*
*Last updated: 2026-02-21*