---
product_id: 9111964
title: "AT-100PROII LDG Electronics Automatic Antenna Tuner 1.8-54 MHz, 1-125 Watts, Updated Features Include an LED Indicator for Antenna Selection and an LED to Indicate When in Bypass .2 Year Warranty"
brand: "ldg electronics"
price: "£317.90"
currency: GBP
in_stock: true
reviews_count: 8
category: "Ldg Electronics"
url: https://www.desertcart.co.uk/products/9111964-at-100proii-ldg-electronics-automatic-antenna-tuner-1-8-54
store_origin: GB
region: United Kingdom
---

# LED indicators for power, SWR & status 1.8-54 MHz wideband coverage Instant 2-antenna switching AT-100PROII LDG Electronics Automatic Antenna Tuner 1.8-54 MHz, 1-125 Watts, Updated Features Include an LED Indicator for Antenna Selection and an LED to Indicate When in Bypass .2 Year Warranty

**Brand:** ldg electronics
**Price:** £317.90
**Availability:** ✅ In Stock

## Summary

> ⚡ Tune smarter, switch faster, dominate the airwaves!

## Quick Answers

- **What is this?** AT-100PROII LDG Electronics Automatic Antenna Tuner 1.8-54 MHz, 1-125 Watts, Updated Features Include an LED Indicator for Antenna Selection and an LED to Indicate When in Bypass .2 Year Warranty by ldg electronics
- **How much does it cost?** £317.90 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/9111964-at-100proii-ldg-electronics-automatic-antenna-tuner-1-8-54)

## Best For

- ldg electronics enthusiasts

## Why This Product

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

## Key Features

- • **Smart Memory Tuning:** Stores 2,000 frequency presets for lightning-fast retuning
- • **Clear Visual Feedback:** Bright LED bargraphs display real-time RF power and SWR
- • **Dual Antenna Power Play:** Switch instantly between two antennas with a push-button
- • **Power-Efficient Precision:** Latching relays minimize power draw—perfect for portable ops
- • **Seamless Frequency Mastery:** Covers 1.8-54 MHz for ultimate band flexibility

## Overview

The LDG AT-100ProII is a robust automatic antenna tuner designed for amateur radio pros, covering 1.8-54 MHz and handling up to 125 watts. Featuring dual antenna ports with instant switching, advanced memory tuning with 2,000 presets, and bright LED indicators for power and SWR, it ensures efficient, low-power operation ideal for both portable and fixed setups. Backed by a 2-year warranty, it’s the go-to tuner for seamless, professional-grade antenna management.

## Description

The LDG AT-100ProII is a general purpose automatic tuner suitable for many amateur applications. It covers 1.8-54 MHz, and features a two-position antenna switch allowing instant switching between two antennas. The AT-100ProII requires just 1 watt for operation but will handle up to 125 watts, making it suitable for everything from QRP to a typical 100 watt transceiver. Like most LDG tuners the AT-100ProII operates automatically, beginning a tuning cycle whenever the SWR exceeds a preset limit. The AT-100ProII also features LDG’s advanced memory tuning, providing 2,000 memory locations; when tuning near a previously used frequency it will recall the settings for nearly instant tuning. It learns your favorite frequencies and bands as you use it. You can also start a tuning cycle manually whenever necessary. Large, easy-to-read LED bargraphs show forward and reverse power in peak or average mode, and SWR. Two power scales are provided: 12.5 watts and 125 watts. The bargraphs also indicate tuner status and input confirmations. The AT-100ProII uses LDG’s state-of-the-art, processor-controlled Switched-L tuning network. It will match dipoles, verticals, inverted-Vees or virtually any coax-fed antenna. With an optional LDG balun, you can also use longwires or antennas fed with ladder-line. It handles 100 watts SSB or 50 watts FM/Digital when used with a solid-state transceiver; vacuum tube transmitters cut the power ratings about in half. The AT-100ProII uses latching relays which retain the tuned configuration indefinitely even when the unit is powered down. The latching relays also enable extremely low power consumption; when not actively tuning the AT-100ProII draws next to no power at all. This makes it suitable for portable or mobile operation from batteries. All LDG tuners come with a two year fully transferable warranty and LDG’s legendary customer service.

Review: Best value. - This tuner is built in a traditional fashion (led & push button). No fancy lcd display or anything else that could go bad. Simple and functional. Truly intelligent tuner. Pick a frequency, set the tuner to auto, and fire low power, it will look for the best match ( it will take sometime the first time you tune to any given frequency), once tuned to the lowest match, it memorizes it in a memory slot so the next time you go to the frequency it will tune it INSTANTLY. Two antenna ports really comes in handy, you can switch it to a better receive antenna on port b and back to port b for transmit antenna if that’s what you use or you can have two totally different antennas to switch in different bands. The manual tuning comes in handy when the antenna is deficient and confuses the tuner by introducing unwanted RF on the board. You can manually assist the tuner, and in many cases get a flat match with a not so good antenna, again you should have a well design antenna system so the most signal goes out, but it is a good manual feature to get you out of a pinch in a difficult antenna situation. Power and SWR led’s are bright and very well configured (it gives an accurate value). It is metal , compact and well built. I will buy a second one for mobile operation. Love it.
Review: Nice Tuner - Just as advertised Antenna tuner.... manual, semi-automatic and full automatic. Works well no issues ... Dual antenna ports selectable from the front panel with just a push of the button. But remember to read the manual and understand its operation. I am use with a low power QRP radio works perfectly thanks much

## Features

- It covers 1.8-54 MHz, and features a two-position antenna switch allowing instant switching between two antennas.
- For Dipoles, Verticals, Vs, Beams or and Coax Fed Antenna
- Power requirements: 11 to 16 volts DC at 500 mA Max.
- 125 Watts SSB/CW, 30W Digital
- Easy to read LED bar-graph display for RF power, SWR, status. LED indicator for antenna selection and bypass.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00KH5OH2U |
| Antenna | Radio |
| AntennaDescription | Radio |
| Best Sellers Rank | #10,636 in Two-Way Radio Accessories #536,194 in Electronics Accessories & Supplies |
| Brand | LDG Electronics |
| Color | Black |
| Compatible Devices | Yaesu, Icom, Kenwood Ham Radio models |
| Connectivity Technology | Radio Frequency |
| Connector Type | 2.5mm ID, 5.5mm OD power plug, Type A |
| Customer Reviews | 4.2 out of 5 stars 51 Reviews |
| Includes Remote | No |
| Manufacturer | LDG Electronics |
| Mfr Part Number | AT-100PROII |
| Model Number | AT-100PROII |
| Tuner Type | Ham Radio Automatic Antenna Tuner |
| UPC | 702685258492 |

## Product Details

- **Brand:** LDG Electronics
- **Color:** Black
- **Compatible Devices:** Yaesu, Icom, Kenwood Ham Radio models
- **Connectivity Technology:** Radio Frequency
- **Connector Type:** 2.5mm ID, 5.5mm OD power plug, Type A

## Images

![AT-100PROII LDG Electronics Automatic Antenna Tuner 1.8-54 MHz, 1-125 Watts, Updated Features Include an LED Indicator for Antenna Selection and an LED to Indicate When in Bypass .2 Year Warranty - Image 1](https://m.media-amazon.com/images/I/61pndR6-gnL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Best value.
*by O***R on April 7, 2021*

This tuner is built in a traditional fashion (led & push button). No fancy lcd display or anything else that could go bad. Simple and functional. Truly intelligent tuner. Pick a frequency, set the tuner to auto, and fire low power, it will look for the best match ( it will take sometime the first time you tune to any given frequency), once tuned to the lowest match, it memorizes it in a memory slot so the next time you go to the frequency it will tune it INSTANTLY. Two antenna ports really comes in handy, you can switch it to a better receive antenna on port b and back to port b for transmit antenna if that’s what you use or you can have two totally different antennas to switch in different bands. The manual tuning comes in handy when the antenna is deficient and confuses the tuner by introducing unwanted RF on the board. You can manually assist the tuner, and in many cases get a flat match with a not so good antenna, again you should have a well design antenna system so the most signal goes out, but it is a good manual feature to get you out of a pinch in a difficult antenna situation. Power and SWR led’s are bright and very well configured (it gives an accurate value). It is metal , compact and well built. I will buy a second one for mobile operation. Love it.

### ⭐⭐⭐⭐⭐ Nice Tuner
*by W***N on September 10, 2014*

Just as advertised Antenna tuner.... manual, semi-automatic and full automatic. Works well no issues ... Dual antenna ports selectable from the front panel with just a push of the button. But remember to read the manual and understand its operation. I am use with a low power QRP radio works perfectly thanks much

### ⭐⭐⭐⭐⭐ Fantastic companion to Icom Radios that do not have built ...
*by R***2 on September 14, 2015*

Fantastic companion to Icom Radios that do not have built in tuners but are plumbed for one. I've added one to an IC-718 and an IC-7100 with the appropriate cable (Sold separately) that activates the tuner button on these radios and controls this tuner. This is a fantastic upgrade from my MFJ manual tuner. Love this tuner, great price and great performance for 100 watts. The dual antenna input is a nice feature too.

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*Product available on Desertcart United Kingdom*
*Store origin: GB*
*Last updated: 2026-05-25*