U20524 Used LDG Electronics AT-100ProII 100W Automatic Antenna Tuner

U20524 Used LDG Electronics AT-100ProII 100W Automatic Antenna Tuner

This pre-owned LDG Electronics AT-100ProII automatic antenna tuner is in good working condition, showing noticeable cosmetic surface scratches, scuffs, edge wear, and residual dust/grime across the top cover and sides from previous shack and shelf use. The front faceplate remains fully functional with tactile, responsive pushbuttons, crisp labeling, and bright LED bargraph indicators. All rear RF SO-239 jacks, ground wing nut, radio interface jack, and DC power input are clean and mechanically sound. It includes a shortened DC power pigtail lead and a printed copy of the user operations manual.

The LDG AT-100ProII is a desktop automatic antenna tuner designed to match dipoles, verticals, inverted-Vs, beams, and virtually any coax-fed antenna across 1.8 to 54 MHz (160 through 6 meters). Engineered for 100-watt transceivers (125W SSB/CW, 30W digital), it features an advanced microprocessor-controlled switched-L network capable of matching impedances from 6 to 800 ohms (16 to 150 ohms on 6M). Equipped with 2,000 fast-recall memories per antenna port, it recalls previously tuned parameters in milliseconds when transmitting on a known frequency. The front panel features two easy-to-read LED bargraphs for simultaneous Forward Power (peak or average) and SWR metering, dedicated manual L and C adjustment buttons for fine tuning, and a two-position antenna switch to seamlessly route between two separate antennas.

Condition

• Cosmetic Condition: Good pre-owned condition. The metal casing shows moderate surface scratches, handling scuffs, finish wear along the top front bezel edge, and general shelf dust from shack use.

• Front Controls & LEDs: All front-panel push buttons (Func, C Up/Dn, L Up/Dn, Ant, Tune) click positively and operate properly, and the LED power/SWR status bargraph displays clearly.

• Rear Panel & Connections: SO-239 coaxial antenna/transmitter ports, ground wingnut terminal, radio control jack, and 12V DC barrel socket are clean, solid, and undamaged.

• Power Cable Note: Includes a shortened DC power lead terminated with a barrel plug and stripped pigtail wire ends.

Key Features

• 1.8 to 54 MHz Coverage: Full HF and 6-meter band coverage with high-speed automatic tuning.

• 125W Power Rating: Handles up to 125 Watts SSB/CW and 30 Watts in continuous carrier/digital modes (FT8, RTTY, PSK).

• Wide Impedance Range: Matches 6 to 800 ohm loads (approx. 10:1 SWR down to 1.5:1 or less) on HF, and 16 to 150 ohms on 6M.

• Dual Antenna Switching: Front-panel selection allows instant toggling between Ant 1 and Ant 2.

• 4,000 Total Memories: 2,000 frequency memories per antenna port allow near-instantaneous tuning recall (under 0.2 seconds).

• Dual LED Bargraph Displays: Real-time visual monitoring of RF power output (5 to 125W scales) and SWR (1.1 to over 3.0).

• Manual Fine-Tuning Controls: Independent capacitor (C) and inductor (L) up/down buttons allow operators to manually tweak impedance matches.

• Transceiver Interfacing: Dedicated rear Radio port supports optional interface cables for automated one-touch tuning with popular Icom, Yaesu, and Kenwood rigs.

What's Included

• LDG Electronics AT-100ProII Automatic Antenna Tuner

• Short DC Power Pigtail Cable (Barrel Plug to Bare Wire)

• LDG AT-100ProII Printed Operations Manual

Comes With Our 90-Day Warranty!

Serial Number: n/a

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