Here’s a clean, professional eBay-ready ad for the W2IHY 3+1 (3×1) switch box / controller system—written in the style that sells well on QRZ/eBay for ham gear 👇

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📻 W2IHY 3+1 (3×1) Controller / Switch Box – Multi Radio / Amp Switching

Up for sale is a W2IHY 3×1 (3+1) Controller Switch Box, one of the most popular switching solutions for serious HF operators running multiple radios and amplifiers.

This unit allows you to seamlessly switch between up to three radios and associated amplifiers with a single control point—perfect for high-end stations, contest setups, or multi-rig shacks.

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🔧 Key Features

• Switch 3 radios to 1 amplifier chain (or multiple devices depending on setup)

• Designed for easy integration with linear amplifiers and station accessories

• Simple front-panel selection for fast switching

• Uses RCA control lines for reliable keying and routing

• Clean, organized station wiring—no more swapping cables

• Built for high-power HF operation (QRO capable systems)

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⚙️ System Capability

• Supports switching between:

• Multiple HF radios

• Linear amplifiers

• External speaker/audio routing (with proper configuration)

• Expandable when used with W2IHY 1×4 coax switches for full station automation 

• Cable packages available to interface radios, amps, and accessories 

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🧰 Condition

• Fully functional

• Clean cosmetic condition (see photos)

• From a working ham shack environment

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📦 Includes

• W2IHY 3×1 controller switch box

• Power cable (if included—adjust as needed)

• Any interconnect cables (specify if you have them)

What you see is what you get. It’s almost new but you might need a couple cables. I might have used it for a month. Works great. It does a lot!