U20343 Used SGC SG-237 HF-VHF Smartuner

U20343 Used SGC SG-237 HF-VHF Smartuner

Overall Condition: Used, excellent physical condition! Shows clean, pristine top labeling and waterproof housing with no notable cosmetic wear or flaws. All mounting flanges, ground studs, and weather-sealed cable glands are intact and solid. Comes complete in its original SGC factory box with attached coaxial/power cable harness and printed installation manual.

The SGC SG-237 Smartuner is a high-efficiency, fully automatic microprocessor-controlled antenna coupler designed for 1.8 to 60 MHz (160 Meters through 6 Meters) HF-VHF operation. Capable of matching virtually any antenna type—including long wires, whips, loops, dipoles, or backstays—it delivers instant tuning with power inputs from 3 Watts up to 100 Watts PEP.

Engineered in a compact, weather-resistant enclosure, the SG-237 requires only 12V DC power and RF input to operate. Its non-volatile memory stores previous tuning solutions, allowing the coupler to lock onto frequencies in milliseconds for seamless frequency-hopping, portable, marine, mobile, or base station use.

Condition Breakdown

• General: Pre-owned, pristine physical condition with clean housing and crisp graphic overlay

• Enclosure & Seals: Weatherproof casing, mounting flange ears, and rubber cable boot are fully intact

• Connectors & Hardware: Stainless steel RF ground wingnut terminal, heavy-duty coax input cable, and 12V DC power lead are solid and clean

• Documentation & Packaging: Includes original printed SGC installation manual and factory shipping box labeled with Serial #R1378459

Key Features

• 1.8 to 60 MHz Continuous Coverage: Broad-band automatic matching from 160m through 6m amateur bands

• 100W PEP Power Capacity: Handles 3W to 100W PEP / CW input power levels

• Universal Antenna Compatibility: Tunes random end-fed wires, whips, loops, dipoles, backstays, and coax-fed antennas

• Microprocessor Memory System: Fast tuning memory recalls previous settings in milliseconds

• Weather-Resistant Enclosure: Sealed rugged case built for marine, mobile, outdoor field, or base installations

• Simple 4-Wire Hookup: Operates using standard 12V DC power and RF cable connection

What's Included

• SGC SG-237 HF-VHF Smartuner Unit (Serial #R1378459)

• Integrated Coaxial RF Input Cable

• Original SGC Printed Installation Manual

• Original SGC Factory Box

Warranty

Comes with our 90-Day Warranty!

S/N: R1378459

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