📡 End-Fed Half-Wave (EFHW) Antenna – Portable HF Performance Made Simple

Designed for portable operators, field deployments, and emergency communications, our EFHW (End-Fed Half-Wave) Antenna is built directly onto a custom 3D-printed wire winder, creating a rugged, compact, and easy-to-deploy antenna system that travels as well as it performs.

Whether you're activating a park, climbing a summit, participating in Field Day, or setting up an emergency station, this antenna is engineered for reliability and convenience in the field.

Features

🔧 Custom 3D-Printed Wire Winder

• Compact and durable design
• Quick deployment and easy storage
• Helps prevent wire tangles during transport

📡 49:1 Transformer Design

• Built using a high-quality 240-43 toroid
• Wound in a proven 49:1 impedance transformer configuration
• Includes a 100pF capacitor for efficient HF operation

🧵 70 Feet of 18-Gauge Stealth Wire

• Strong, flexible, and lightweight
• Low-visibility design for discreet installations
• Ideal for portable and temporary deployments

🔌 Connector Options

• Available with either SO-239 or BNC connector
• Choose the configuration that best matches your station setup

Band Coverage

✅ Naturally Resonant:

• 40 Meters
• 20 Meters
• 15 Meters
• 10 Meters

✅ Operates with a Tuner:

• 17 Meters
• 12 Meters

Performance on 17m and 12m may vary depending on installation height, surrounding environment, and operating conditions.

Built for Portable Operations

Perfect for:

🏞️ Parks on the Air (POTA)

⛰️ Summits on the Air (SOTA)

📡 Field Day Events

🚨 Emergency Communications

🏕️ Camping & Overlanding

🎒 Portable HF Operations

Tuning Information

Each antenna is shipped untuned, allowing you to trim and optimize the antenna for your preferred operating frequency and installation environment. This ensures the best possible performance for your specific operating needs.