Rugged and Reliable, The No-Tune Linked End Fed Half Wave for 40 - 20 - 15 and 10 Meters is a fantastic antenna choice for Portable, Stealth, Base, Outdoor and Park Operating with 100 Watts. Available with BNC or SO 239 Connectors. This is a complete, ready-to-use antenna system.

The No-Tune End Fed Half Wave (EFHW) antenna is a rugged, lightweight, and portable solution for amateur radio operations on 40, 20, 15, and 10 meters, ideal for SOTA, POTA, Field Day, and stealth HOA installations. Rated for 100W, this fully assembled system is engineered for rapid deployment and reliable multi-band performance without a tuner.

For $119.95 you will receive:

• One original, newly fabricated, ready to use No Tune End Fed Half Wave antenna as depicted in the photos, tested and described below. Made in America, by Hams for Hams with materials sourced from U.S. sellers.

• A 8" removable wire grounding anchor with ring terminal

• 304 Stainless Steel Half-Wave Element and Ground Lug Hardware

• A BNC or UHF end protector cap. 

• A drawstring carry pouch as pictured

• Free Shipping within the United States

• 30-day Free Returns

  
  

Performance Characteristics:

​The EFHW design balances portability and multi-band functionality, with trade-offs in efficiency compared to a dipole. Its 65 ft radiating element supports harmonic operation on 40m (1λ/2), 20m (2λ/2), 15m (3λ/2), and 10m (4λ/2). The 18 AWG wire and stainless steel hardware ensure durability and corrosion resistance, while the lightweight (14 oz) construction and compact storage (9" x 7" pouch) make it ideal for portable use. The antenna’s directional radiation pattern performs best in sloper or Inverted L configurations, delivering reliable QSOs up to 100 Watts SSB. 

Applications:

Portable Operations: SOTA, POTA, and Field Day, with rapid setup and no-tune convenience.

Stealth Installations: Discreet design for HOA-restricted environments,etc.

Emergency Communications: Lightweight and robust for EmComm deployments.

Technical Specifications:

Frequency Coverage: 40m, 20m, 15m, 10m; no external tuner required due to harmonic resonances.

Impedance Matching: 49:1 transformer with a Fair-Rite FT140-43 toroid core, featuring a 2-turn primary bifilar winding for efficient power transfer across bands.

Radiating Elements: 2 Elements connected by bullet connector: ~32 ft (half wave at 20M)  ~65 ft (half-wave at 40m) of 18 AWG UL 1007 stranded copper wire, optimized for flexibility, durability, and portability.

Enclosure Options:

Color/Connector choice Custom 3D-printed ASA weatherized enclosure (color options; BNC or SO-239).

Weight: ~14 oz (0.875 lbs), including all components, for ultra-portable operation.

Connectors: BNC or SO-239 (PL-259 compatible) female connector for coaxial feedline.

Grounding: Includes 8" grounding anchor and stainless steel ground lug; optional counterpoise recommended.

Radiation Pattern: Moderately directional, with primary lobes aligned with the antenna’s axis. Effective with 10-15W input power (field results shown on K2CJB Radio and Outdoors on the Air YouTube channels).

Deployment Configurations:

Supported Topologies: Sloper, Inverted L, Inverted V, vertical, zig-zag, or rhombic, adaptable to environmental constraints.

Installation Requirements: Elevate the matching unit 8-12 inches above ground to minimize losses. Maximize the height of the radiating element’s far end for optimal radiation efficiency.

Counterpoise: Optional, user-supplied counterpoise enhances performance, especially on 10m.

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