DX Engineering TWIG End Fed Half Wave QRP Antenna Feedpoint Kits are a compact, essential component for building a low-power (QRP) end-fed half-wave antenna system. Perfect for portable operations and outdoor activities such as POTA® or SOTA™, this feedpoint kit simplifies setup while delivering reliable performance. The TWIG is rated for 25W SSB, 10W CW, and 5W digital, delivering an SWR of less than 2:1 without an antenna tuner.

At its core, the TWIG features a 49:1 transformer that matches the impedance of the user supplied half-wave element wire to 50-ohms, ensuring compatibility with most QRP transceivers. The BNC female connector pairs easily with recommended coax cables, and when the element wire is properly tuned, no external tuner is required—reducing the amount of gear you need to carry.

The kit includes a built-in quick connector designed for 24/26 AWG antenna wire, making element installation fast and secure. Two end insulators and clips are also provided, ensuring reliable strain relief and easy deployment of the antenna wire in the field. Installation is quick and straightforward, allowing you to get on the air fast and start making contacts. No additional counterpoise wire is necessary; the coax cable serves that function when installed correctly. For best results, use optional 24/26 AWG wire such as CEW-VIZ24-YEL100, a high-visibility, PVC-insulated stranded copper wire.

A typical setup uses a sloper configuration, with the feedpoint about 6–7 feet above ground and the wire sloping upward to 25–30 feet. Recommended coax length is 25–35 feet with BNC connectors and adding an optional DXE-LPFC-BNC Feedline Choke at the transceiver end is suggested. While the antenna supports multiple configurations, wire length will vary based on installation.

Key Features

- Integrated Quick-Connect System: Built-in quick connector for 24/26 AWG antenna wire ensures fast, secure element installation. Includes two end insulators and clips for reliable strain relief and easy wire deployment in the field.

- Efficient Impedance Matching: Features a 49:1 transformer that matches the impedance of the half-wave element wire to 50-ohms, delivering an SWR of less than 2:1 without an external tuner when using properly tuned wire antenna elements.

- Portable and Lightweight Design: Compact size and minimal gear requirements make the TWIG ideal for portable operations such as POTA® or SOTA™, enabling quick setup and reliable performance in the field.

Optional Accessories:

• Element Wire: CEW-VIZ24 100ft. Antenna Wire – High Visibility, 24 AWG tinned stranded copper (7 x 32 AWG), Hi-Viz Yellow, Orange, or Pink PVC insulation.

• Coaxial Cables:

  • DXE-174VDB025 – 25 ft RG-174 Orange PVC jacket, BNC male connectors (between TWIG and optional low-power choke).

  • DXE-174VDB035 – 35 ft RG-174 Orange PVC jacket, BNC male connectors (between TWIG and optional low-power choke).

  • DXE-174VDB003 – 3 ft RG-174 Orange PVC jacket, BNC male connectors (between optional choke and QRP transceiver).

• Choke: DXE-LPFC-BNC Low Power Feedline Choke with inline BNC female connectors.

Additional Features and Specifications:

Power Ratings:

• 25W SSB

• 10W CW

• 5W Digital

Connector Type: BNC Female

Recommended Coax Length: 25–35ft. RG-174 with BNC connectors

SWR: Less than 2:1 without a tuner

Installation Height: Feedpoint approx. 6–7ft. above ground, sloping up to 25–30ft.

Typical Recommended Element Lengths:

Note: All lengths are approximate. The above lengths were verified during testing at DX Engineering. Your lengths may vary after adjustment with your antenna analyzer. Extra cut length is for wrapping at the End Insulator and for tuning.