Tiny QRP EFHW Kit

Name: Tiny QRP EFHW Kit
SKU: 23009
Price: 15.00 USD
Availability: InStock
Rating: 5.00 (1 reviews)

(1 Review)

A complete kit to make your EFHW 1:49 to 1:81 UnUn for QRP, rated for 10 watts (option 15 watts is available)

Designed by HB9ZHK in Switzerland

2023-02-05T18:57:49.986Z-Winder with Wire.jpg

2023-02-05T18:57:49.986Z-Winder without Wire.jpg

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A complete kit to make your EFHW 1:49 to 1:81 UnUn for QRP, rated for 10 watts (option 15 watts is available)

What is it? A kit based on a custom PCB board to build your QRP EFHW UnUn. The kit contains all you need to build your own tiny EFHW antenna (PCB, FT50-43 toroid, 100pF capacitor, BNC connector and m…

What is it?

A kit based on a custom PCB board to build your QRP EFHW UnUn. The kit contains all you need to build your own tiny EFHW antenna (PCB, FT50-43 toroid, 100pF capacitor, BNC connector and magnet wire for the toroid).

This is a kit and needs assembly. You will need to wind the toroid with the magnet wire, solder the toroid, the BNC connector and a SMD capacitor to the PCB board (the capacitor can be omitted resulting in a slightly higher SWR on higher frequencies).

The kit contains: 1 PCB 1 female BNC connector 1 FT50-43 ferrite toroid (see also options) 1 0805 SMD capacitor 100pF/500V Enough magnet wire

The antenna wire mounting holes are suitable for wires up to 1.5mm diameter (with insulation). The holes can be extended with a driller for slightly thicker wires.

Why did you make it?

Working primarily QRP, often portable I wanted to have a minimal system as lightweight as possible. Often, antennas make up a considerable amount of space and weight of the overall system and I looked into ways to minimize this.