I7SWX applies multi-band "Windom" of 3.5-28 MHz Fig.1. It has an input impedance of 300 Ohms and agreed with 75-Ohm coaxial cable with broadband transformer 4:1. The design of the transformer shown in Fig.2, 3. The antenna is used at a power of 200 watts VSWR less than 2.

Powered multi-band Windom coaxial cable
Fig.1


Fig.2


Fig.3

Author: Gian MODA (I7SWX). Translation from English. A. Gaisin (UZ1ZWD); Publication: N. Bolshakov, rf.atnn.ru

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