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Re: Topband: 160 top loaded vertical question (Kees Nijdam)

To: Topband <topband@contesting.com>
Subject: Re: Topband: 160 top loaded vertical question (Kees Nijdam)
From: W7RH <midnight18@cox.net>
Date: Wed, 7 Feb 2018 17:53:57 -0800
List-post: <mailto:topband@contesting.com>
Kees,

A 50 ft high vertical with two top hat loading wires each equal length about 67ft will work great with a good ground field. It can easily be fed with a 4-1 toroidal transformer 50-12.5 Ohms. Absolute minimum radial field would be 30 1/4 wave radials adding as many possible short radials in space if required.

A small inductive coil wound on base insulator can easily tune the antenna to the band segment you want. Use large diameter copper tubing.

73


Bob

--
W7RH DM35OS


It has become appallingly obvious that our technology has exceeded our humanity.

Albert Einstein

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