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[TowerTalk] 40 meter beam

To: "kj6y--- via TowerTalk" <towertalk@contesting.com>
Subject: [TowerTalk] 40 meter beam
From: "Jim Thomson" <jim.thom@telus.net>
Date: Sun, 27 Sep 2020 12:57:30 -0700
List-post: <mailto:towertalk@contesting.com>
Date: Sat, 26 Sep 2020 21:10:47 -0400
From: <john@kk9a.com>
To: <towertalk@contesting.com>
Subject: Re: [TowerTalk] 40 meter beam

<I believe Cushcraft uses 68 turns of 12 AWG wire. There are much more
<efficient loading coil designs that are also more durable.

<John KK9A

##  https://www.qsl.net/ve6wz/CC_coil.html    Just about anything is better  
than  68 turns of 12 gauge magnet wire..with turns  butted  tight.. 
The latest version of the  coil software by  k6sti is called    3.95   
http://ham-radio.com/k6sti/   scroll to bottom of left side of page.
Coil Inductance and Q Calculator 3.95



.75 inch  OD  aluminum  tubing,  like  3003 is  very easy to work with.  
Mcmaster carr  sells it, and other  sizes.

Jim   VE7RF
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