[TowerTalk] 40 meter beam

[Gedas]

If it will be of any help I seem to remember measuring all 4 of mine and 
got an average value of ~13.8 uH.

Gedas, W8BYA EN70JT

Gallery at http://w8bya.com
Light travels faster than sound....
This is why some people appear bright until you hear them speak.

On 9/27/2020 3:57 PM, Jim Thomson wrote:
> Date: Sat, 26 Sep 2020 21:10:47 -0400
> From: <john at kk9a.com>
> To: <towertalk at 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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