On Mon, 20 Sep 1999 11:41 EDT W4nf@aol.com writes:
>
> The middle set will be 76' long so I thought I would break it up as
> follows
> starting from the tower and going down to the anchor: 4' - 54' - 18'.
>
> The top set will be 92' long and I was going to break up as follows:
> 4' - 54' - 27' - 7'.
>
> Please tell me if I'm doing anything fundamentally wrong with this
> approach.
> I would prefer to keep them as long as possible as I'm going broke
> already with the purchase of the antennas, etc.
>
> Thanks for your help. Jack W4NF
>
You are wise to place an insulator as close to the tower as possible.
This prevents coupling from your Yagi to the guy wire immediately
under it. I like to then use one or two 12 ft sections before going
to longer pieces (27 or 40 or 54 ft). The 12 ft pieces are 25%
shorter than 1/2 WL on 10 M and therefore "nearly" invisible
in the HF spectrum. (My guys are 4 - 12 - 12 - 27 etc)
If you want to minimize the number of insulators and stick with
the lengths listed above, I would reverse the order in the top set
to 4 - 27 - 54 - 7.
de Tom N4KG
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