[amsat-bb] Subject: Re: Antenna Question

[Mike Ryan]

Hello all,

Now that I was remionded to look, my qhtenna units came with a 1 page assemby instructions and drawing that includes lengths of rods and phasing harness. I'd be glad to scan/post it somewhere if anyone wants it.


Mike WB1AAT
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Message: 4
Date: Sat, 04 Jul 2009 20:45:22 +0000
From: Nigel Gunn G8IFF/W8IFF <nigel at ngunn.net>
Subject: [amsat-bb] Re: Antenna Question
To: George Henry <ka3hsw at att.net>
Cc: amsat bb <amsat-bb at amsat.org>, Jim Jerzycke <kq6ea at pacbell.net>
Message-ID: <4A4FBF62.3090406 at ngunn.net>
Content-Type: text/plain; charset=UTF-8; format=flowed

I would suggest that you don't need a phasing line if the dipoles are spaces a quarter wave and that both are fed by 
equal length cables.

George Henry wrote:

> Looking at the pictures, it appears that the dipoles are separated by about 
> 1/4 wave in free space, which is physically longer than a 1/4 wave phasing 
> line would be.  And I'd think that the phasing line would have to be 1/2 
> wavelength, after introducing a 1/4 wave offset between the dipoles, 
> correct?