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 ------------------------------
Message: 4 Date: Sat, 04 Jul 2009 20:45:22 +0000 From: Nigel Gunn G8IFF/W8IFF nigel@ngunn.net Subject: [amsat-bb] Re: Antenna Question To: George Henry ka3hsw@att.net Cc: amsat bb amsat-bb@amsat.org, Jim Jerzycke kq6ea@pacbell.net Message-ID: 4A4FBF62.3090406@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?
True, but since the QST article mentioned a phasing line, I was trying to figure out his design.
George, KA3HSW
----- Original Message ----- From: Nigel Gunn G8IFF/W8IFF nigel@ngunn.net Subject: [amsat-bb] Re: Antenna Question To: George Henry ka3hsw@att.net Cc: amsat bb amsat-bb@amsat.org, Jim Jerzycke kq6ea@pacbell.net
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?
participants (2)
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George Henry -
Mike Ryan