I would not recommend feeding an HF quad with vertical polarization. If
you do that, the antenna pattern is no longer reinforced by ground
reflections, and you end up with something that has less than free space
gain. If you have a UHF antenna that is far enough above ground to not
care about ground reflections, then maybe it doesn't matter.
Jerry, K4SAV
George P. wrote:
>Michael,
>Quads rule. 4 elements minimum and you'll be on top. Set driven element up
>for both vertical AND horizontal. Use same feedline length for each
>polarity, and you can play with circular polarization if you add 90 degrees
>phase length (1/4W) in one of the feedlines. Vertical is great for late
>night ground wave for mobile contacts, state to state <200 miles and the
>local repeaters. You may e-mail me for more info on how to set it up. When
>the band dies... there's always guys on groundwave using A99 verticals.
>George AB2KC
>
>----- Original Message -----
>From: "Michael Mark" <m2eng@mts.net>
>To: <towertalk@contesting.com>
>Sent: Friday, January 06, 2006 8:32 PM
>Subject: [TowerTalk] 10 Meter Beams - Any IDEAS
>
>
>
>
>>I like contesting and have the Canadian 10M Phone LP SSB record which I did
>>in 1991 with about 2500 QSO's.
>>
>>I used a Hy Gain LJ105 on a 48' tower back then at my old QTH.
>>
>>I have a couple of bucks now so I want something better for the upcoming
>>Sunspot Cycle increase.
>>
>>I have a 48' tower at my office building with nothing on it.
>>
>>As well, my flat building roof is 65' x 45' with 16' in height.
>>
>>I have new: A Stack Match for 2 antennas, new Ham IV and 2 Hy Gain
>>LJ105CA's and a Glen Martin 8' Roof tower.
>>
>>I was also considering a M2 10M7 or a Force 12 MAG 810 as well.
>>
>>Just asking for some ideas or experiences from you Contesters about your
>>10M antenna recommendations.
>>
>>Tnx
>>
>>Michael Mark, P.Eng., VE4MM
>>_______________________________________________
>>
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>>
>>
>
>
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