[TowerTalk] 10m OWA 24'

[Larry]

I had a copy of the article and sent the dimensions direct to Joern.

73, Larry  W6NWS
----- Original Message ----- 
From: "Bob" <rabisch at hotmail.com>
To: "Joern DK5TT" <dk5tt at opretzka.de>; <towertalk at contesting.com>
Sent: Monday, November 02, 2009 4:54 PM
Subject: Re: [TowerTalk] 10m OWA 24'


> If you change the taper or size of the elements it will change the
> performance.
>
> Another possibility would be to start with a Hygain 105CA which is on
> a 24' boom.  By adding one element you can make it into a 6 element
> 10 Meter OWA on a 24" boom.  Using YW (yagi for windows optimizer
> program) you can obtain:
>
> (these numbers assume the antenna is mounted at 32 feet)
>
> Freq (MHz)  28.0   to  29.0
> Gain (dBi)  15.54  to  15.84
> I/I  (dB)   22.4   to  23.03
> SWR         1.11   to  1.05
>
> Element Taper (in): 1.045    .875    .625    .438
> Element Spacing (in):  0    49    68   133   194   283
>
> I can't recall the dimensions or the reference but someone also came up 
> with
> a dummy element made out of PVC to rebalance the beam.
>
> Nice way to eliminate the hairpin and have a flat SWR across 1MHz of the 
> 10M
> band.
>
> It all depends on what you have available to work with.
>
> Bob
> K4QHH
>
> --------------------------------------------------
> From: "Joern DK5TT" <dk5tt at opretzka.de>
> Sent: Monday, November 02, 2009 9:13 AM
> To: <towertalk at contesting.com>
> Subject: [TowerTalk] 10m OWA 24'
>
>> Hi,
>>
>>
>>
>> there seems to be a OWA design by NW3Z for a 6 element 10m yagi on a 24'
>> boom (with 50 ohms feedpoint impedance).
>>
>> Unfortunately the OWA website on contesting.com is no longer alive.
>>
>> Can anybody help me out with the AO file or dimensions?
>>
>>
>>
>> Thanks,
>>
>> Joern
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>> _______________________________________________
>>
>>
>>
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>>
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