[TowerTalk] TowerTalk Digest, Vol 100, Issue 63

[Richard (Rick) Karlquist]

Fed from the bottom with series inductor and shunt capacitor.
You can now buy a version of this from Par Electronics.

Rick N6RK

On 4/24/2011 6:11 PM, Gary Schafer wrote:
>
> Rick,
>
> How did you feed the 1/2 wave vertical. From the center or the bottom?
>
> 73
> Gary  K4FMX
>
>> -----Original Message-----
>> From: towertalk-bounces at contesting.com [mailto:towertalk-
>> bounces at contesting.com] On Behalf Of Rick Karlquist
>> Sent: Sunday, April 24, 2011 7:21 PM
>>
>> It is difficult to feed a vertical dipole in the traditional
>> way in the center without the feedline affecting the pattern.
>> It is also tricky to feed it from the bottom, as a half wave
>> vertical.  I did some direct A/B tests comparing a 1/4 wave
>> vertical to a 1/2 wave vertical on 20 meters.  They were
>> virtually indisinguishable, with maybe a slight edge going
>> to the 1/2 wave vertical.  You can call that a vertical dipole
>> if you want.  It had no radials by the way, while the 1/4 wave
>> vertical had 32 1/4 wave radials. YMMV.
>>
>> Rick N6RK
>>
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>
>