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Re: Topband: raised radials

To: Carl <km1h@jeremy.mv.com>
Subject: Re: Topband: raised radials
From: DAVID CUTHBERT <telegrapher9@gmail.com>
Date: Sat, 15 Dec 2012 08:46:06 -0700
List-post: <topband@contesting.com">mailto:topband@contesting.com>
That is quite an improvement. I had to have dropped the base impedance from
400 ohms to 40 ohms for it to do that.

    Dave WX7G

On Fri, Dec 14, 2012 at 1:12 PM, Carl <km1h@jeremy.mv.com> wrote:

> A ground screen mesh extending out at least 25' from the base would
> reduces losses considerably since just 10-20 radials has little effect.
> At a prior QTH, going from 100 radials of 60-130' to spokes of 4' x 50'
> rabbit wire mesh on top of them made the difference between also ran and
> pileup busting on 160. Id call that at least 10dB in anybodys book.
>
> My soil was like beach sand altho 20 miles from the ocean; likely leftover
> from the iceage roll back.
>
> ----- Original Message ----- From: "David Michael Gaytko // WD4KPD" <
> wd4kpd@suddenlink.net>
> To: <topband@contesting.com>
> Sent: Friday, December 14, 2012 2:04 PM
> Subject: Topband: raised radials
>
>
>  the more i read, it seems raised radials are a fairly easy way to raise
>> the effeciancy of a short vertical.
>>
>> i have a hy-gain 18ht with base loading.  can i use these raised radials
>> with this antenna, and if so how to do it.  it is impossible to raise the
>> whole antenna to get the base off the ground.
>>
>> david/wd4kpd
>>
>>
>> --
>> God's law is set in stone..everything else is negotiable.
>>
>> ______________________________**_________________
>> Topband reflector - topband@contesting.com
>>
>>
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> ______________________________**_________________
> Topband reflector - topband@contesting.com
>
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