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Re: Topband: Use shunt fed tower

To: wb6rse1@mac.com, Topband <topband@contesting.com>
Subject: Re: Topband: Use shunt fed tower
From: F Z_Bruce <k1fz@myfairpoint.net>
Reply-to: k1fz@myfairpoint.net
Date: Sun, 16 Sep 2018 00:57:54 -0400
List-post: <mailto:topband@contesting.com>
Steve,

Think you are doing a great job considering the lot size.    Never know what 
else is in the mix. The power line neutral (ground)  may. be helping
Someone years ago fastened to a metal sewer line.

73
Bruce-k1fz
https://www.qsl.net/k1fz/beverage_antenna.html


On Sat, 15 Sep 2018 19:36:13 -0700, Steve Lawrence via Topband  wrote:

217 DXCC 36 Zones. Shunt fed tower. No radials. West Coast city lot.  I can 
only imagine my totals if it really worked. 

73 Steve WB6RSE 

> On Sep 15, 2018, at 5:42 PM, John Harden, D.M.D.  wrote:
> 
> A shunt fed tower requires radials period. It cannot work without them! 
> 
> 73,
> 
> John, W4NU
> 
> Sent from my iPhone
> 
>> On Sep 15, 2018, at 1:55 PM,   wrote:
>> 
>> It makes no difference how the tower is fed, a vertical antenna must have 
>> radials of some kind to be effective.      73. . .Dave, W0FLS
>> 
>> -----Original Message----- From: cfytech24x7
>> Sent: Saturday, September 15, 2018 11:29 AM
>> To: topband@contesting.com
>> Subject: Topband: Use shunt fed tower
>> 
>> A shunt fed tower is a vertical antenna so it offers lowest take off angle. 
>> Shunt feeding avoids need for radial field.  Any horizontal wire antenna is 
>> going to put most of your radiated energy out at high angles, unless you can 
>> get it at least a half wavelength of height.  A loop may be a quieter 
>> antenna for RX but your existing inverted Vs are no doubt better for TX.
>> There is some art and experimentation involved in the matching but the 
>> results will be worth the effort.  I  would start with your highest antenna 
>> for top band, next highes for 80m. Note that your yagis will act nicely as 
>> capacitive hats to add to effective tower hight.
>> Gl es 73, ab1vl chuck
>> 
>> 
>> 
>> 
>> Sent from my Galaxy Tab® A
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