Topband: Use shunt fed tower

[daraymond at iowatelecom.net]

Any antenna can work. . . it's a question of degree.

-----Original Message----- 
From: Steve Lawrence
Sent: Saturday, September 15, 2018 9:36 PM
To: John Harden, D.M.D.
Cc: daraymond at iowatelecom.net ; topband at contesting.com ; cfytech24x7
Subject: Re: Topband: Use shunt fed tower

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. <jhdmd at bellsouth.net> 
> 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, <daraymond at iowatelecom.net> 
>> <daraymond at iowatelecom.net> 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 at 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
>> _________________
>> Topband Reflector Archives - http://www.contesting.com/_topband
>> _________________
>> Topband Reflector Archives - http://www.contesting.com/_topband
>
> _________________
> Topband Reflector Archives - http://www.contesting.com/_topband