Topband: Use shunt fed tower

[daraymond at iowatelecom.net]

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




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