[Antennas] top band antenna

[DJED1 at aol.com]

In a message dated 10/30/05 6:14:38 PM, ka4inm at tampabay.rr.com writes:


> http://www.kintronic.com/site/techpapers/KTL_NAB_Paper.pdf
> 

Nice article, and not a design that requires a miracle to work.   Not a 
breakthrough, but a nice competent engineering design.   It looks like a fat, 
top-loaded monopole, with the four vertical segments fed in phase.   The radiation 
from the horizontal elements tends to cancel out, thus giving mostly vertical 
polarization.   At about 1/10 of a wavelength, top loading should work fine to 
give performance close to a quarter-wave monopole.   I expect for amateur use 
you could just connect the four downleads together and match at the base 
using an antenna analyzer and lumped elements.   But remember, they did lay down 
120 1/4 wavelength radials, which helps the radiation efficiency a lot.   
Sounds like a great 80 meter antena too, if I could just fit the radials onto my 
suburban lot. 
Ed   WB2LHI