"Randy Yates" wrote in message
...
Hi Folks,

This is my first post to this group. I'm a EE, so I've
had all the theory - now I want to know how these things
work.

Basically, my question is this: how can a a TV antanna
cover, what, 60 MHz to 800 MHz? That's over three octaves,
and if the antenna elements are designed to be a fixed
portion of a wavelength, why does this work over such a
large range?
--
% Randy Yates % "So now it's getting late,
%% Fuquay-Varina, NC % and those who hesitate
%%% 919-577-9882 % got no one..."
%%%% % 'Waterfall', *Face The Music*, ELO
http://www.digitalsignallabs.com

The more elements it has, the better it works. So a cheap one doesn't work
very well due to few elements. But there are ways to spread the bandwidth of
elements by making a radiator out of V-shaped pieces of metal or tubes or
wires in a V configuration - - the thicker the elements, the wider the
bandwidth. Also configurations related to the log periodic array widen the
bandwidth. A UHF antenna in the form of a single circular loop evidently has
a wide bandwidth.