Dear friends,
We all know that the height of a dipole over the ground deeply
influences the take-off angle of a horizontaly polarized antenna. With a
higher antenna we should expect a lower radiation angle. Right?
Well, we also know that for 80m we need at least 1/2 wavelenght in order
to obtain a 30 degrees angle. For that we need a very high tower! But if
we install a dipole for 80 meters on the top of a very tall building?
What happens? Can we expect a low angle or not, or there are more
parameters involved on it?
Thanks in advance,
Carlos - PY1CAS
E-mail: py1cas@ax.apc.org
--
FAQ on WWW: http://www.contesting.com/towertalkfaq.html
Submissions: towertalk@contesting.com
Administrative requests: towertalk-REQUEST@contesting.com
Problems: owner-towertalk@contesting.com
Search: http://www.contesting.com/km9p/search
|