On Wed, 09 May 2007 13:11:01 -0700, Roy Lewallen
wrote:

wrote:

Wrong, it just means you didn't read the whole posting. The issue
with a doublet of two full half waves is feed impedence is very high
and a very poor match for coax. Feed it properly (voltage feed) and
it will perform better than a 40m dipole. . .

A full wave dipole has less than 2 dB more gain than a half wave dipole
at its best angle. It has gain equal to or more than that of a half wave
dipole over only 88 of the 360 degrees of coverage -- at all other
angles the full wave dipole has less gain. In fact, over 140 of the
total 360 degrees, the gain of a full wave dipole is more than 10 dB
less than that of a half wave dipole.

So in what way does the full wave dipole "perform better" than a half
wave dipole?

Roy Lewallen, W7EL
In the direction the lobe points. In general for an omnidirectional
antenna, it isn't as good.
--
73 for now
Buck, N4PGW

www.lumpuckeroo.com

"Small - broadband - efficient: pick any two."