Richard Clark wrote:
On Mon, 27 Nov 2006 23:56:04 -0500, jawod wrote:


I am preparing to set up a 2nd wire antenna at approx 90 degrees from my
G5RV. This antenna is a purchased folded dipole from DX
Engineering. It'll be connected to 400 ohm twin lead to a 4:1 Balun (DX
Engineering again) and then RG8/U into the shack.

Is it better to place it 90 degrees from the center or from one of the
ends? The ARRL Antenna Book shows both methods.


Hi John,

Why all the care for technical description, and then form a question
appealing to aesthetics? Better?

"Better" is the parent to all answers both planned and ill-conceived.
I am forced to fill in the rhetorical blank left there as to you
meaning "would there be any impact that exceeds 1dB on way or the
other if the antenna were placed, say, diagonally to the G5RV."

Probably not.

However, this direct answer returns us to the semantic word-chase of
just what is meant by "better" and to what degree it is measured.

Another fill in the rhetorical blank: "would it affect the tune of
both/either to more than 10KHz? if the antenna were placed, say,
diagonally to the G5RV."

Probably, but "better" is relative to the distance in terms of
wavelength, and as the G5RV is a multiband antenna, and the new one
comes without pedigree, then that relativity is strained.

However, you do not express any inclination for the diagonal, but it
comes by association with center placement vs. end placement. The
crossed antennas of dipoles find each in the other's null; however,
what of dipoles crossed not like an X but rather like a T, or an L?

Interesting question that could be easily examined in 10 minutes by
the free version of EZNEC. My aesthetics demand a 1db variation or a
10Khz shift. They are met on the one, but not the other - this says
nothing of your sense of "better." The T and the X lead, whereas the
L and especially the diagonal push the envelope.

73's
Richard Clark, KB7QHC
Richard

"You shore do talk pretty"

I meant "better" as in which arrangement looks best strung with
Christmas lights, of course.

Based upon your microscopic linguistic analysis, I imagine you use a
Microsoft product (at least conversing with you is similar to using
one). I use an iMac. It won't do EZNEC (unfortunately).

BTW (seriously), will the new Mac products work with EZNEC?

and by "work" I mean ...

John
AB8O