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Old December 13th 05, 11:45 AM posted to rec.radio.shortwave
 
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Default To RHF, et al. Re Loops

A 1 wavelength loop has a pattern nearly identical to a half wave
dipole-
i.e. figure 8, slightly less gain than the dipole, and narrower
bandwidth.

At other lengths, the loop, like a center fed wire, will devleop
multiple
nulls. Of course, like the dipole at low heights, the nulls tend to
fill in.

IMHO, I fail to understand the fascination with the loop configuration.
If
it is a "quieter" antenna than a dipole ( and I can see no reason for
this
other than the idea that it is a DC short) then a dipole could be made
equally quiet by placing a suitable choke across the center insulator.

Take off angle is identical to a dipole at the same height.
Dale W4OP
.................................................. ...............................

I fully agree...Note the post I just made, before I read this one..
And a loop is most certainly *not* a quieter antenna than a dipole,
*except* in cases of corona problems. If there is no corona, or
static buildup, there is no advantage at all. And you would need to be

in the mountains like HCJB to really see the advantage. It was the
corona
problems at HCJB which led to the use of the loops at that station.
Had nothing to do with the antenna performance in itself.
Like I've said, RHF is an enthuthiastic sort, but he comes up
with some hokey ideas about antenna theory at times.
RHF, you need to invest in some good antenna books. IE: ARRL antenna
handbook, etc.. Your "intuition" is leading you astray...
MK