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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 |
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