> At 09:47 AM 2006-08-12, JMLTINC@aol.com wrote:
>>I am new to the reflector and have a burning need to learn about small
>>(less
>>than .1wl), shielded (coax) magnetic loops. Specifically, I would like a
>>source of design formulae (are ON4UN's accurate and complete on this
>>subject?),
>>would like to know how distributed capacitance of the coax affects size
>>and
>>matching, would like to know how diameter of the loop and of the coax
>>change
>>characteristics of the loop, and why most designs use RG-59 coax.
>>
>>Is there a definitive read on this subject?
____
> Start here: http://www.w8ji.com/magnetic_receiving_loops.htm
>
> 73, Terry N6RY
____
I agree with N6RY ... and be VERY careful about some of the early ham radio
references you may find. These loops were not well understood by the ham
community -- which is surprising since the key reference books had excellent
explanations. They are EE-level, but good info can be gleaned by an
interested semi-technical ham.
Frederick Terman, RADIO ENGINEER'S HANDBOOK, 1st. ed., 1943
John Kraus (W8JK), ANTENNAS, 1st ed.,1950
Henry Jasik, editor, ANTENNA ENGINEERING HANDBOOK, 1st. ed., 1961 (mainly
Ch.28 on Direction-Finding Antennas)
73, Gary
K9AY
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