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Magnetic Loops
In message , rickman
writes I've a 5 foot Octagonal loop for MF. The shield is copper water pipe, with a gap , 7 turns inside plus a coupling winding. It does a good job eliminating local noise (mostly ASDL hash from the phone lines) compared with a vertical. However the capacitance between the shield and turns seems to load it quite a bit meaning I can't get the tuning range I'd like. I assume there is nothing to space the wires from the pipe other than the insulation. Maybe you could use wire with thicker insulation? Or if you are using straight pipe, could you use a fabricated spacer at the corners? I guess that might be hard to assemble with soldering the joints. No just the insulation. It was hard enough to thread it without spacers .. I should have stuck to the original design that used plastic pipe with aluminium foil stuck to the outside Brian GM4DIJ -- Brian Howie |
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