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Locked Re: VLF receiver antenna to monitor the sun for SID activity


 

Good morning Alan,

I have a question about the design of wire loops.? There are those with manufactured multi wires in one harness and the ribbon cable and the capacitance issues.? You mentioned a wire loop with evenly spaced wire, and I am assuming that would be of flat design like a disc starting either on the inside or the outside but flat.? What about making the wire antenna like a tube where the beginning and the end of the tube are at the same diameter?? Could you achieve directivity and would the capture area be the same?

Just a question regarding wire antennas.

Fred
N4CLA

On Sat, Mar 18, 2023 at 11:13?AM Alan <g8lco1@...> wrote:
Using multicore cable of any kind seems to be a neat way of making a
loop BUT the capacitance between turns is very high for flat ribbon
cable and multiconductor bundled cables so you end up with a somewhat
deaf low Q antenna which has limited tuning. If you make a same size
loop using spaced turns then the sensitivity and tuning range will be
much better.

A path that many have taken!

73, Alan G8LCO.

_,_





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