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christofire wrote:
Magnetic antennas are sometimes considered beneficial for mobile reception of medium/lomg-wave signals because they can be made insensitive to electric fields, ... A magnetic antenna was used in all of the California 75m mobile antenna shootouts that I attended. I was told it was to keep the close-by human bodies from having an effect on the strength of the received signals. Which leads me to a question: Most of us OFs have witnessed the effects of human bodies on analog VHF TV signals being received using rabbit ears. If we used "magnetic rabbit ears", would the problem go away? Is it only the electric field that varies when an EM signal passes through a non-magnetic medium like a human body - or a tree? -- 73, Cecil http://www.w5dxp.com |
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