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Good (extremely skeptical) article on "How the Microvert Works", and lots of radio history stuff, with some cool photos.
to antenna ham history microvert radio retrotech ... on 08 February 2010
More analysis. The basic stuff is interesting, but then it... stops.
to aerial amateur eh hf microvert radio small-aerial ... on 09 January 2010
Radiating feeder: Applying a theory.
More Microvert/EH analysis, with suggestions on taking advantage of feedline radiation.
to aerial amateur eh hf microvert radio small-aerial ... on 09 January 2010
Another small HF aerial design, but this one's explicitly designed to use the download as a counterpoise. This appears to be the approach that Firestik's no-ground-plane antennas use. The PDF gives all the design equations, which is nice.
to aerial amateur hf microvert radio small-aerial ... on 09 January 2010
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tasty by Adam Sampson.