Mike WA8BXN wrote > I think elevated radials need to be tuned, that is a particular length for > a > given band. If you will be operating multiple bands, a set is needed for > each band.
If elevated radials are not tuned and not quarter wave, the efficiency may be even higher than with quarter wave radials but the feed point is likely to be at a very high voltage. This requires either very high impedance chokes or transformers. No radial verticals are case in point. There is a 160m vertical with innovative elevated radial (http://www.w0uce.net/K2AVantennas.html). It is equivalent to two elevated radials and coil. There is an anecdotal information that this vertical works much better than a vertical with many short ground radials. Ignacy, NO9E -- View this message in context: http://elecraft.365791.n2.nabble.com/OT-Radials-for-Vertical-Antenna-tp7576089p7576111.html Sent from the Elecraft mailing list archive at Nabble.com. ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
