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"Cecil Moore":
Jimmie D wrote: One such mistake is calling a 4 ft long antenna that has a coil to make it resonate on the 10M band a "10M loaded 1/4 wavelength antenna". They should be more careful and specify that they are talking about electrical lengths, not physical lengths. ______________ They also should point out that, although a radiator physically/electrically shorter than needed for first self-resonance can be "loaded" to resonance, this does not mean that loaded and self-resonant radiators perform equally well in an installed system. In some applications there can be as much as a 100:1 difference in their radiated powers, for a given power at the transmitter output connector. RF |