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![]() Dick Carroll; wrote: Len Over 21 wrote: In article , "Dick Carroll;" writes: JJ wrote: Len Over 21 wrote: Incorrect. The word "dipole" refers to anything with two elements and a polarity. [a "monopole" is a single element with no polarity] A dipole ANTENNA refers to a wire type having two elements of wires, balanced-fed from the center with RF voltage in opposition. The length of this dipole antenna may be ANY length, from near-infinitesimal (fractional wavelength) to many wavelengths. The radiation pattern of the dipole antenna will vary based on many factors: length relative to wavelength, distance above ground or other imperfect conductor being the two most affecting patterns. Len is correct, dipole simply means two separate elements (di means two). A dipole of a certain length will be a half wavelength at xx frequency, a quarter wavelength at yy frequency and a full wavelength at zz frequency and so on. OK jj, kindly give us ONE example of a 1/4 wave dipole..... A 40m half-wave dipole used on 80m... :-) I rest my case.... Which means it is still a dipole but since it is being used on 80 meters it is now a 1/4 wavelength dipole. |
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