The individual elements are most commonly half wave dipoles, although they sometimes contain parasitic elements as well as driven elements.
2.
Antenna gain can also be measured in dBd, which is gain in Decibels compared to the maximum intensity direction of a half wave dipole.
3.
Since a half wave dipole is used, its antenna ( \ mbox { 2.15 dBi } = 1.64 ) should also be taken into consideration,
4.
A major practical drawback to this band is that because of the length of the waves, full size resonant antennas ( half wave dipole or electrically short, a small fraction of a wavelength long.
5.
The antenna itself consisted of a series of 36 half wave dipoles backed with reflectors, arranged in three bays, each bay with twelve dipoles arranged in a three-high four-wide stack . ( Later production versions of the SCR-270 used 32 dipoles and reflectors, either eight wide by four high ( fixed ) or four wide by eight high ( mobile ) ).
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