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UHF half-wave dipole
UHF half-wave dipole
Dipole antenna used by the radar altimeter in an airplane
Dipole antenna used by the radar altimeter in an airplane
Cage dipole antennas in the Ukrainian UTR-2 radio telescope. The 8 meters (30 feet) long by 1.8 meters (6 feet) diameter galvanized steel wire dipoles
Cage dipole antennas in the Ukrainian UTR-2 radio telescope. The 8 meters (30 feet) long by 1.8 meters (6 feet) diameter galvanized steel wire dipoles have an operating frequency range of 8–33 MHz.
Length reduction factor for a half-wave dipole to achieve electrical resonance (purely resistive feedpoint impedance). Calculated using the induced EM
Length reduction factor for a half-wave dipole to achieve electrical resonance (purely resistive feedpoint impedance). Calculated using the induced EMF method, an approximation that breaks down at larger conductor diameters (dashed portion of graph).
"Rabbit ears" dipole variant for VHF television reception
"Rabbit ears" dipole variant for VHF television reception
Two-element turnstile antenna for reception of weather satellite data (has circular polarization) at 137 MHz
Two-element turnstile antenna for reception of weather satellite data (has circular polarization) at 137 MHz
Vertically mounted biconical (dipole) antenna
Vertically mounted biconical (dipole) antenna
DIY "butterfly" antenna for TV signals, a flattened biconical
DIY "butterfly" antenna for TV signals, a flattened biconical