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A quad antenna is a type of directional wire radio antenna used on the HF and VHF bands. A quad is a Yagi–Uda antenna ("Yagi") made from loop elements instead of dipoles: It consists of a driven element and one or more parasitic elements ; however in a quad, each of the loop elements may be square, round, or some other shape.
Moore was an amateur radio operator with call signs of W9LZX and HC1JB. [1] He developed and patented the cubical quad antenna, patented as US 2,537,191. [3]. Amateur Radio Club honors Clarence C. Moore as the inventor of the cubical quad antenna which is still used today by many amateur radio operators.
A full-wave two-element quad antenna used by an amateur radio station. Yagi–Uda television antenna for analog channels 2–4, 47–68 MHz.
A quad antenna is a self-resonant loop in a square shape; this one also includes a parasitic element.. Loop antennas may be in the shape of a circle, a square, or any other closed geometric shape that allows the total perimeter to be slightly more than one wavelength.
In telecommunications, a multi-band device (including (2) dual-band, (3) tri-band, (4) quad-band and (5) penta-band devices) is a communication device (especially a mobile phone) that supports multiple radio frequency bands. All devices which have more than one channel use multiple frequencies; a band however is a group of frequencies ...
William Ittner Orr (1919–2001) was an engineer, educator, communicator, and ham radio operator. [1] [2] [3] He was the American author of numerous amateur radio and radio engineering texts.