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The Radio Amateur Antenna Handbook. Radio Amateur Callbook. ISBN 978-0-8230-8706-8. Orr, William I. (1993). Vertical Antennas. Watson-Guptill Publications, Incorporated. ISBN 978-0-8230-8710-5. Orr, William I. (1996). The W6SAI HF Antenna Handbook. CQ Communications, Incorporated. ISBN 978-0-943016-15-3. Orr, William I. Radio Handbook (23 ed ...
A two-element quad antenna used by an amateur radio station A 4-element amateur radio quad antenna. The two men working on it show the scale. The wire loops are almost invisible, suspended on the ends of the crossed supports. A quad antenna is a type of directional wire radio antenna used on the HF and VHF bands.
Amateur radio, also known as ham radio, is the use of the radio frequency spectrum for purposes of non-commercial exchange of messages, wireless experimentation, self-training, private recreation, radiosport, contesting, and emergency communications. [1]
Created Date: 8/30/2012 4:52:52 PM
Moxon antenna for the 2-meter band. The Moxon antenna or Moxon rectangle is a simple and mechanically rugged two-element parasitic array, single-frequency antenna. [1] It takes its name from the amateur radio operator and antenna handbook author Les Moxon [2] (call sign G6XN). [1]
In transmission, a radio transmitter supplies an electric current to the antenna's terminals, and the antenna radiates the energy from the current as electromagnetic waves (radio waves). In reception , an antenna intercepts some of the power of a radio wave in order to produce an electric current at its terminals, that is applied to a receiver ...
Often random wire antennas are also (inaccurately) referred to as long-wire antennas.There is no accepted minimum size, but actual long-wire antennas must be greater than at least a quarter-wavelength ( 1 / 4 λ) or perhaps greater than a half ( 1 / 2 λ) at the frequency the long wire antenna is used for, and even a half-wave may only be considered "long-ish" rather than "truly ...
An amateur radio station incorporating two HF transceivers. A typical Yagi antenna used by a Canadian radio amateur for long distance communication Boeing 707 used a HF antenna mounted on top of the tail fin [7] The main uses of the high frequency spectrum are: Military and governmental communication systems; Aviation air-to-ground communications
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