Radio frequencies - Revision history

TheAnarcat at 15:57, 11 October 2010

2010-10-11T15:57:52Z

← Older revision		Revision as of 08:57, 11 October 2010
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	Radio frequencies form a fragment of the entire [[electromagnetic spectrum]]. It is generally considered that radio frequencies are found between 10 kHz and 300 GHz. 10 kHz is considered to be the lower end of the electromagnetic spectrum. Above 300 GHz infrared begins. Electromagnetic energy travels as waves that move at the speed of light (300 000km/s), normally in a straight line. [[Electromagnetic waves]] have two components, electric and magnetic. These are at right angles to each other. Unlike sound waves, electromagnetic waves do not need a medium through which to pass. Hence radio transmissions to and from deep space are possible.		Radio frequencies (RF) form a fragment of the entire [[electromagnetic spectrum]]. It is generally considered that radio frequencies are found between 10 kHz and 300 GHz. 10 kHz is considered to be the lower end of the electromagnetic spectrum. Above 300 GHz infrared begins. Electromagnetic energy travels as waves that move at the speed of light (300 000km/s), normally in a straight line. [[Electromagnetic waves]] have two components, electric and magnetic. These are at right angles to each other. Unlike sound waves, electromagnetic waves do not need a medium through which to pass. Hence radio transmissions to and from deep space are possible.

			At high power, radio waves can be dangerous and can carry a lot of energy, hence the expression "RF energy". Amateur radio operators are usually not subject to those radiations unless they are standing close to [[antenna]] equipment or have poorly installed equipment, see [[RF in the shack]].

	== See also ==		== See also ==
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	* [[Propagation]]		* [[Propagation]]
	* [[Bands]]		* [[Bands]]
			* [[Station]]
			* [[RF in the shack]]
	* [[Wikipedia:Radio wave\|Radio wave article on wikipedia]]		* [[Wikipedia:Radio wave\|Radio wave article on wikipedia]]

	{{stub}}		{{stub}}

TheAnarcat at 15:52, 11 October 2010

2010-10-11T15:52:13Z

← Older revision		Revision as of 08:52, 11 October 2010
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	A radio ~~wave~~ is a ~~special~~ [[Electromagnetic ~~wave~~]] ~~used in~~ radio ~~communications~~.		Radio frequencies form a fragment of the entire [[electromagnetic spectrum]]. It is generally considered that radio frequencies are found between 10 kHz and 300 GHz. 10 kHz is considered to be the lower end of the electromagnetic spectrum. Above 300 GHz infrared begins. Electromagnetic energy travels as waves that move at the speed of light (300 000km/s), normally in a straight line. [[Electromagnetic waves]] have two components, electric and magnetic. These are at right angles to each other. Unlike sound waves, electromagnetic waves do not need a medium through which to pass. Hence radio transmissions to and from deep space are possible.

	== See also ==		== See also ==

			* [[Propagation]]
			* [[Bands]]
	* [[Wikipedia:Radio wave\|Radio wave article on wikipedia]]		* [[Wikipedia:Radio wave\|Radio wave article on wikipedia]]

	{{stub}}		{{stub}}

TheAnarcat: Radio wave moved to Radio frequencies

2010-10-11T15:47:37Z

Radio wave moved to Radio frequencies

← Older revision	Revision as of 08:47, 11 October 2010
(No difference)

TheAnarcat: New page: A radio wave is a special Electromagnetic wave used in radio communications. == See also == * Radio wave article on wikipedia {{stub}}

2010-10-03T14:23:26Z

New page: A radio wave is a special Electromagnetic wave used in radio communications. == See also == * Radio wave article on wikipedia {{stub}}

New page

A radio wave is a special [[Electromagnetic wave]] used in radio communications.

== See also ==

* [[Wikipedia:Radio wave|Radio wave article on wikipedia]]

{{stub}}