How long is 1 radio wave?

Answer 1

Waves longer than 1mm are considered to be in the radio spectrum, submarine communications use waves kilometers long. Some radio waves are too long to be used in communications today. There are some very good answers regarding radio and TV communication in Related Answers right here on WikiAnswers.

Answer 2

AM radio waves (550 to 1700 KHz) have a wavelength of about 545 meters down to about 175 meters.
FM radio waves (87.5 to 108 MHz) are shorter, around 3.4 to 2.7 meters.
Shortwave radio waves (1.8 to 30 MHz) are intermediate, from about 550 down to 10 meters.
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The length of a radio wave depends on the wave's frequency and the speed of electromagnetic radiation in the medium it is traveling through. (Radio waves and light waves are the names given to two different kinds of electromagnetic radiation.)

wavelength = speed/frequency

The speed at which these waves travel through space is a physical constant having an exact value of 299,792,458 meters per second. For rough calculations that speed is approximated as 300,000 kilometres per second or 186,000 miles per second.

A typical radio wave used for mobile phones in the US and some other countries has a frequency of 1900 megahertz (MHz) which is the same as 1,900,000,000 cycles per second. Using the above formula, such a radio wave must therefore have a length of:
300,000,000 meters / 1,900,000,000 = 0.1578947 meters, which is approximately 6.2 inches.

Answer 3

The wavelength of a radio wave depends on its frequency. Each different frequency has

a different wavelength.

We use radio communication over the range of frequencies of, let's say, 60 KHz to 200 GHz.

At 60 KHz, the wavelength is 5,000 meters (3.1 miles).

At 200 GHz, the wavelength is 1.5 millimeters (0.06 inch).

Every wavelength in between those is presently used for radio communication.

Answer 4

The frequency divided into "C" the speed of light in meters. 100mhz in the FM band has a wave length of 3 meters. Divide 300,000,000 meters per second "C" by 100,000,000 cycles per second (10mhz). Now you can do it.

Answer 5

We generate and detect radio frequencies for purposes of communication in the range

of roughly 30 KHz to 300 GHz, corresponding to a range of wavelengths of 10,000 meters

to 1 millimeter.

Answer 6

That depends on its frequency.

For radio communication, that's some number between roughly 100,000 and 100,000,000,000.

Once you know the frequency of the wave you're interested in, divide 300,000,000 by the frequency.

The result is the length of each wave, in meters.

Answer 7

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Answer 8

radio waves have frequencies from 300 GHz to as low as 3 KHz and corresponding wave lengths from 1mm to 100km

Answer 9

The average amplitude over one cycle ... 360 degrees of phase ... is zero.