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What wavelengths are used for radio frequency?

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In round figures 1 Km (AM broadcast radio) to 0.1 mm (microwave).
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How do you find frequency using wavelength?

  Wavelength lambda and frequency f are connected by the speed c of the medium.   c can be air = 343 m/s at 20 degrees celsius or water at 0 dgrees = 1450 m/s.   c c

What is the wavelength and frequency for radio waves?

The wavelength is greater than 300E6/300E9 = 1 mm and the frequency is less than about 300 Gigacycles.
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What type of frequency and wavelength does radio waves have?

One convenient working definition of 'radio' is: Electromagnetic radiation with frequency up to 300 GHz / wavelength down to 1 millimeter. 'Radio' is our name for the lowest