AM Radio Band

The Amplitude Modulated (AM) radio carrier frequencies are in the frequency range 535-1605 kHz. The frequencies 30-535 kHz are used for maritime communication and navigation and for aircraft navigation. Carrier frequencies of 540 to 1600 kHz are assigned at 10 kHz intervals.

Frequencies: 500-1500 kHz
Wavelengths: 600 - 200 m
Quantum energies: 2 - 6 x 10^-9 eV

Electromagnetic spectrumAM and FM frequenciesRadio frequency bands
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Short Wave

The frequencies from the top end of the AM band to the bottom of the VHF television band are generally called the "short wave" range, a historical term. The range from 1605 kHz to 54 MHz has multiple communication uses.
1,605 kHz - 30 MHz Amateur radio, government radio, international shortwave broadcast, fixed and mobile communications.
30-50 MHz Government and non-government, fixed and mobile. Includes police, fire, forestry, highway, and railroad services.
50-54 MHz Amateur
Frequencies: 1.605 - 54 MHz
Wavelengths: 187 - 5.55 m
Quantum energies: .66 x 10^-8 - .22 x 10^-6 eV

Electromagnetic spectrum

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TV and FM Radio Band

The carrier frequencies for VHF television Channels 2-4 cover the frequency range 54 to 72 MHz. There is a band from 72-76 MHz which is reserved for government and non-government services, including a standard aeronautical beacon at 75 MHz. VHF TV channels 5 and 6 are between 76 and 88 MHz. The FM radio band is from 88 to 108 MHz between VHF television Channels 6 and 7.Above the FM is a range 108-122 MHz for aeronautical navigation including localizers, radio ranging and airport control. From 122 to 174 MHz is another general service band for both government and non-government signals. It includes fixed and mobile units and amateur broadcast. Channels 7 through 13 span the frequency range 174-216 MHz. 216-470 MHz includes a number of fixed and mobile communication modes, including some aeronautical navigation and citizens radio. 470-890 MHz includes UHF television channels 14 to 83. Frequencies 890-3000 MHz include a variety of aeronautical and amateur uses, studio-transmitter relays, etc. There are radar bands 1,300-1,600 MHz.

The FM stations are assigned center frequencies at 200 kHz separation starting at 88.1 MHz, for a maximum of 100 stations. These FM stations have a 75 kHz maximum deviation from the center frequency, which leaves 25 kHz upper and lower "gaurd bands" to minimize interaction with the adjacent frequency band. Television channels have 5 MHz separation.

Frequencies: 54-1600 MHz
Wavelengths: 5.55 m - 0.187 m
Quantum energies: 0.22 x 10^-6 - 0.66 x 10^-5 eV

L-Band for Satellite Communication

The range 390-1550 MHz in the ultrahigh radio frequency range is designated as the L-Band and is used for a variety of satellite communication purposes.
For example, the Global Positioning System uses two carrier frequencies in this band for broadcasting navigation data.
Electromagnetic spectrumAM and FM frequenciesRadio frequency bands
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Microwaves, Radar

While there are some radar bands from 1,300 to 1,600 MHz, most microwave applications fall in the range 3,000 to 30,000 MHz (3-30 GHz). Current microwave ovens operate at a nominal frequency of 2450 MHz, a band assigned by the FCC. There are also some amateur and radio navigation uses of the 3-30 GHz range. In interactions with matter, microwave radiation primarily acts to set produce molecular rotation and torsion, which manifests itself by heat.

For microwave ovens and some radar applications, the microwaves are produced by magnetrons.

Frequencies: 1.6-30 GHz
Wavelengths: 187 - 10 mm
Quantum energies: 0.66 x 10^-5 - 0.12 x 10^-3 eV

Electromagnetic spectrum

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Millimeter Waves, Telemetry

The range 30-300 GHz is used for a variety of experimental, government and amateur purposes in communication.
Frequencies: 30-300 GHz
Wavelengths: 10 - 1 mm
Quantum energies: 0.12 x 10^-3 - 0.12 x 10^-2 eV

Electromagnetic spectrum

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