A bandplan or band plan is a plan for utilizing a particular band of radio frequencies, that are a portion of the electromagnetic spectrum . For other uses and for specific types of plans see Plan (disambiguation. A band is a small section of the spectrum of Radio communication frequencies, in which channels are usually used or set aside for the same Radio frequency ( RF) is a Frequency or rate of Oscillation within the range of about 3 Hz to 300 GHz The electromagnetic (EM spectrum is the range of all possible Electromagnetic radiation frequencies Each bandplan defines the frequency range to be included, how channels are to be defined, and what will be carried on those channels. Channel, in communications (sometimes called communications channel) refers to the medium used to convey Information from a Typical definitions set forth in a bandplan are:

• numbering scheme - which channel numbers or letters (if any) will be assigned
• center frequencies - how far apart the carrier wave for each channel will be
• bandwidths and/or deviation - how wide each channel will be
• spectral mask - how extraneous signals will be attenuated by frequency
• modulation - what type will be used or are permissible
• content - what types of information are allowed, such as audio or video, analog or digital
• licensing - what the procedure will be to obtain a license

See also

• Frequency allocation
• Cellular frequencies
• Amateur radio frequency allocations

There are many different numbering schemes for assigning Nominal numbers to entities In Electrical engineering and Telecommunications, the center frequency of a filter or channel is a measure of a central frequency between the upper and lower In Telecommunications, a carrier wave, or carrier is a Waveform (usually Sinusoidal) that is modulated (modified with an input signal In Telecommunications, a spectral mask, also known as a transmission mask is a Mathematically defined set of lines applied to the levels of Radio In Telecommunication, signalling (UK spelling or signaling (US spelling has the following meanings The use of signals for controlling communications In Physics, attenuation (in some context also called extinction) is the gradual loss in intensity of any kind of Flux through a medium In Telecommunications, modulation is the process of varying a periodic Waveform, i Sound' is Vibration transmitted through a Solid, Liquid, or Gas; particularly sound means those vibrations composed of Frequencies Video is the technology of electronically capturing, Recording, processing storing transmitting and reconstructing a sequence of Still images An analog or analogue signal is any continuous signal for which the time varying feature (variable of the signal is a representation of some other A digital system uses discrete (discontinuous values usually but not always Symbolized Numerically (hence called "digital" to represent information for The verb license or grant license means to give permission The noun license is the document demonstrating that permission The Electromagnetic spectrum is an aspect of the physical world which like land water and air is subject to usage limitations All cellular phone networks worldwide utilize a portion of the radio frequency spectrum designated as Ultra High Frequency, or "UHF" for the transmission Amateur radio Frequency allocation is done by national telecommunications authorities

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