- Band (radio)
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 purpose. Examples include:*AM broadcast band (530–1610
kHz or to 1710kHz on the extended AM band in theAmericas )
*VariousShortwave bands (5.9–26.1 MHz)
*Citizens' band (26.965–27.405 MHz)
*Television station s 2–6 (54–88 MHz in the Americas)
*FM broadcast band (88–108 MHz, except 76–90 MHz inJapan )
*Airband (108–137 MHz) forair traffic control
*Television stations 7–13 (174–216 MHz in the Americas)
*L band (1,452–1,492 MHz) fordigital radio (DAB) outside theUnited States
*Amateur radio bands among several different frequencies
*Military bands:
**FM band (35-87.9 MHz)
**X band (8–10 GHz)
**S band (1750–2400 MHz)
*K band (20–40 GHz), which is further subdivided:
**Ka band: K-above band, 27–40 GHz, mainly used forradar and general communications
**Ku band: K-under band, 12–18 GHz, mainly used for satellite communications
*Radionavigation beacon s, such asLORAN andGPS
*V band (50–75 GHz)
* Variousamateur radio bands Each of these bands has a basic
bandplan which dictates how it is to be used and shared, to avoidinterference and to set protocol for thecompatibility oftransmitter s and receivers.Note that as a matter of
physics , bands are divided atwavelength s of 10nmetre s, or frequencies of 3×10nhertz . For example, 30 MHz or 10 m divides shortwave (lower and longer) from VHF (shorter and higher). These are the parts of theradio spectrum , and not itsfrequency allocation .
Wikimedia Foundation. 2010.