- S band
The S band ranges from 2 to 4
GHz, crossing the (artificial) boundary between UHF and SHF at 3.0 GHz. It is part of the microwaveband of the electromagnetic spectrum. The S band is used by weather radarand some communications satellites, especially those used by NASAto communicate with the Space Shuttleand the International Space Station. The 10-cm radarshort-band ranges roughly from 1.55 to 5.2 GHz.
In some countries, S band is used for Direct-to-Home satellite television (unlike similar services in most countries, which use Ku band). The frequency typically allocated for this service is 2.5 to 2.7 GHz (LOF 1.570 GHz).
More recently, the FCC has approved for portions of the S band between 2.0 and 2.2 GHz the creation of Mobile Satellite Services (MSS) networks in connection with Ancillary Terrestrial Components (ATC). There are presently a number of companies attempting to deploy such networks, including
ICO Satellite Managementand TerreStar.
Wireless network equipment compatible with
IEEE 802.11band 802.11gstandards use the 2.4GHz section of the S band. Also IEEE 802.16a and 802.16e standards utilize a part of the frequency range of S-Band, under WiMAXstandards most vendors are now manufacturing equipment in the range of 3.5GHz. The exact frequency range allocated for this type of use varies between countries.
Optical communications S band
"S band" is also used in
optical communicationsto refer to the wavelength range 1460 nm to 1530 nm.
* [http://www.zarya.info/Frequencies/FrequenciesSband.php S-band satellite telemetry and housekeeping frequencies]
* [http://www.tsgc.utexas.edu/archive/characterizations/pioneer10.html Pioneer 10 & 11 Abstract]
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