Changes

C-Band Satellite Information

1,621 bytes added, 00:08, 7 May 2008
The following lines were added (+) and removed (-):
C band is in the microwave range of frequencies ranging from 4 to 8 GHz.  A typical C-band satellite uses 3.7–4.2 GHz for downlink, and 5.925–6.425 Ghz for uplink. C band is often used for Television receive-only, or TVRO.&nbsp;<big>'''NOTE''': As of Aug 1, 2007, most channels will have moved to [[Motorola 4DTV Satellite Technology|4DTV and a 4DTV receiver]] is required to receive them except for these four channels that are still available on analog c-band after Aug 1: CNN/Headline News, TBS, TNT and The Weather Channel.</big>* See: [[Motorola 4DTV Satellite Technology]]* Showtime on G5-24 leaves analog March 31st 2008One popular place to go for subscription to C-Band television programming is [http://www.bigdish.com/BigDish Online] C-Band Satellite TV Programming. For owners of a Big Dish, there are programming providers that offer al la carte and packaged channels for both analog C-band and C-band digital, known as [[Motorola 4DTV Satellite Technology|4DTV]].List of C-Band Programming Providers:See the <big>[[DirecTV_and_Dish_Net_Alternatives_for_Satellite_Television_Service#Big Dish Programming Providers|Big Dish Programming Providers section]]</big> on the DirecTV and Dish Net Alternatives for Satellite Television section of this [[WiKi]] for more details. :* [http://www.bigdish.com/ Bigdish] ''(located in Winter Springs Florida)''Fox News left C band analog in November of 2007.  WGN on G5-13 has left analog.  HBO West left G5-8 in December of 2007.  Cinemax East, Cartoon Network, Comedy Central, Spike, Nick, and E! and a few others have all also left C band analog.Fox News is available digitally on G3-581 for paid subscribers of certain packages.== Smallest Possible C-Band Dish ==== C Band Equipment ==Depending on the satellite footprint, the power of the satellite, and your location you can go as low as 5ft for receiving a signal from a few select satellites. The 8ft dish is very common for C-Band reception. One problem with having a small dish for C-Band reception is that of adjacent satellite interference. The minimum size to work with the 2 degree satellite spacing we have now is about 8 1/2 ft.As mentioned in our [[Television Satellite Dish Reference]] page, you should consider buying used equipment. Due to the popularity of digital satellite systems, people are selling or sometimes giving away their old C band equipment. Two excellent, used receiver brands to look for are General Instrument, Drake, and Uniden. Avoid systems made prior to around 1992, off brand equipment, and broken systems. Popular brands will usually mean that a large stockpile of repair parts are available. Offset dishes are typically more efficient than prime focus primarily because with a prime focus dish the struts that hold the feedhorn assembly block some of the signal.  An offset dish will pick up less thermal earth noise lowering the noise floor level.  You can get away with a smaller dish if it is an offset dish.Make sure the receiver is capable of receiving C band and Ku band.  You should be able to get around 1000 channels if you have a receiver capable of both, and most receivers are.8.5 ft is about the smallest size for proper C-band reception in most of parts of North America. An 8.5 ft reflector should eliminate adjacent satellite interference issues.  10 ft was the standard back in the 80's when satellite transmission power was, on average, less.An Example Receiver: [[Image:ExampleCbandSatRec01.jpg]] Here is a General Instrument C and Ku band receiver. The General Instrument "Innovation" 450i. This unit includes "Videopal" which is a system for ordering subscription programming.  This is considered a fairly modern C and Ku band analog satellite receiver. == C Band Equipment ==== Smallest Possible C-Band Dish ==As mentioned in our [[Television Satellite Dish Reference]] page, you should consider buying used equipment. Due to the popularity of digital satellite systems, people are selling or sometimes giving away their old C band equipment. Two excellent, used receiver brands to look for are General Instrument, Drake, and Uniden. Avoid systems made prior to around 1992, off brand equipment, and broken systems. Popular brands will usually mean that a large stockpile of repair parts are available.   The [[Television Satellite Dish Reference]] shows examples (pictures) of some C-band dishes, as well as smaller Ku band dishes.   Make sure the receiver is capable of receiving C band and Ku band.  You should be able to get around 1000 channels if you have a receiver capable of both, and most receivers are.Depending on the satellite footprint, the power of the satellite, and your location you can go as low as 5ft for receiving a signal from a few select satellites.  The 8ft dish is very common for C-Band reception.  One problem with having a small dish for C-Band reception is that of adjacent satellite interference. The minimum size to work with the 2 degree satellite spacing we have now is about 8 1/2 ft. Offset dishes are typically more efficient than prime focus primarily because with a prime focus dish the struts that hold the feedhorn assembly block some of the signal.  An offset dish will pick up less thermal earth noise lowering the noise floor level.  You can get away with a smaller dish if it is an offset dish. 8.5 ft is about the smallest size for proper C-band reception in most of parts of North America. An 8.5 ft reflector should eliminate adjacent satellite interference issues.  10 ft was the standard back in the 80's when satellite transmission power was, on average, less.
Bureaucrat, administrator
16,192
edits