| Radio |
A frequency that is higher than the audio frequencies but below the infrared frequencies, usually above 20 KHz. |
| Receiver |
Satellite receiver, part of reception equipment used to tune into a single channel broadcast from a satellite. |
| Redundancy |
Compression is based on the principle that all TV pictures contain redundant information and therefore the quantity of data in a digitised signal can be reduced. Redundancy may be: "spatial" - the correlation between adjacent picture elements within the TV frame is used to reduce the data (intraframe compression); "temporal" - only the differences between adjacent frames are processed and encoded (interframe compression); or "statistical" - regularly repeated and therefore predictable information is not transmitted. |
| Return |
The transmission path issued from the end user and reaching the service provider. |
| Reach |
The "Reach" of a satellite system is the number of Households who are receiving at least one channel of that satellite system. |
