Europe
In Europe the frequencies used by DBS services are 10.7–12.75 GHz on two polarisations H (Horizontal) and V (Vertical). This range is divided into a "low band" with 10.7–11.7 GHz, and a "high band" with 11.7–12.75 GHz. This results in two frequency bands, each with a bandwidth of about 1 GHz, each with two possible polarizations. In the LNB they become down converted to 950–2150 MHz, which is the frequency range allocated for the satellite service on the coaxial cable between LNBF and receiver. Lower frequencies are allocated to cable and terrestrial TV, FM radio, etc. Only one of these frequency bands fits on the coaxial cable, so each of these bands needs a separate cable from the LNBF to a switching matrix or the receiver needs to select one of the 4 possibilities at a time.
Read more about this topic: Satellite Dish
Famous quotes containing the word europe:
“What helps it now, that Byron bore,
With haughty scorn which mock’d the smart,
Through Europe to the Aetolian shore
The pageant of his bleeding heart?
That thousands counted every groan,
And Europe made his woe her own?”
—Matthew Arnold (1822–1888)
“New York has her wilderness within her own borders; and though the sailors of Europe are familiar with the soundings of her Hudson, and Fulton long since invented the steamboat on its waters, an Indian is still necessary to guide her scientific men to its headwaters in the Adirondack country.”
—Henry David Thoreau (1817–1862)
“In Europe art has to a large degree taken the place of religion. In America it seems rather to be science.”
—Johan Huizinga (1872–1945)