“Minidish”的意思、由来-开放百科全书

词条

Minidish

释义

References

The Minidish is the tradename used for the small-sized satellite dish used by Freesat and Sky. The term has entered the vocabulary in the UK and Ireland as a generic term for a satellite dish, particularly small ones.{{Citation needed|date=July 2011}}

The Minidish is an oval, mesh satellite dish capable of reflecting signals broadcast in the upper X band and {{Ku band}}. Two sizes exist:

"Zone 1" dishes are issued in southern England and were 43 cm vertically prior to 2009; newer mark 4 dishes are approximately 50 cm
"Zone 2" dishes are issued in elsewhere (Wales, Northern Ireland, Republic of Ireland, Scotland and northern England), which are 57 cm vertically.

The Minidish uses a non-standard connector for the LNB, consisting of a peg about {{convert|4|cm|in|abbr=on}} in width and {{convert|7.5|mm|in|abbr=on}} in height prior to the mark 4 dishes introduced in 2009, as opposed to the 40 mm collar.{{Clarify|to what does the 40mm collar refer; other, "standard", dishes, post mark 4 dishes, or both?|date=July 2011}} This enforces the use of Sky-approved equipment, but also ensures that a suitable LNB is used. Due to the shape of the dish, an LNB with an oval feedhorn is required to get full signal.^[1]

References

1. ^http://www.satcure.co.uk/tech/lnb.htm#SX1019

3 : Satellite television|Radio electronics|Sky (company)

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