| 词条 | Monoblock LNB |
| 释义 |
A monoblock (or monobloc) LNB is a type of low-noise block downconverter used in communications satellite reception, this dual LNB is the simplest solution to achieve multifeed reception for two, three or four satellites. This design consists of two, three or four independent LNBs in a single case. The two, three or four LNBs can be automatically addressed with any DiSEqC 1.0 or higher receiver. In some cases, they can also be addressed with ToneBurst/MiniDiSEqC. However, they are only available for satellites with a fixed 3 degree, 4.3° or 6° spacing. In Europe, for example, there are monoblock single, twin and quad LNBs for the Ku band, which have a pre-defined spacing of 6 degrees (for Astra 19.2°E/Hot Bird 13°E). In March 2007, a new type of monoblock, called the Duo LNB was introduced by CanalDigitaal in the Netherlands for the simultaneous reception of Astra 19.2°E/Astra 23.5°E with a spacing of just 4.3 degrees. Unlike most other monoblocks, the Duo LNB was intended for use with 60 cm dishes (most monoblocks require a larger, 80 cm or 1 m dish). The Duo LNB is available in twin and quad versions. See also
1 : Telecommunications equipment |
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