Monoblock LNB
Encyclopedia
A Monoblock LNB is a type of Low-noise block converter
used in communications satellite
reception. This dual LNB is the simplest solution to achieve multifeed reception for two satellites.
This design consists of two independent LNBs in a single case. The two 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 degree or 6 degree 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
or Astra 19.2°E
/Astra 23.5°E
, for example).
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° east and Astra 23.5° east 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.
Low-noise block converter
A low-noise block downconverter is the receiving device of a parabolic satellite dish antenna of the type commonly used for satellite TV reception...
used in communications satellite
Communications satellite
A communications satellite is an artificial satellite stationed in space for the purpose of telecommunications...
reception. This dual LNB is the simplest solution to achieve multifeed reception for two satellites.
This design consists of two independent LNBs in a single case. The two LNBs can be automatically addressed with any DiSEqC
DiSEqC
DiSEqC , pronounced "Die-Sec", is a special communication protocol for use between a satellite receiver and a device such as a multi-dish switch or a small dish antenna rotor...
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 degree or 6 degree spacing. In Europe
Europe
Europe is, by convention, one of the world's seven continents. Comprising the westernmost peninsula of Eurasia, Europe is generally 'divided' from Asia to its east by the watershed divides of the Ural and Caucasus Mountains, the Ural River, the Caspian and Black Seas, and the waterways connecting...
, for example, there are monoblock single, twin and quad LNBs for the Ku band
Ku band
The Kμ band is a portion of the electromagnetic spectrum in the microwave range of frequencies. This symbol refers to —in other words, the band directly below the K-band...
, which have a pre-defined spacing of 6 degrees (for Astra 19.2°E
Astra 19.2°E
Astra 19.2°E is the name for the group of communications satellites co-located at the 19.2°East orbital position in the Clarke Belt that are owned and operated by SES Astra, a subsidiary of SES based in Betzdorf, Luxembourg....
/Hot Bird
Hot Bird
Hot Bird is the name of a popular family of satellites operated by Eutelsat, located at 13°E over the Equator and with a transmitting footprint over Europe, North Africa and the Middle East....
or Astra 19.2°E
Astra 19.2°E
Astra 19.2°E is the name for the group of communications satellites co-located at the 19.2°East orbital position in the Clarke Belt that are owned and operated by SES Astra, a subsidiary of SES based in Betzdorf, Luxembourg....
/Astra 23.5°E
Astra 23.5°E
Astra 23.5°E is the name for the group of communications satellites co-located at the 23.5° east position in the Clarke Belt owned and operated by SES Astra, a subsidiary of SES based in Betzdorf, Luxembourg...
, for example).
In March 2007, a new type of monoblock, called the Duo LNB
Duo LNB
A Duo LNB is a double low noise block-downconverter developed by SES Astra for the simultaneous reception of satellite television signals from both the Astra 23.5°E and Astra 19.2°E satellite positions....
was introduced by CanalDigitaal in the Netherlands
Netherlands
The Netherlands is a constituent country of the Kingdom of the Netherlands, located mainly in North-West Europe and with several islands in the Caribbean. Mainland Netherlands borders the North Sea to the north and west, Belgium to the south, and Germany to the east, and shares maritime borders...
for the simultaneous reception of Astra 19.2° east and Astra 23.5° east 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.