File:LNB dissassembled.JPG
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Summary
[edit]DescriptionLNB dissassembled.JPG |
Deutsch: Ein zerlegter LNB.
English: Low-noise block downconverter (LNB) from a satellite television dish, disassmbled. This is mounted at the focus of the satellite dish and converts the microwave ku band signal from the satellite to a lower intermediate frequency which is sent down the coaxial cable into the house to the set-top box at the user's TV. A feed horn collects the microwaves from the dish into a circular waveguide which passes through the hole in the circuit board. The two metal pins visible at the edge of the hole act as antennas to receive the two orthogonal circularly polarized microwave signals. On the circuit board a local oscillator creates a signal which is mixed with the microwave signal, creating the intermediate frequencies, which are output to the coaxial cable through the connectors at bottom. |
Date | |
Source | Satmap |
Author | Satmap |
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Licensing
[edit]Public domainPublic domainfalsefalse |
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I, the copyright holder of this work, release this work into the public domain. This applies worldwide. In some countries this may not be legally possible; if so: I grant anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law. |
File history
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 23:15, 5 April 2010 | 2,058 × 3,108 (1.36 MB) | Materialscientist (talk | contribs) | crop whitespace, compression (huge file) | |
16:16, 10 August 2008 | 2,297 × 3,533 (6.17 MB) | Satmap~commonswiki (talk | contribs) | {{Information |Description= |Source= |Date= |Author= |Permission= |other_versions= }} | ||
16:08, 10 August 2008 | 3,533 × 2,297 (6.08 MB) | Satmap~commonswiki (talk | contribs) | {{Information |Description= |Source= |Date= |Author= |Permission= |other_versions= }} | ||
18:56, 12 April 2007 | 3,168 × 2,376 (3.34 MB) | Satmap~commonswiki (talk | contribs) | {{Information |Description= LNB dissassembled |Source= ~~~ |Date= 21. Jan 2007 |Author= ~~~ |Permission= |other_versions= }} |
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