5.3 LNBs
>You may choose quattro, dual output or twin LNBs, but not universal twin types.
>Use only
>The LNBs receive their mains power supply via the basic unit GigaSwitch 11/20G. Please note the maximum power supply as per the technical specifications.
5.4 Cables
>We recommend that you use
>We recommend CoaxSat 2150 cable for your connections leading to the LNBs. If the circumstances within the house/building permit, this type of cable should also be used for the connections to the individual participants.
>For systems distributing to more than 40 participants we recommend the use of multi- media cable for the main line connections (1 x
>Cables must be insulated as follows:
Damping (dB/x/metre) of suitable cable types
Type |
| CoaxSat 2150 |
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| Mini Coax |
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| Multimedia 4 u. 5 | ||||
At MHz | 40 | 300 | 860 2150 | 40 | 300 | 860 | 2150 | 40 | 300 | 860 | 2150 | |
10m | 0.3 | 1 | 1.8 | 3 | 0.5 | 1.5 | 2.5 | 4.2 | 0.7 | 1.7 | 3 | 4.9 |
20m | 0.6 | 2 | 3.6 | 6 | 1 | 3 | 5 | 8.4 | 1.4 | 3.4 | 5 | 8.4 |
30m | 0.9 | 3 | 5.4 | 9 | 1.5 | 4.5 | 7.4 | 12.6 | 2.1 | 5.1 | 9 | 14.7 |
40m | 1.2 | 4 | 7.2 | 12 | 2 | 6 | 10 | 16.8 |
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50m | 1.5 | 5 | 9 | 15 | 2.5 | 7.5 | 12.5 | 21 |
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60m | 1.8 | 6 | 10.8 | 18 |
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70m | 2.1 | 7 | 12.6 | 21 |
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5.5 Selecting the antenna connectors
The individual participants are connected by means of antenna connectors, e.g. types SV 500, SVT 500. This allows terrestrial programmes to be received without any need to change the connectors. At the same time, this type of connector also protects the receiver from faults occurring outside the bandwidth.
Output levels of a SV 500 antenna connector:
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| Damping of connector |
| Level (dBµV) |
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| (dB) | minimal | recommended | maximal |
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| 47 | 58 | 79 |
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| UKW | 2 | 50 | 63 | 70 |
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| VHF | 5 | 55 | 63 | 70 |
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| UHF | 4 | 55 | 63 | 70 |
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6
