Antenna technology - who is knowledgeable and can advise me?

  • Erstellt am 2018-09-16 21:04:48

Leo

2018-09-18 12:17:32
  • #1
I don't find LWL uninteresting either, but I think there are still too few providers on the market and mature products at the moment. Or is this misleading?
 

Tom1607

2018-09-18 19:33:38
  • #2
hi that is misleading. there are a lot of providers. I am currently installing a 7-family house where I have an [lwl LNB] on the roof, a 7-way [lwl distribution] in the attic, and a 7-way [lwl to coax converter] in each apartment. this way I effectively have 49 lines which is pretty practical. for a single-family house this is certainly oversized but the costs are manageable. and you only need to lay one cable. besides, this way I don't loop any voltages from the roof into the house; if lightning strikes, it only kills the system in the attic, the distributions in the house remain unaffected because [lwl] is the perfect galvanic isolation. that’s why I did it this way in my own house too.
 

Fuchur

2018-09-18 21:40:35
  • #3
I find the approach quite interesting. Regarding lightning protection: Is it really present if the LNB requires a power supply?

I ask as someone who lost a router a few weeks ago due to overvoltage on the DSL line.
 

world-e

2018-09-19 08:37:08
  • #4
The power supply must also be connected to the equipotential bonding. Some optical fibers are apparently also steel-armored, which makes it difficult or impossible to integrate them into the equipotential bonding.
 

Leo

2018-09-19 13:21:25
  • #5

Can you list the installed components?
How is the power supply on the roof galvanically separated from the rest?
 

Tom1607

2018-09-21 17:16:00
  • #6
: The power supply for the LNB goes through the general electricity meter. Each apartment has its own meter, and in each apartment there is a surge protector installed at the entrance to the distribution box. The fiber optic cables have no metal reinforcement, so nothing can pass through the cable. The installed system is an Invacom, but you can also use Triax. There is not much difference. There is also a surge protector installed before the meters.
 

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