ᐅ Multiswitch for Satellite TV: Install in the Attic or Basement?

Created on: 31 May 2016 19:34
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world-e
Hello everyone,

What are your thoughts on the best location for installing the satellite multiswitch? Does it make more sense to place it in the unheated attic space or in the technical room in the basement?
The house will have two full floors with a shallow pitched roof (unheated attic) and a basement.

Advantages of the attic:
- Less signal loss, since the multiswitch is close to the satellite dish
- Less cabling effort, as most connections are on the upper floor (3x twin outlets). This allows the rooms to be connected directly. Ground floor (2x twin), basement (1x twin)
- Satellite cables between the multiswitch and the satellite dish are easier to replace if they fail after several years

Advantages of the basement:
- Fewer penetrations through the vapor barrier in the top floor ceiling
- All technical equipment is located in the basement technical room

Thank you for your opinions and suggestions.
Mycraft1 Jun 2016 10:04
I see no advantages to installation in the basement.
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world-e
1 Jun 2016 10:11
Thank you for the feedback. When installing in the attic, it is worth considering whether to run the cables directly to the rooms or through the installation shaft.
Jochen1041 Jun 2016 10:20
Ours run inside conduit pipes directly from the multiswitch to each room.
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SirSydom
1 Jun 2016 17:15
Mycraft schrieb:
I see no advantage to installation in the basement.

I do! Guys, do you know how hot it can get in a “cold” attic during summer? It easily reaches 60-70°C (140-158°F), candles even melt up there!

Excerpt from the datasheet of my multiswitch:

Ensure sufficient air circulation around the devices. The allowable ambient temperature range is -20°C to +50°C (–4°F to 122°F)

Whether I run 4 cables from the LNB to the multiswitch in the utility room, or 4 cables from the multiswitch in the attic to the rooms, makes no difference regarding airtightness.
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world-e
1 Jun 2016 20:12
If the multiswitch is installed in the basement, the individual rooms would not be connected via the attic, so the entire system would remain within the airtight building envelope. This way, the vapor barrier would only need to be penetrated by the four cables.
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SirSydom
1 Jun 2016 20:16
5, not 4. Do not forget the equipotential bonding!