Re: Best setup for penetrating walls?

klimclik <klimclik.2xxqsn@xxxxxxxxxxxxxxxxxxxxxxxx> hath wroth:


I'll soon be getting satellite internet and need to connect three
desktop computers to the modem.

C1 and C2 are in two rooms in a steel-sided building. They can be
connected to the modem via c6 cable so they are really no problem.

However, the third desktop, C3, is in a wood sided building 350' away
from the steel building. The signal would need to go through one
interior wall and the steel siding of Building 1 and through the
exterior and one interior wall of Building 2 to reach C3.

There is a direct line of sight from the roof of building 1 to building
2, and I've thought of mounting an antenna or AP there.

I have posted a schematic of the layout here: 'WiFi setup'
(http://www.horsekeeping.com/Rpersonal/WiFi/wifisetup.htm)

I don't understand the drawing. Can you label what cables and what
signals are going from various points?

Questions:

1. Is there a router that could send a usable signal 350' and through 4
walls, one of them 16 gauge steel?

No. Anything denser than chicken wire will not pass any RF. Most of
it will be reflected. However, if you have a window available, you
can put the antenna in the window and it might work.

2. If the router can't penetrate the obstacles, what would I need to
get decent wireless signal from the router in Building 1 to C3 in
Building 2?

In order of preference:
- Antennas outside BOTH buildings.
- CAT5 or fiber optic cable buried in the ground.
- If you have a common AC power line, power line networking will work.
- Data over RG-6/u coax cable (various methods).
- If you have phone wiring, HomePNA phone line networking.
- FSO (free space optical). Kinda expensive and requires a window.

4. What type of adapter would be best for C3?

Dunno. If you can manage an outside antenna on the steel building,
just about any wi-fi device with an external antenna connector will
work. I kinda like Buffalo WLI-TX4-G54HP even if they did just cheat
me out of a $10 rebate.

The antennas will probably be big and ugly at 350ft plus needing to
penetrate an additional wall. The calcs are at:
<http://wireless.wikia.com/wiki/Wi-Fi#Link_Calculations>
Same problem at building c2. Unless your c2 wall is made of paper,
there's going to be some loss. Find a window on c2.



--
Jeff Liebermann jeffl@xxxxxxxxxx
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558
.

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