skippy786
Newbie  Posts: 1 Registered: 22/9/06 Status: Offline |
posted on 22/9/06 at 13:18
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Anyone know of a router that can get decent signal through walls?
I'm going to be setting up a network with the computer only about 30 feet
from the router, but with 2-3 nice big plaster walls in the way. Do I have
a chance?
Thanks.
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titillation
Newbie Posts: 7 Registered: 29/9/06 Status: Offline |
posted on 29/9/06 at 07:07 |
quote:
Anyone know of a router
that can get decent signal through walls?
I'm going to be setting up a network with the computer only about 30 feet
from the router, but with 2-3 nice big plaster walls in the way. Do I have
a chance?
Thanks.
There are powerline adaptors that can create a LAN using your electricity
mains in the house. That might be an option for you - but they do not
always work between all connections. (Much like your regular babyphone:
might work down the street, but not in the next room - only I think these
are build to absolutely not work in the down the street scenarios) |
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Geocoorna
Junior Member  Posts: 16 Registered: 15/2/07 Status: Offline |
posted on 20/2/07 at 15:20 |
I have a $49 Linksys router in a corner room of the house, and there are
about 40 feet and six plaster walls between it and the bedroom.
Out-of-the-box there was no way the signal could reach.
I replaced one antenna with a 7dBm omni-directional from D-Link, and made
parabolic reflectors for it and the remaining original antenna. Now the
whole house gets good to excellent service -- even the upstairs!
An antenna solution is better than a stronger wireless router, because a
better antenna can both send stronger and pick up the weak signal from the
other side of the bridge. __________________________________
(((((zap))))) |
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rfengr
Junior Member Posts: 13 Registered: 8/11/07 Status: Offline |
posted on 8/11/07 at 17:23 |
Getting through plaster walls are a matter of having enough RF power. A
drywall takes about 6dB to 10dB to penetrate. If your router is
transmitting perpendicular to the wall it takes about 6dB. If the
transmission is skewed, it'll take about 10dB.
The FSL (Free Space Loss) for 40 ft is about -85dB. Let's assume that the
transmit power of your router is 50mW (+17dBm) and the antenna is 2.2dBi
and the 1Mbps receive sensitivity is about 90dB. You have a link budget of
about 24.2dB to make the link, if there were no walls. The walls will
require an additional 36dB to 60 dB to penetrate. Your net link margin is
-11.8dB best case to -35.8dB on the worst case.
From an RF perspective, I don't think adding a higher gain antenna is going
to work. You're going to need a bi-directional RF power amplifier. The amps
are more costly than the Linksys router. You might want to look at cabling
if you don't want to spend the money on the amp.
Good luck........RFengr |
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Tapaz
Newbie Posts: 4 Registered: 25/9/08 Status: Offline |
posted on 25/9/08 at 05:15 |
| My D-link DIR300 can get through 2 wals and still get a decent signal about
20 meters away. |
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