Re: 2.4Ghz ampliier increase signal strength?
- From: Jeff Liebermann <jeffl@xxxxxxxxxxxxxxxxxxxxxx>
- Date: Sat, 31 Dec 2005 07:34:10 GMT
On 30 Dec 2005 11:33:06 -0800, "Zycor" <harooga29@xxxxxxxxx> wrote:
>I'm a wireless novice, and I'd like to increase my 802.11 wireless
>signal strength and range. In particular, I want greater strength
>through walls.
How many walls? What type of walls? If it's drywall or wood, you
have a chance. If it's concrete, steel, aluminium, or foil backed
insulation, forget it.
>I understand that antennas focus signals, not
>strengthen them.
Correct. Antennas do not generate any RF. The merely redirect it.
>I see a lot of 2.4Ghz signal amplifiers for sale.
Many are totally illegal. Look for the FCC type certification (if in
the USA).
>If
>I purchase one of these and hook it up to my antenna will this increase
>range and strength? Or do I mis understand the technology?
Have you looked at the prices for these amplifiers? Even the cheapest
is $100 plus.
Antennas improve the signal strengh in both directions. Amplifiers
only boost the signal in one direction. In the reverse direction,
you're limited by the transmit power of the non-amplified device. This
lack of symmetry results in the range being limited by the weakest
transmitter. The receive RF amplifier in the power amp does little
except eliminate any coaxial cable losses.
Suggestion: If you're trying to get answers from newsgroups and
mailing lists, kindly supply:
1. What are you trying to accomplish?
2. What do you have to work with? (Existing hardware and RF
environment).
3. What have you tried and what happened? (Not applicable in this
case, but very useful for techy problems).
My guess(tm) is that you're trying to improve the coverage to parts of
the house. Going through walls is not a great idea. One wall is
usually no problem. Two is somewhat difficult. Three or more is
possible but difficult to maintain a reliable connection.
The easist and simplest antenna is a reflector behind your existing
wireless router or access point. See:
http://www.freeantannas.com
These work well and are really cheap.
If you're able to run CAT5 to some place near the area you want to
cover, a 2nd access point will work.
If you can't run CAT5, it may be possible to use a WDS (wireless
distribution something) repeater if your existing unspecified hardware
supports WDS.
If you can't run CAT5 and don't want to deal with repeaters, it's
possible to build a repeater/bridge using power lines as a backhaul.
See:
http://www.netgear.com/products/details/WGXB102.php
--
# Jeff Liebermann 150 Felker St #D Santa Cruz CA 95060
# 831-336-2558 jeffl@xxxxxxxxxxxxxxxxxxxxxx
# http://802.11junk.com jeffl@xxxxxxxxxx
# http://www.LearnByDestroying.com AE6KS
.
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- From: Zycor
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