On Sun, 10 Jul 2005 20:23:55 GMT, "William Gould"
<(E-Mail Removed)> wrote:
>I am considering buying the Netgear DG834G which will be connected in a
>wireless maner to my PC so that I do not need to use a telephone extension
>cable for my ADSL connection - which is currently a trip hazard!!
It's not a telephone extension. It's a CAT5 ethernet cable running
either 10baseT (10 Mbits/sec) or 100baseTX (100 Mbits/sec). The same
cable is used for voice telephony (POTS) but the designation is by the
function.
>I was told that this may cause a performace hit, especially for the lower
>bandwidth connections (I am currently using 512KB).
Nope. Your perceived speed is limited by the slowest bottleneck on
the system. At 0.5Mbit/sec sec, your ADSL connection approximately
matched by the very slowest speed of an 802.11b/g wireless connection
(1Mbit/sec) which hopefully, you will never reach.
>Since I will be only
>about 7 metres from the wireless access point in another room on the same
>floor, does anyone think that I may suffer a performance hit using the
>DG834G over using a telephone extension cable with ADSL modem?
The enemies of wireless connections are (in order of decreasing
importance):
1. Interference
2. Attenuation
3. Multipath and reflections
Interference is a problem is you're located in a tall glass building,
with a view of the city and it's hundreds of other 802.11b/g users.
You could be right next to your access point and still have problems
communicating in the presence of interference. Also add microwave
ovens, cordless phones, X10 video cameras, and other sources of 2.4GHz
noise.
Attenuation is deteremined by the building construction. If the
inside walls are made of some material impervious to 2.4Ghz RF, you
will not have enough signal to maintain a useable connection. The
usual cuprit is aluminium foil backed fiberglass insulation in the
walls.
Multipath and reflections are where you have more than one path
between the access point and your wireless client. At some positions,
they add, at others, they cancel. In both cases, they are not stable
and will vary. It is difficult to detect or calculate multipath
problems. Wildly varying indicated signal strengths are a good clue.
The symptoms are that you can obtain a connection, but might have
trouble maintaining the connection.
--
Jeff Liebermann
(E-Mail Removed)
150 Felker St #D
http://www.LearnByDestroying.com
Santa Cruz CA 95060 AE6KS 831-336-2558