On 19 Nov 2004 15:46:28 GMT, firstname.lastname@example.org (Greg) wrote:
Since 90% of home networking is for internet use, and the remainder
still rarely has any files of decent size, wireless is quite suitabl
for the vast majority of home networks.
But if you need the speed, go for the Gigabit rated. Or fiber.
That's because 'the crowds' are now buying them. All they want is to
sit on their couch, surf the net and watch tv at the same time. They
don't move big amounts of data around and they don't need anything
faster than what their internet connection provides. They also have no
clue about security.
For all others there is gigabit wiring. I personally would put in the
highest grade you can get. Won't hurt a thing and will only cost a
Cat 5e is ok though walls. If you are going through the ceiling, around any
heating ducting, etc. you should use Plemun (spelling ??) Cat-5e (in fact,
I believe it is a code requirement in most areas). Plemun is fire
resistant, and is non toxic if it does catch fire.
That is if you are actually inside an air moving space, typically a raised
floor in a computer room or a suspended ceiling that is used for return air.
That is not typical in a home.
"Near" a duct is not a problem.
You are right about the toxicity. Plenum rated cable will not produce toxic
smoke. Riser rated cable will not spread flame. Plenum cable is riser rated
These show up on the cable jacket as "CL * P" or "CL * R"
* being the voltage rating "2" or "3"
CL2P is a 30v rated Plenum cable
Cat 5 will usually be type 2. "3" is for higher voltages.
You can substitute plenum cables for riser and class 3 for class 2 but not the
other way around.
I've stayed out of this discussion for a while, but it won't seem to die,
so here's my $.02.
I've used 802.11b in my house for a couple years now. My wife is totally
hooked on it.
On my machine, it's semi-reliable. I'm writing this on my laptop, from my
recliner, using 802.11g to run a remote desktop, which is working for the
moment. Sometimes the link lasts all day, sometimes it cuts out every
couple minutes. I've switched cards and access points, updated drivers,
tried just about everything. My machine still works intermittently. My
wife's machine runs pretty much flawlessly.
These problems aren't unique to me. I've studied a great number of support
boards and many people have these problems. Just as many have no problems,
so who knows. But it ain't dependable. Clearly in your situation, it isn't
I've been installing 5e cable in my walls to tidy up the rat's nest from
the office. If I can get it over to where I use the computer in my living
room, I'm running it there too and I'll only use the wireless as a backup
when I need to be mobile. I'll leave it running for the wife.
I also tried wireless for the observatory, maybe 50 yards from the access
point. same deal. Tried matching brands of access point and client cards.
No luck. Still unreliable. And running a robotic telescope on an
unreliable connection is asking for trouble.
Give me copper for my daily use! Give me wireless for convenience.
It's difficult to predict what the future will hold. Back in the
sixties, telephones were installed with hard wire screw terminal
blocks on 4 wire (Station D) cable. This was thought sufficient
because nobody would ever want more than two phone lines. Right?
For the present, a category 5e or category 6 installation might be
sufficient, but what about 10 - 15 years from now? The bandwidth for
all the on-demand services a normal household might need might be best
served with a fiber-optic connection.
At the very least, you should run some extra strings in your existing
cable runs to allow future cable (fiber-optics or whatever) to be
pulled and installed without tearing the walls up in the the house.
Nobody in the 50's imagined cable TV. Those of you who are old enough
to know still remember twin-300 ohm cable. Remember how you stripped
the wires to connect to your TV set (with a lighted match to melt the
Nobody in the 60's imagined computers in the home, RJ-45 jacks, cat 5
cables, home theatre systems. The very best homes were hardwired
with 2 pair telephone wire jacks (of the 4 prong variety). Modular
connectors did not exist.
The year 2004 doesn't signify the end of technical progress. Just
make sure that you have the cable ducts to be able to handle future
Wireless and/or digital can take care of that.
Super borad band. Already technology is going way ahead of us
ordinary Joe. They'll even transmit power via microwave, no high tension
wires for an example.
People have be prematurely announcing the death of copper since the first fiber
optic was produced but you can still shove a lot more data down a wire than
most people have.
Wireless is great for applications that are truly wireless but if you are
plugging in one wire (power) why not plug in them all?
You still can't come close to beating copper for price, performance and
security to a work station. Fiber is for backbones to lots of work stations.
Just as copper performance leaps ahead, so does fiber. Wireless is still
crawling in the mud by comparison.
When you run high frequencies through any wires, you'll get radiation. I
suspect the frequencies used for BPL (mhz), combined with the waveforms
used, will lead to radiation at a variety of frequencies due to the
Google turned up the following:
On Wed, 24 Nov 2004 12:30:17 GMT, berkshire bill
Not really. Depends on their efficiency as an antenna. Consider
coax. Cat-5 (UTP) is rendered a lousy antenna by the pairwise
twisting. Cogitate as follows:
Say a pair is carrying waveform, and length per full twist is l. l is
much shorter than wavelength on cable. A section of cable of length
l/2 propagates electromagnetic radiation to cancel that of adjacent
Not to mention the very low-voltage (fractional volt) signal and hign
Sorry, of course you're correct, thanks for clarifying.
I should have said "any power wires", since power lines are not shielded
or run in twisted pairs. The HAM radio folks say that the emissions from
power wires containing BPL transmissions can be detected up to a mile away.
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