SI
SI
discoversearch

We've detected that you're using an ad content blocking browser plug-in or feature. Ads provide a critical source of revenue to the continued operation of Silicon Investor.  We ask that you disable ad blocking while on Silicon Investor in the best interests of our community.  If you are not using an ad blocker but are still receiving this message, make sure your browser's tracking protection is set to the 'standard' level.
Technology Stocks : LAST MILE TECHNOLOGIES - Let's Discuss Them Here -- Ignore unavailable to you. Want to Upgrade?


To: JMD who wrote (4116)6/9/1999 8:34:00 PM
From: Carolyn  Respond to of 12823
 
Thank you. I know you were talking about networking within the house, but that also means that most people will not rewire their (aging) homes - it is easier to go 'wireless.' Not many people care if Johnny's computer is not connected to theirs (they probably wouldn't want it to be!), but they might want their microwave, coffee maker, security system, etc., connected to theirs.



To: JMD who wrote (4116)6/9/1999 8:34:00 PM
From: Frank A. Coluccio  Read Replies (1) | Respond to of 12823
 
JMD, and Thread,

You may be interested to know that PC NICs (network interface cards) and hub ports which employ twisted pair used for Ethernet are designed to the impedance and longitudinal characteristics of ANSI EIA/TIA Category 3, 4 and 5 grade cables. They design worst case operating ranges based on these characteristics, and that goes for noise rejection and canceling, and immunity to RFI and crosstalk, etc., as well.

When the distances are short, and when there isn't the kind of noise in the surrounding environment that would bother it, you get away with plain old telephone quad wire. But when you go to the 100 Mb/s rate, especially, and kick up the distances a notch, don't call the vendor or look to collect on warranties if you have a problem, unless you are using the prescribed grade of cable, first. You could end up wasting your time, otherwise.



To: JMD who wrote (4116)6/11/1999 1:59:00 PM
From: mrknowitall  Read Replies (1) | Respond to of 12823
 
Mike, if the distances are short enough and you don't run it across or around anything with an electrical field emitting from it, almost any solid conductor twisted-pair wire of 26 Gauge or greater "telephone wire" will do within the confines of a small home or apartment.

For the rules and "specs," consult one of the wiring guides from the various cable manufacturers, i.e., Belden. Higher speeds require reduced cross-talk and I wouldn't waste my time with anything other than real "Category 5" cabling beyond 30-50 feet - the installation is the painful part, and it costs just as much to do the labor for the CAT 2 as it does for it's more expensive cousin, CAT-5. Don't scrimp on connectors, either. Buy connectorized cable unless you have to pull it through small conduit or small holes. If you're really into tools and have the budget, buy your own termination kit (includes the crimping tool) and practice on a few before you run the wire.

Wireless and "through the power-line" links have some applications, but interference creates some interesting problem potentials that are hard to predict.

Best of luck . . .
Mr. K.