[dba-Tech] Wireless Problem Solved

Jim, 
 I guess we need to define what you mean by "hot and cold lines". If you
applying these term as (hot)=L1 and (cold)= Neutral in typical 120v utility
provided power then we are talking about the same thing.

When L1 (the small prong on the plug) and Neutral (the larger prong on the
plug) are reversed that is called "reversed polarity",  Most of these
systems are equipped with polarity recognition system. Meaning when reversed
polarity is detected they shut down and generally give indication of the
condition, allowing no harm to any attached (or it self for that matter)
device.

We may not be talking about the same thing....   



WBR
Robert

-----Original Message-----
From: dba-tech-bounces at databaseadvisors.com
[mailto:dba-tech-bounces at databaseadvisors.com] On Behalf Of Jim Lawrence
Sent: Friday, August 17, 2007 1:20 PM
To: 'Discussion of Hardware and Software issues'
Subject: Re: [dba-Tech] Wireless Problem Solved

Hi Robert:

You are correct. There are only problems when the hot and cold lines get
crossed or there is a major short like a toaster has a melt down then the
recognition system is irrelevant.
 
Many years ago there was a LAN network system called ARCNet. It was also
known as the bard-wire network because of its ability to run on virtually
any wiring. To compensate the NIC cards were really built heavy duty. The
circuits were large enough to solder with a wood burning tool and the
Capacitors were a thick as a finger. I have yet to see such heavy-duty
equipment in today's computers.

I have always mistrusted these 'through the house wiring type networks' but
in some cases they may be OK... It is just that the local network community
say they are the greatest things... for business as components are always
failing.

Jim  

-----Original Message-----
From: dba-tech-bounces at databaseadvisors.com
[mailto:dba-tech-bounces at databaseadvisors.com] On Behalf Of Robert
Sent: Friday, August 17, 2007 4:29 AM
To: 'Discussion of Hardware and Software issues'
Subject: Re: [dba-Tech] Wireless Problem Solved

Jim,
 I was under the impression that most, in not all, now have built in
polarity recognition system?

WBR
Robert

-----Original Message-----
From: dba-tech-bounces at databaseadvisors.com
[mailto:dba-tech-bounces at databaseadvisors.com] On Behalf Of Jim Lawrence
Sent: Friday, August 17, 2007 1:47 AM
To: 'Discussion of Hardware and Software issues'
Subject: Re: [dba-Tech] Wireless Problem Solved

Hi Rocky:

This solution is a great way to do LAN wiring without the need to re-run
cables around a building. The concept has been out there in various
implementations for years but there are a couple of gotcha'.

1. The house/building wiring can be poor... no better than bad LAN wiring.
House/Building wiring is generally of a poor quality in compared with
standard network wiring. The impedance should be within a tight range...
notice the numbering on the LAN cabling. Poor quality wiring can eventually
fry you NIC cards and routers.
2. The whole scheme requires that the wiring has been setup correctly. No
cross-overs between the hot and cold alternate cabling. A good profession
electrician will have wired a house correctly but get a few amateurs mucking
around and you will never know which line in hot. (Ever wonder why the plugs
have two different sized holes/prongs) If your circuit somehow gets crossed
or shorted, you can easily blow out all your electrical equipment.

Just a note.

Jim
     

-----Original Message-----
From: dba-tech-bounces at databaseadvisors.com
[mailto:dba-tech-bounces at databaseadvisors.com] On Behalf Of Rocky Smolin at
Beach Access Software
Sent: Thursday, August 16, 2007 5:23 PM
To: dba-ot at databaseadvisors.com; List
Subject: [dba-Tech] Wireless Problem Solved

Couple of years a go I had a wire run from the router down to Pundit's
office.  Last year the wire failed somewhere in the middle.  Re-running the
wire was an unattractive proposition so I got a wireless adapter for her but
the signal was weak and it was shaky.  So I upgraded the router to this
super netgear job.  Good router still not strong enough signal.  Lots of
teeth gnashing and unhappiness.

A month ago I got an Airlink repeater.  The signal was not incredibly strong
but not reliable.  Changed channels.  No soap.  Talked to numerous tech
supporters all over the Indian sub-continent.  Today I returned it to Fry's.


What I came home with was a couple of widgets from Netgear called
'Wall-Plugged Ethernet Extender Kit'. You RJ45 one of them to your router,
then plug it into the wall.  You RJ45 the other one to the target computer
and plug it into the wall.  And viola! It uses the wiring in the house in
place of the CAT-5.  So now she's commected with what seems to be a very
solid connection.  Just like a ran a wire down there.  4 minute install.  No
software.  No configuring.  Plug 'n' Play.

If this works as advertised, there's no need to run CAT-5 anywhere or even
do wireless (unless you want to walk around with a laptop.  Just use the
house wiring.  

How long has this been going on? Who knew?  (Probably some of you, I'm
sure).


Rocky

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