[aclug-L] Re: Network coaxial cable 2-base-10 to Cat-5 10/100 connection.

[Thomas Wallis <wallis@xxxxxxxxxxx>]

On Fri, 3 May 2002, Jeff Vian wrote:

> 
> David Carmichael wrote:
> > 
> > Network coaxial cable 2-base-10 to Cat-5 10/100 connection.
> 
> the coax is 10base2
> much slower than 10mb (or 100mb ) on the RJ45 10/100baseT cable.

        10base2 (which is Thinwire Ethernet) is one of the three common
early forms of Ethernet.  Do you have a "T" connector on each NIC card?  
And wire that runs between the 2 "T" connectors?  Is there a terminator 
on each T connector?  If it is really Thinwire Ethernet it should look 
something like this:

            OT------------------------------------TO
             P                                    P

O is the terminator on the "T" connector.  T is the "T" connector and P is
the PC NIC card.  The other common forms of early Ethernet were Thickwire 
Ethernet and Twisted Pair (which is the most common now).  

Many older Ethernet hubs I have seen have a BNC connector on them as well
as the RJ45 style Twisted Pair outlets.  It was common on SMC hubs, which
you should be able to find used easily.  There is a computer surplus place
on Hillside and Harry that probably would have some of these older hubs.  

                                Hope this helps,

                                T W

 
> 
> Yes there are transceivers to convert from bnc to rj45.... expensive.
> The last time I bought one of those it was nearly $100
> 
> Easier and much less expensive way if you MUST stay with existing
> cabling would be to get a nic that has the bnc connector on it.  I have
> several and I know others in the local area there do as well.
> 
> You might also try National Computer Resources outlet store for the
> cards with bnc connections, or move the old nic from the pc being
> replaced.
> 
> > 
> > Is there such a beast?
> > 
> > I have a coaxial cable ran between two offices and currently the hardware
> > that I am using is working..
> > 
> > The only trouble is.. will be upgrading a computer (this weekend!) and it
> > has a built-in 10/100 RJ45 connection and not a BNC connection, like the
> > older computers Linksys ISA card has.
> > 
> > I have a choice of trying to run a new cable and or find some sort of
> > interface... while I would really like the new system to connect to the
> > router at 100mbps I know that current DSL connections don't even come close
> > to 5mbps which is half the speed that the 2-base-10 coaxial cable can
> > handle.
> > 
> > I know that two member local readers of this email group offered to help
> > string the needed cat-5 cable.. and due to events on my end and then on his
> > end we just have not been able to get together and get the job done.
> > 
> > --David
> > 
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Disclaimer: All opinions expressed here are my own and not those of WSU.

EMAIL address:  wallis@xxxxxxxxxxx    

   


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