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

[David Carmichael <dec2955@xxxxxxxxxx>]

Yes I know I have my terms a bit mixed up... but it is a thin coaxial cable 
..with a BNC connector, that I have between rooms in my home and then the HUB 
that I have has a BNC UPLINK connection where the network is then connected to 
my BROADBAND ROUTER which is then connected to my DSL modem.

10-Base-2 uses coaxial cable.(RG-58 50-ohm cable)
10-Base-T uses cat-3/4/5 cables W/RJ45 connection
100TX and higher currently use RJ45 with Cat-5/7 cables... but some are moving 
to fiber optics.

--David

  ----- Original Message ----- 
  From: Thomas Wallis 
  To: Jeff Vian 
  Cc: discussion@xxxxxxxxx 
  Sent: Friday, May 03, 2002 9:59 AM
  Subject: [aclug-L] Re: Network coaxial cable 2-base-10 to Cat-5 10/100 
connection.



  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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