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Thread #: 1419

What is a BNC connector?

AllYorBaseRBelong2Us

Sun Feb 17 06:21:06 2002

[size=24] is it?[/size]

(Edited by AllYorBaseRBelong2Us at 12:22 am on Feb. 17, 2002)

DuffMan

Sun Feb 17 07:04:51 2002

I used to know this but it escapes me.

However a quick search on google reveals that it is the type type of connector that coaxial network cable has.

DeAthe

Sun Feb 17 07:18:03 2002

Yea, BNC Connectors are the style of connector used in Coax.

Old Skewl.

DuffMan

Sun Feb 17 07:50:17 2002

Hey they're not that old, I was using it exclusively for my home network  until a couple months ago!
DeAthe

Sun Feb 17 10:37:10 2002

OLD SKEWL!!

Hehehe, I haven't used a BNC for, 3 years. :) I'm l33t. But I might as well have been, only reason I switched to Cat5 was the lesser amount of cabling going everywhere.

DeAthe

Sun Feb 17 10:38:03 2002

However, in post whorishness, I felt the need to continue.

I currently run a 100 switched lan that has some really nice speeds, it's faster than some of the HD's I have in my cheapy linux box.

Imitation Gruel

Sun Feb 17 15:26:51 2002

However, in post whorishness, I felt the need to continue.

[color=magenta][size=100]INDEED !![/size][/color] [color=blue]

PaulHill

Sun Feb 17 17:30:18 2002

They're those funny twisty connectors on Thinnet and overpriced monitors.

I encountered them on an ARCNet system I was replacing with a Windows Workgroup. Revel in my experience.

Jeremy Reimer

Sun Feb 17 20:34:35 2002

We use them all the time at work to connect NTSC video signals to PCI digitizer boards.  

The advantage is that the cable is fairly thick, so the signal quality is better than over Cat-5, and there is a funny little ring thingy that you can turn clockwise about 45 degrees or so that "locks" the cable to the BNC connector, so it won't slip out even if yanked.

Harbinger

Sun Feb 17 21:31:45 2002

I've heard historically that it stands for British Nut Connector.  I've never felt the compulsion to verify this myself.  Anyone have this knowledge in their grey matter?
PaulHill

Mon Feb 18 00:37:07 2002

I believe this could be true.


and there is a funny little ring thingy that you can turn clockwise about 45 degrees or so that "locks" the cable to the BNC connector, so it won't slip out even if yanked.

It does, however, make your expensive monitor topple over and smash on the floor! Hurrah!

Network cables are even more fun. Especially when you manage to trip and not only destroy a DEC LPx, not only rip a cable connector out of the wall, but also bring down an entire segment of a well known soap powder manufacturer in Port Sunlight.  This is known as a "hat trick"

Stainless

Wed Feb 20 20:46:15 2002

I vaguely recall BNC as being Bayonet Nut Connector.

The bayonet being the two little nubs that the nut latches on to.

OscarWilde

Thu Feb 21 04:47:15 2002

Aren't BNC's limited to the distances that can be had between the two connections? Plus don't BNC's have to connect as daisy chains or something like that?

I remember how all the old schools ethernet cards all had BNC and RJ-45 jacks at the back. Now they only have the single typical ethernet style jack and what not.

WHAT NOT!!!

phe34r!

HitScan

Thu Feb 21 14:02:20 2002

Aren't BNC's limited to the distances that can be had between the two connections? Plus don't BNC's have to connect as daisy chains or something like that?

All cables are limited in length. If I reacall, Coax can be run longer than Ethernet due to the fact that it's sheided, but it's a pain in the ass to make so noone likes it.
Yes, the coax had to be run into a "T" connector at the network card. I'm not sure if the last workstation on a line could have it just plugged in or if it always had to be in a loop. I skipped that era of networking tech ;)

I remember how all the old schools ethernet cards all had BNC and RJ-45 jacks at the back. Now they only have the single typical ethernet style jack and what not.

Ayup, and due to the fact that I can probly make 5 Ethernet cable ends to each of my coax, coax kind of fell out of style. Ethernet rocks.
Stainless

Thu Feb 21 18:13:24 2002

Ethernet on Coax - shitty old 10base-2 - runs a whopping 185 metres. But you had to run it a daisy chain and terminate both ends.

This leads all sorts of fun crap like users taking down segments and terminator voodoo

Not to mention it was way more expensive than 10Base-T. Only token ring cabling made 10Base-2 look cheap.

pauli

Thu Feb 21 19:53:50 2002

fiber makes thinnet look cheap. so does thicknet.

i was always told bnc is british naval connector, which leads to neverending jokes about how gay 10base2 is.  HAN HAN HAN!

i've got bnc hookups on my 17" monitor. however, i've got no cables for it, and just one rca-bnc converter i could plug into it, though it would do me no good.  

HitScan

Thu Feb 21 20:57:33 2002

i've got bnc hookups on my 17" monitor. however, i've got no cables for it, and just one rca-bnc converter i could plug into it, though it would do me no good.

Oops. Shame we didn't do this thread 3 weeks ago, I just tossed one of those BNC monitor cables. :biggrin:
Harbinger

Fri Feb 22 01:31:06 2002

I'm not sure if the last workstation on a line could have it just plugged in or if it always had to be in a loop. I skipped that era of networking tech ;)

The NICs at either end had a terminator that installed on the other end of the T connector.  If I had one handy, I'd snap a pic for you.

IIRC, one of the terminated ends was supposed to be grounded as well -- not that I've ever seen anyone do this, mind you.