What does "BNC" mean?
Harold Winard
but here goes: Does anyone know...with authority
to back it up...what the complete meaning of
"BNC" is? I've seen several versions of what it
stands for but none that have impressed me as being
the *real* meaning. The same goes for that other
type of RF connector, the "TNC."
Also, does anyone know when the BNC and TNC connectors
were developed...and by whom?
Thanks very much,
Harold Winard
Douglas W. Jones,201H MLH,3193350740,3193382879
by h...@oscar.bellcore.com (Harold Winard):
> I don't know if this is covered in an FAQ or not,
> but here goes: Does anyone know...with authority
> to back it up...what the complete meaning of
> "BNC" is?
B stands for bayonet
> I've seen several versions of what it
> stands for but none that have impressed me as being
> the *real* meaning. The same goes for that other
> type of RF connector, the "TNC."
T stands for threaded
Beyond that, I believe the C stands for Connector.
The N in the middle, I don't know. Type N Connector?
Doug Jones
jo...@cs.uiowa.edu
Michael Schuster
The authoritative answer (minus spelling mistakes, heh) is:
BNC is a Bayonet Neill-Concelman connector.
TNC is a Threaded Neill-Concelman connector.
--
Mike Schuster | schu...@panix.com | 70346...@CompuServe.COM
------------------- | schu...@shell.portal.com | GEnie: MSCHUSTER
Steve McKinty - SunSoft ICNC Grenoble
Messrs Neill and Concelman (sp?), hence Bayonet Neil-Concelman
and Threaded Neil-Concelman. I don't know when though.
Steve
--
Steve McKinty
Sun Microsystems ICNC
38240 Meylan, France
email: smck...@france.sun.com
gordon hlavenka
This gets discussed here once for each 4 or 5 repetitions of
"MAKE.MONEY.FAST", but that's what the 'net is for, right?
I seem to recall that BNC stands for Bayonet Neil-Councelman (I may
have "Neill" and "Concellman" spelled wrong :-) and TNC stands for
"Threaded...". And, type N just stands for plain old Neil.
So that's the "what" and the "who". Now you can sit back and read the
responses of other people who have other theories, and those who can
answer your "when" question.
Oh-- What about SMA?
--
-------------------------------------------------------------
Gordon S. Hlavenka cgo...@vpnet.chi.il.us
Who hasn't yet seen an MSWIN problem that ALT-F4 wouldn't fix
Dick Kaulfuss
: In article <36p756$r...@athos.cc.bellcore.com>,
: Harold Winard <h...@oscar.bellcore.com> wrote:
: >I don't know if this is covered in an FAQ or not,
: >but here goes: Does anyone know...with authority
: >to back it up...what the complete meaning of
: >"BNC" is? I've seen several versions of what it
: >stands for but none that have impressed me as being
: >the *real* meaning. The same goes for that other
: >type of RF connector, the "TNC."
: >
: >Also, does anyone know when the BNC and TNC connectors
: >were developed...and by whom?
: The authoritative answer (minus spelling mistakes, heh) is:
: BNC is a Bayonet Neill-Concelman connector.
: TNC is a Threaded Neill-Concelman connector.
Sorry guys, you're all way off the mark here. According to the "IEEE
Standard Dictionary of Electrical and Electronics Terms" (adopted as
American National Standard ANSI/IEEE 100-1988, so it must be right :-)),
"BNC" stands for "Baby 'N' Connector". I kid you not.
I distinctly remember reading an article some years ago (can't remember
where, so I've never been able to find it again) which stated that Neill
(N-Type) and Concelman (C-Type) were working for RCA at the time (1950's?).
I think there was a patent granted in their names, so presumably anyone
with the inclination could look it up and verify.
Dick
Ren Tescher
From a posting I saved a couple years back...
ren
>From: v02...@stortek.com (George Noyes)
Subject: Re: Question about origin of name of BNC connector
A whole series of connectors were developed by Bell Lab engineers, Paul Niell
and Carl Concelman who recognized that UHF connectors did not work real well
at higher frequencies, thus the "constant impedence connectors" were born.
"BNC" is derived from the "inventor's" names: Bayonet Niell-Concelman
connectors. Others: "TNC" the Threaded Niell-Concelman connector. "N"
connector was designed by Niell, whereas "C" was designed by Concelman.
Dr. Paul Shuch, N6TX has a good historical biography on this subject as part
of "The ARRL, UHF/Microwave, Experiments Manual", Chapter 5.
You may note the relationship between "N" connectors and "BNC" connectors,
as BNC's are the "bayonet" version of an "N", the male N's will mate with
female BNCs (not great, but ok for bench in a pinch!).
Also, for the record, UHF connectors, does stand for Ultra High Frequency.
When these were developed in 1930, anything above 30 MHz was considered,
UHF. UHF connectors atleast enabled more power down the transmission line
above 30 MHz as compared to the terminal posts that were used!
73's George Noyes, W1XE
Steve_Allen
: I don't know if this is covered in an FAQ or not,
: but here goes: Does anyone know...with authority
: to back it up...what the complete meaning of
: "BNC" is? I've seen several versions of what it
: stands for but none that have impressed me as being
: the *real* meaning. The same goes for that other
: type of RF connector, the "TNC."
Bayonet Needle Connector; Threaded Needle Connector. (According to the
ARRL antenna handbook)
-Steve N2WSA
Greg Thoman
>
> Sorry guys, you're all way off the mark here. According to the "IEEE
> Standard Dictionary of Electrical and Electronics Terms" (adopted as
> American National Standard ANSI/IEEE 100-1988, so it must be right :-)),
> "BNC" stands for "Baby 'N' Connector". I kid you not.
I was robbed! ;-) My copy of IEEE 100-1992 contains no entry
for BNC, nor one for TNC.
Perhaps someone concluded the definitions were of no
consequence ("of historical interest only") and so dropped 'em out?
Hmmm....
--
-----
Greg Thoman: The opinions expressed herein are mine alone, and I am
solely irresponsible for them.
Alan Yelvington
Barrel Nut Connector
Nick Ciarallo
>Harold Winard (h...@oscar.bellcore.com) wrote:
>: to back it up...what the complete meaning of
>: "BNC" is? I've seen several versions of what it
>
>Bayonet Needle Connector; Threaded Needle Connector. (According to the
>ARRL antenna handbook)
>-Steve N2WSA
As far as I know BNC stands for Baynonet Navy Connector. This connector
was originally designed for the navy hence the name.
Nick
Ross Alexander
It must be alt.urban.legends night here on sci.electronics. My claim:
BNC stands for Bayonet Neil-Concelmann. Neil and Concelmann were the
two AT&T engineers who designed the type N (Neil), the type C
(Concelmann), the BNC, and the TNC (Threaded Neil-Concelmann)
connectors way back in the early 40's.
Authority: not the Antenna Book, but some other ARRL manual. Maybe the
UHF manual(s).
regards,
Ross ve6pdq
--
Ross Alexander VE6PDQ r...@cs.athabascau.ca,
(403) 675 6311 r...@auwow.cs.athabascau.ca
Television is chewing gum for the eyes. -- Frank Lloyd Wright
Peter Simpson
...it certainly should be in the FAQ...
Peter
>You can find the origin of the names of BNC, TNC, etc in an
>article entitled "A Designer's Guide to RF Connector Selection,"
>RF Design, September/October 1980.
>BNC stands for bayonet Neill-Councelman, named after Paul Neill
>of Bell Labs and Carl Concelman.
>Sincerely,
>Paul
>N1FB
---
Peter Simpson, KA1AXY Peter_...@3com.com
3Com Corporation (508) 836-1719 voice
Northborough, MA 01532 (508) 393-6934 fax
I speak only for myself, 3Com doesn't pay me to speak for them, so I don't.
talli koppelez
British Navel Connector
P.Bennett
Peter Bennett VE7CEI | Vessels shall be deemed to be in sight
Internet: ben...@triumf.ca | of one another only when one can be
Packet: ve7cei@ve7kit.#vanc.bc.ca | observed visually from the other
TRIUMF, Vancouver, B.C., Canada | ColRegs 3(k)
Chris Scott
> Michael Schuster (schu...@panix.com) wrote:
> : In article <36p756$r...@athos.cc.bellcore.com>,
> : Harold Winard <h...@oscar.bellcore.com> wrote:
> : >I don't know if this is covered in an FAQ or not,
> : >but here goes: Does anyone know...with authority
> : >to back it up...what the complete meaning of
> : >"BNC" is? I've seen several versions of what it
> : >stands for but none that have impressed me as being
> : >the *real* meaning. The same goes for that other
> : >type of RF connector, the "TNC."
> : >
> : >Also, does anyone know when the BNC and TNC connectors
> : >were developed...and by whom?
>
> : The authoritative answer (minus spelling mistakes, heh) is:
>
> : BNC is a Bayonet Neill-Concelman connector.
>
> : TNC is a Threaded Neill-Concelman connector.
>
I concur with these. I recall reading an OLD antenna text that talked
about these *recent* developments. Nope don't have the book.
--
Chris.Scott.WKU.EDU Chief Engineer, Public Radio- Western KY U
Telco: (502) 745-3834 Hm & Fax: (502) 781-1232
...just another insignificant VAX user. \\\//
(o o)
--------------------------------------------ooO-(_)-Ooo-----------------------
Michael Schuster
>
>British Navel Connector
I have several British friends, and I can absolutely confirm that none of
them has a navel which looks like a BNC connector. So there :-)
Steve McKinty - SunSoft ICNC Grenoble
>
> British Navel Connector
Ouch!
:-)