19 Aug
2007
19 Aug
'07
7:25 p.m.
IBM PS/2 Model 9595 chassis -- an 8595 chassis won't do
Syskonnect Microchannel FDDI cards
Any turbochannel cards (PMAZC, PMAD, PMAG-C -D -E -F, etc)
DEC Star coupler
CI cables
CI for any bus
BA441 chassis (I need four)
BA431 chassis
MS690 Memory
DEFQA
Cab kit for DEMFA
MS02-CA Memory
DEFTA
RA73 (did they make an RA74?)
ChipChat sound card
Roland CM-500
CIPCA
In addition, I will need two racks soon.
Thanks.
Peace... Sridhar
8:07 p.m.
e.stiebler wrote:
I have a bunch of machines I'm trying to build out.
Any
turbochannel cards (PMAZC, PMAD, PMAG-C -D -E -F, etc)
MS02-CA Memory
In addition, I will need two racks soon.
What do you need all that stuff for ? I just trew away a box of TURBOChannel stuff away.
Aaah!!
And racks ? which ones ?
I like the DEC beige 7' ones, but really most racks will do.
Peace... Sridhar
9:55 p.m.
On Sunday 19 August 2007 19:25, Sridhar Ayengar wrote:
Syskonnect Microchannel FDDI cards
CI for any bus
I've got some microchannel FDDI cards (some are SK, have to see how
many), and a spare XMI CI interface.
What do you have to offer in trade?
Pat
--
Purdue University ITAP/RCAC --- http://www.rcac.purdue.edu/
The Computer Refuge --- http://computer-refuge.org
20 Aug
20 Aug
3:56 a.m.
On Sun, 19 Aug 2007 19:25:09 -0400
Sridhar Ayengar <ploopster at gmail.com> wrote:
CI cables
CI cables are ordinary 50 Ohm coax
cables with TNC connectors. If you
rip off the bajonet shell of the BNC connector you can use cheapernet /
coax Ethernet cables. (TNC and BNC use the same inner part of the
connector. Only the locking shell is different.) You can also use
TNC-to-BNC adapters and BNC cables. Or get a bunch of TNC connectors, a
crimp tool and convert your old cheapernet / coax Ethernet cables to CI
cables...
--
tsch??,
Jochen
Homepage: http://www.unixag-kl.fh-kl.de/~jkunz/
10:09 a.m.
Jochen Kunz wrote:
On Sun, 19 Aug 2007 19:25:09 -0400
Sridhar Ayengar <ploopster at gmail.com> wrote:
Excellent. I happen to have a TNC crimper, so I'll just pick up come
connectors.
Peace... Sridhar
CI cables
CI cables are ordinary 50 Ohm
coax cables with TNC connectors. If you
rip off the bajonet shell of the BNC connector you can use cheapernet /
coax Ethernet cables. (TNC and BNC use the same inner part of the
connector. Only the locking shell is different.) You can also use
TNC-to-BNC adapters and BNC cables. Or get a bunch of TNC connectors, a
crimp tool and convert your old cheapernet / coax Ethernet cables to CI
cables... 
10:26 p.m.
At 03:56 AM 8/20/2007, Jochen Kunz wrote:
On Sun, 19 Aug 2007 19:25:09 -0400
Sridhar Ayengar <ploopster at gmail.com> wrote:
CI cables are 50 Ohm coax cables with "N" connectors. The outer shell
is quite a bit larger than a BNC or TNC.
CI cables
CI cables are ordinary 50 Ohm
coax cables with TNC connectors. If you rip off the bajonet shell of the BNC connector
you can use
cheapernet /
coax Ethernet cables. (TNC and BNC use the same inner part of the
connector. Only the locking shell is different.)
But this may be correct - the inner portion of a BNC/TNC connector
without the locking ring may just fit; they're all constant impedance
50 ohm connectors.
You can also use
TNC-to-BNC adapters and BNC cables. Or get a bunch of TNC connectors, a
crimp tool and convert your old cheapernet / coax Ethernet cables to CI
cables...
Modulo "N" to BNC adapters, yes.
-Rick
21 Aug
21 Aug
4:41 a.m.
On Mon, 20 Aug 2007 22:26:19 -0400
Rick Murphy <rick at rickmurphy.net> wrote:
CI cables are 50 Ohm coax cables with "N"
connectors. The outer shell
is quite a bit larger than a BNC or TNC.
I just went to the machine room and
checked. CI is definately TNC.
The inner part of TNC and BNC are identical. The inner part of [BT]NC
and N are _similar_, but not identical. The thread inside of the shell
of TNC is noticeable smaler then the thread inside of a N shell. (I
have N connectors on one of my osciloscopes and some Thick Ethernet
gear. So I can do a 1-to-1 comparision.)
Maybe you are confused by the outer diameter of the shell?
--
tsch??,
Jochen
Homepage: http://www.unixag-kl.fh-kl.de/~jkunz/
6:29 a.m.
At 04:41 AM 8/21/2007, Jochen Kunz wrote:
On Mon, 20 Aug 2007 22:26:19 -0400
Rick Murphy <rick at rickmurphy.net> wrote:
OK, that's not my recollection but it was quite a while back. My memory
was of large coaxial cable (similar to thickwire) with N connectors. I
didn't think you could put a BNC/TNC connector on large coax, but
apparently I'm wrong. Is the cable thin coax?
Am I just misremembering and confusing it with thickwire ethernet?
-Rick
CI cables are 50 Ohm coax cables with
"N" connectors. The outer shell
is quite a bit larger than a BNC or TNC.
I just went to the machine room and
checked. CI is definately TNC.
11:18 a.m.
On Tue, 21 Aug 2007 06:29:18 -0400
Rick Murphy <rick at rickmurphy.net> wrote:
OK, that's not my recollection but it was quite a
while back. My
memory was of large coaxial cable (similar to thickwire) with N
connectors. I didn't think you could put a BNC/TNC connector on large
coax, but apparently I'm wrong. Is the cable thin coax?
My CI cable is RG58
style, the same as used for thin Ethernet. AFAIK
"real" CI cable is RG213, (mostly) the same as used for thick Ethernet /
yelow cable. You can fit BNC/TNC connectors to RG213 for sure. You just
need the proper connectors. I have to admit: Usually there are BNC / TNC
used on RG58 style cable and N on RG213 style cable. But there are N
connectors for RG58 also...
Am I just misremembering and confusing it with
thickwire ethernet?
Most likely. I have some yelow cable Ethernet stuff with N
connectors.
(transceivers, terminators, cables, ...)
--
tsch??,
Jochen
Homepage: http://www.unixag-kl.fh-kl.de/~jkunz/
1:44 p.m.
On Aug 21, 2007, at 11:18 AM, Jochen Kunz wrote:
"Real" CI cables definitely aren't RG213. I have a good bit of
both here; they aren't similar at all. CI cables are more
reminiscent of semi-rigid coax, moving in the direction of hardline.
-Dave
--
Dave McGuire
Port Charlotte, FL
Farewell Ophelia, 9/22/1991 - 7/25/2007
OK, that's
not my recollection but it was quite a while back. My
memory was of large coaxial cable (similar to thickwire) with N
connectors. I didn't think you could put a BNC/TNC connector on
large
coax, but apparently I'm wrong. Is the cable thin coax?
My CI cable is RG58
style, the same as used for thin Ethernet. AFAIK
"real" CI cable is RG213, (mostly) the same as used for thick
Ethernet /
yelow cable.
22 Aug
22 Aug
4:04 a.m.
On Tue, 21 Aug 2007 13:44:26 -0400
Dave McGuire <mcguire at neurotica.com> wrote:
"Real" CI cables definitely aren't
RG213. I have a good bit of
both here; they aren't similar at all.
Thanks for the clarification. All CI
stuff I have seen is some third
party stuff. The only real DEC part was the star coupler.
CI cables are more
reminiscent of semi-rigid coax, moving in the direction of hardline.
Massively
over-engineered. - As usual at DEC. ;-)
--
tsch??,
Jochen
Homepage: http://www.unixag-kl.fh-kl.de/~jkunz/
21 Aug
21 Aug
4:32 p.m.
On Aug 20, 2007, at 10:26 PM, Rick Murphy wrote:
No, CI cables use TNC connectors, not N:
http://www.neurotica.com/misc/CI-connectors.jpg
-Dave
--
Dave McGuire
Port Charlotte, FL
Farewell Ophelia, 9/22/1991 - 7/25/2007
Sridhar
Ayengar <ploopster at gmail.com> wrote:
CI cables are 50 Ohm coax cables with "N" connectors. The outer
shell is quite a bit larger than a BNC or TNC. CI cables
CI cables are ordinary 50 Ohm
coax cables with TNC connectors. 
20 Aug
20 Aug
2:11 p.m.
On Aug 19, 2007, at 7:25 PM, Sridhar Ayengar wrote:
IBM PS/2 Model 9595 chassis -- an 8595 chassis
won't do
Syskonnect Microchannel FDDI cards
Any turbochannel cards (PMAZC, PMAD, PMAG-C -D -E -F, etc)
DEC Star coupler
CI cables
CI for any bus
BA441 chassis (I need four)
BA431 chassis
MS690 Memory
DEFQA
Cab kit for DEMFA
MS02-CA Memory
DEFTA
RA73 (did they make an RA74?)
ChipChat sound card
Roland CM-500
CIPCA
I have a sizeable pile of TurboChannel cards here, including a few
DEFTAs. I also have a pair of DEFQAs, but you'll need to work pretty
hard to talk me out of one of those. ;)
If you make it down for Labor Day you can take them back up with you.
-Dave
--
Dave McGuire
Port Charlotte, FL
Farewell Ophelia, 9/22/1991 - 7/25/2007
11:19 p.m.
I have most of the DEC items. Which ones do you still need?
Paul
On 8/19/07, Sridhar Ayengar <ploopster at gmail.com> wrote:
IBM PS/2 Model 9595 chassis -- an 8595 chassis won't do
Syskonnect Microchannel FDDI cards
Any turbochannel cards (PMAZC, PMAD, PMAG-C -D -E -F, etc)
DEC Star coupler
CI cables
CI for any bus
BA441 chassis (I need four)
BA431 chassis
MS690 Memory
DEFQA
Cab kit for DEMFA
MS02-CA Memory
DEFTA
RA73 (did they make an RA74?)
ChipChat sound card
Roland CM-500
CIPCA
In addition, I will need two racks soon.
Thanks.
Peace... Sridhar
6180
days inactive
6183
days old
14 comments
7 participants
participants (7)
-
emu＠e-bbes.com -
jkunz＠unixag-kl.fh-kl.de -
mcguire＠neurotica.com -
pat＠computer-refuge.org -
ploopster＠gmail.com -
rick＠rickmurphy.net -
useddec＠gmail.com