[time-nuts] Strange connectors
bill at iaxs.net
Mon Jun 20 16:38:47 EDT 2005
Ah, yes, incompetence explains it. I'd never seen twinax
connectors in use, but there's a twinax antenna connector
on the back of my 1955 R-390 receiver that fits an IBM
Twin BNC has one each male and female pin with a split
level insulator that exposes the male pin (hope this
gets through your spam checker).
From: phk at critter.freebsd.dk [mailto:phk at critter.freebsd.dk]On Behalf Of
Sent: Monday, June 20, 2005 2:59 PM
To: bill at iaxs.net; Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] Strange connectors
In message <00f501c575d0$77ce8e00$0500a8c0 at darius.domain.actdsltmp>, "Bill
>Turns out that twinax is the IBM token ring cable and connector
>that screws in.
Actually, that's not the case.
"Twinax" was the shielded twisted pair 5250 terminal bus for Series/3
(System 34, 36 & 38) "MiniMainFrames" from IBM.
The original IBM connector was more or less N-style.
Shielded twisted pair as a concept has been known for a lot longer
however the oldest use I know off was for microphones in the pre
WWII time frame.
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
phk at FreeBSD.ORG | TCP/IP since RFC 956
FreeBSD committer | BSD since 4.3-tahoe
Never attribute to malice what can adequately be explained by incompetence.
More information about the time-nuts