[R-390] Digging around at work

[mikea]

On Fri, Jul 27, 2007 at 03:36:38PM -0400, Tracy Fort wrote:
> 
> 
>  I was digging around at work last night and came across an unusual
> connector. It's not unusual in the fact that it is a UG-421B/U connector. It
> does fit on the Balanced 390 connector properly. I'm sure most of you know
> that. What's unusual is that this particular connector is used as a bus
> terminator on the Digital audio bus in some equipment that we maintain. It
> looks as though I can remove the rear of the connector and extract the pins
> which have a 128 ohm resistor soldered between them. I'm think that I can
> make a short adapter to hook up to a BNC cable or such. I might be able to
> get a few more of these things too. I'll let you know.

The balanced twinax connectors are used on IBM AS/400 (and, IIRC, on 
IBM System/36 and System/38) minicomputers, as network connectors. 
They're easy to find here in the Oklahoma City area. 

I never heard of them being used in any audio gear at all; they seem 
awfully bulky for modern gear. 

-- 
Mike Andrews, W5EGO
mikea at mikea.ath.cx
Tired old sysadmin