22 May
2009
22 May
'09
6:46 p.m.
Roger Holmes wrote:
In case anyone else wants the measurements of the Jones plugs, the
sockets are 35mm by 78mm or in imperial, 1 3/8 by 3 1/16. The pin
orientations were as I described, alternate rows of horizontal and
vertical.
I checked at our radio museum yesterday, but no luck. We have dozens and dozens
of Jones plugs and sockets, largest I found were 24 (3*8) and 33 (3*11) pin.
The 40-pin requirement is pretty unusual. 4,6,8,10,12,15,18 pin are very common,
popularity starts to drop off sharply after that in IME. It might be possible
to trim & combine a combination of some more common plugs to fit, particularly
if the the actual needs for the task don't require all 40 pins. Worst case, it
is possible with Jones connectors to break a plug body (if male pins) to remove
individual pins, solder wires to the pins, apply heat shrink insulation and
then insert the pins one by one.
A current Cinch-Jones catalog from the web shows connectors up to 33 pins.
Either the 40-pin has been dropped over the years, it was something special for
IBM, or it's not a Jones connector but something close/similar.