23 May
2009
23 May
'09
2:11 p.m.
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.
I seem to think that some of the 1950s mobile radio gear had big Jones
plugs - that might be a source. I have checked my bin - none here.
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.
Like D shell connectors, there are literally thousands of valid
configurations, with a relatively small percentage being standard
stock items. Getting C-J to do a special run was no big deal,
especially for IBM.
--
Will