Odd connectors (was: 'cross computer movers referrals)

From: John Lawson <jpl15_at_panix.com>
Date: Mon May 21 07:58:04 2001

  This is a very well-used connector from 40 years back... you can still
find them languishing in the bigger surplus shops. But they are expensive
to buy new (if you can find one new).

  The good news is, that the center element in the connector is the
standard 'banana' plug size, and in fact the 'banana' connector,
especially the dual version, is also known as a GR connector.. and yes it
gets confused with the older, full shielded, constant-impedance one that
is on your generator.

  So, just prepare a cable from 50 Ohm coax of good make, use RG 58 or
similar (NOT 75 Ohm TV cable!!) attach a single banana plug to the center
conductor of the cable, and attach a (short as possible) lead with an
alligator clip to the shield of said cable. Insert the plug into the
center of the GR connector, and clip the shield wire to the outer shell of
the GR connector. Terminate the other end of the cable in the connector
of your choice, or do like I always did and just use the center for a
probe... ;} no, really... terminate the other end in a BNC for maximum
flexibility... you could buy a good-quality 50 Ohm BNC-to-BNC cable and
cut off one end to attach the banana plug and spring clip.

  This will get you up and running very well, and also allow you time to
scrounge for a 'proper' cable.

  Hope this helps...

 Cheers

John
Received on Mon May 21 2001 - 07:58:04 BST