[Milsurplus] ID Plug-ins.

[Robert W. Downs]

Groups,

In a batch of mostly military radio bits that ended up on my patio table
were two little plug-in units.  I hope that someone will recognize them. =
 =


Black panels about 2-3/8" x 4".  One is aluminum and one is phenolic, I
think.  Two handles of 1/4" round bar left and right.  Black bar type kno=
b
in middle has metal pointer.  Front panel of one is marked 1, 2, 3, 4 and=

the other 5, 6, 7, 8 @ 90 degree intervals around the knob center. =

Switches do not have detents, but you can feel the switch contacts engage=

near each number.  Behind each panel is a rectangular metal box.  The one=

with the metal panel has the box mounted against the back of the panel. =

The other one has a shorter box mounted on four standoffs.  On the rear o=
f
the boxes is a brown plastic plate with a 5-pin male connector in the
center.  Plates are both marked "NATIONAL CO., INC.  MALDEN MASS."  The
short box has the remains of a National decal on the top.

Any ideas?  If so, anyone need them?

73
Robert Downs
<RWDowns_WA5CAB@compuserve.com>
Houston