These connectors are available, frequently, on epay for less that $20.
Wm Perry Co. also has them.


Colleen Beckman wrote:
I am restoring an old (1937) BC-312 and need the front panel connector.
The TM 11-850 manual refers to this as a SO-94. The Signal Corps
number is SC-D-2592.

All the surplus conversion guides say to remove this as it is "ugly" but
the original BC-312s had NO rear connection.

Send an email if you have one.

Thanks.