US WW2 Signal Corps Telephone Repeater EE-89-A
In a very good condition an US WW2 Signal Corps Telephone Repeater EE-89-A in it's original case.
These repeaters were used as an in-line booster to give improved phone transmission and extend the talking range between wire connected phones in field use and combat conditions.
The repeater comes with the instruction label and is nicely dated 1943.
Very nice for a signal corps display!