Equipment consists of amplifier equipment and related control apparatus contained in a wooden field case fitted with carrying straps. The case has space for the necessary batteries.
It may be used at the exact center of a loaded section but not at junctions of loaded and nonloaded sections. Two can be used in tandem in the same circuit.
Telephone EE-8 can be bridged across this equipment.
- Uses a self contained battery BA-40
- Telephone Repeater EE-89-A
- 14 July 1943
- change 1, 29 September 1944
- supplement, 5 July 1944