Provides necessary mechanical supports, cable assemblies and accessories for testing radio set an-arc-52, distributes and controls primary power tothe units of the an/arc-52 radio set, provides jacks for plugging in audio oscillator microphone and a headset, test points provided for auxillary output, avc, 225v, single ph, two ph, or three ph at 400 cyc, and dc, oper- ating power requirement, ac, 115v, 400cyc, three ph, dc, 27.5v
