United States. Air Force. Cambridge Research Laboratories
overall: 1/2 in x 4 1/2 in x 6 in
Unlike other modules in this series this one has no frame around it and no module type etched on the PCB. It consists of an array of 14 semiconductor diodes and some resistors assembled in a three-dimensional array, clearly hand-constructed. A diode symbol or icon is etched on each side.