Artifact Details


Circuit board

Catalog Number



Physical object

Identifying Numbers

Other number 144621 Etched on solder side
Other number 497-140A Etched on edge of solder side
Other number 590630 Stamped on component side
Other number MPX-0 F12 On gummed label on handle on component side


overall: 3/4 in x 5 in x 7 in


Object is a PCB bearing a row of eight discrete transistors, plus diodes and resistors. The PCB is in a metal frame and has a connector with a double row of round pins. Opposite the connector is a row of nine test-points. On the back is handwritten in marker "12F OUT MPX" which agrees with the gummed label reading "MPX-0 F12".


Component/circuit board