I picked up 23 plug-in logic boards for what I paid for the computer & control box: a good investment for what the things together might be worth. All late 1960s TTL logic - no LSI etc. Now for the rest... The label nomenclature: Main unit: Recognition Set AN/ASX-2 CP-1148/ASX-2 Control/indicator control box: C-9435/ASX-2 Jack