This manual covers the basic principles and operation of early electromechanical telephone switching systems used in military and civilian communications networks during the post-WWII period
Production Timeline: Early examples bear barrel date codes like "C M" (April 1965) or "K M" (May 1965)
but remain structurally sound
Manufacturer: Mossberg
Navy manufactured and tested its weapons during the war
WWII U.S. Army Signal Corps TS-45A/APM-3 Radar Test Set Sweatshirts This manual covers the basicWWII U. S. Army Signal Corps TS 45A APM 3 Radar Test Set Signal Generator Original WWII era U. S. Army Signal Corps TS 45A APM 3 radar test instrument, marked 115 1 60800 with what appears to be a 1947 contract order marking. This is a very nice radar electronics test set with black wrinkle finish case, hinged lid, carry handle, built in meter, DB attenuator, cavity repeller controls, frequency adjustment, output port, pulse input, fuse holder, power