F-1600

The F-1600 is a military field telephone designed by the army’s research institute ICSITA, made by Electromagnetica in Bucharest [1]. Compared with the licence-built ATI-52, the new field telephones had better transmitter and receiver capsules, more resistant to humidity, heat and cold, a lighter and stronger plastic case, alkaline batteries and an electronic ringer; besides local-battery working they also worked on central battery and CTA and on four wires, which made them compatible with automatic and secure exchanges [1].

It was the first military telephone made in Romania after the Second World War; before the war the Energia and Timișoara (1930–1932) and Standard MAN (1939) field telephones and the well-known Vestitorul had been made in Romania [2]. The new telephones had an electronic ringer, alkaline batteries, a Phenocord case and plastic front panel, and the CMD-1 differential microphone capsule and CRD-1 differential receiver capsule made by Electromagnetica [2].