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Feldtelefon 50 : ウィキペディア英語版 | Feldtelefon 50
The Feldtelephone 50 (50 FTf) is a field telephone used in the Swiss Army. It takes its name from the year 1950, in which it was produced for the first time. ==Parts== The field telephone 50 is packed in a rectangular box-shaped protective casing of green canvas on which a strap is secured from the same material. Inside is the actual phone that is powered by a 1.5-volt battery. A standard handset with earpiece and microphone is used (called Mikrotel). The canvas surrounding the phone has a circular opening for the crank, through the actuation of the ring signal is triggered at the other end. The ring signal is generated by a hand crank. Two wire terminals at the upper end of the apparatus are available for attaching the wire ends of telephone lines.
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Feldtelefon 50」の詳細全文を読む
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