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German Field Telephones of WW I

  • iTD4 (Eiserner Feldfernsprecher) - "Iron" field telephone, model 1915. Wooden cabinet, phonetic and magneto signaling. Designed by Siemens & Halske. Our sample made by Mix & Genest. 

    To be continued after the picture set...

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Fairly heavy "Feldfernsprecher" or "Field Telephones" were in use by German Imperial Army signalers in the 2nd and 3rd line positions or at headquarters. The first such "Feldfernsprecher" was introduced between 1905 and 1910 and is referred to as "Feldfernsprecher alter Art". The next version of this "Old Model of Field Telephone" was the "Iron Field Telephone" of 1915. 

The 1915 model was nearly identical to the "Old Model" but all the brass parts were replaced with grey painted metal (iron). The 1915 model could operate using two separate wire lines to make enemy tapping of the telephone conversations more difficult. Thus the 1915 model of "Eiserner Feldfernsprecher" had three connection outlets on its right side wall (Line 1, Line 2, Earth) while previous and all the further models (FF-16, FF-17) had only two such outlets (Line, Earth).

WHD = 340 х 200 х 155 mm, weight (with handset) 8.2 kg.

As well as its forerunner, the "Eiserner Feldfernsprecher" had no space for batteries, i.e. had to be fed by external battery box. All further models of German Field Telephones (FF-16, FF-17) had space for batteries inside their telephone cabinets.

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