Field telephone
From Wikipedia, the free encyclopedia
Field telephones are mobile telephones intended for military use, designed to withstand wartime conditions. They can draw power from their own battery, from a telephone exchange (via a central battery known as CB), or from an external power source.
Field telephones were first used in the First World War to direct troops. They replaced flag signals and the telegraph as an efficient means of communication. The first field telephones had a wind-up generator, used to power the telephone's ringer & batteries to send the call, and call the manually-operated telephone central. This technology was used from the 1910s to the 1960s.
[edit] Field telephones used by the Finnish Defence Forces
- TA-57
- P78
- P90
- ET-10
[edit] Field telephones used by the United States Army
- EE-8
- TA-43
- TA-312
