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  2. Field telephone - Wikipedia

    en.wikipedia.org/wiki/Field_telephone

    Field telephones are telephones used for military communications. 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. Some need no battery, being sound-powered telephones . Telephone linesmen ford Lunga River during the Guadalcanal Campaign of World War II.

  3. TA-57 - Wikipedia

    en.wikipedia.org/wiki/TA-57

    The TA-57 can be used for induction calls working with 2-wire lines in an OB (local battery) or a ZB (central battery) operation. It can be used to transmit voice messaging in ranges between 0.3 and 3.4 kHz, with a calling frequency of 15 to 45 Hz. Absolute signal level at output of transmission path with a 600Ω load ranges between -3 and +3 dBu.

  4. Feldtelefon 50 - Wikipedia

    en.wikipedia.org/wiki/Feldtelefon_50

    The field telephone 50 is used by all communication troops of the Swiss Army for both point-to-point connections and landlines . For the first variant, two field telephones are connected with telephone wire. In the second version the phone is connected to lines specially reserved for the army. Such a linked phone is accessible from any telephone.

  5. Military communications - Wikipedia

    en.wikipedia.org/wiki/Military_communications

    Military communications – or "comms" – are activities, equipment, techniques, and tactics used by the military in some of the most hostile areas of the earth and in challenging environments such as battlefields, on land (compare radio in a box ), underwater and also in air. Military comms include command, control and communications and ...

  6. United States Army Signal Corps - Wikipedia

    en.wikipedia.org/wiki/United_States_Army_Signal...

    The United States Army Signal Corps ( USASC) is a branch of the United States Army that creates and manages communications and information systems for the command and control of combined arms forces. It was established in 1860, the brainchild of Major Albert J. Myer, and had an important role in the American Civil War.

  7. Wireless Communications of the German Army in World War II

    en.wikipedia.org/wiki/Wireless_Communications_of...

    The German-army-issued infantry radios in two main series. The "Backpack" or Torn (Tornister) series and the field or Feld series. Torn.Fu Series. Torn.Fu.a: A HF transceiver. It operated in the 3–6.67 MHz frequency range. 2 Watt output AM voice and CW Torn.Fu.b: A HF transceiver. It operated in the 3-5 MHz frequency range. 0.7 Watt output AM ...

  8. Tucker Telephone - Wikipedia

    en.wikipedia.org/wiki/Tucker_telephone

    The Tucker Telephone is a torture device designed using parts from a crank telephone. The electric generator of the telephone is wired in sequence to two dry cell batteries so that the instrument can be used to administer electric shocks to another person. The Tucker Telephone was invented by A. E. Rollins, [1] the resident physician at the ...

  9. Tank phone - Wikipedia

    en.wikipedia.org/wiki/Tank_phone

    Tank phone. A tank phone (also called a tank telephone, grunt phone, tank-infantry phone, TIP, infantry tank telephone, ITT, or infantry phone) is a telephone mounted on the exterior of armoured vehicles to facilitate communication between people outside of the vehicle and those inside, whilst avoiding the tank crew becoming exposed to enemy fire.

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