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  2. Sound-powered telephone - Wikipedia

    en.wikipedia.org/wiki/Sound-powered_telephone

    A US Navy lookout using an early sound-powered telephone in the Pacific about 1944 A U.S. Navy petty officer uses a sound-powered telephone during a general quarters drill. Sound-powered telephones are widely used on ships.

  3. Talker helmet - Wikipedia

    en.wikipedia.org/wiki/US_Navy_Mk_II_talker_helmet

    The talker helmet or phone-talker helmet is a combat helmet used by the United States Navy and United States Coast Guard.It was originally designed in 1942 as a special-purpose naval helmet for deck crews that could fit additional equipment the contemporary M1 helmet was incompatible with, such as a sound-powered telephone headset.

  4. Field telephone - Wikipedia

    en.wikipedia.org/wiki/Field_telephone

    This phone is fully interoperable with the EE-8, TA-1, TA-43 and TA-312 series of US Field Phones. EE-8 A part of The Marshall Plan (from its enactment, officially the European Recovery Program, ERP) The EE-8* was used in USA from World War II to late seventies, and in Norway from World War II until the TP-6 could replace it.

  5. Underwater acoustic communication - Wikipedia

    en.wikipedia.org/wiki/Underwater_acoustic...

    The underwater telephone, also known as UQC, AN/WQC-2, or Gertrude, was used by the U.S. Navy in 1945 [16] after in Kiel, Germany, in 1935 different realizations at sea were demonstrated. [17] The terms UQC and AN/WQC-2 follow the nomenclature of the Joint Electronics Type Designation System. [18]

  6. 1 Main Circuit - Wikipedia

    en.wikipedia.org/wiki/1_Main_Circuit

    1 Main Circuit (1MC) is the term for the shipboard public address circuits on United States Navy and United States Coast Guard vessels.This provides a means of transmitting general information and orders to all internal ship spaces and topside areas, and is loud enough that all embarked personnel are (normally) able to hear it.

  7. Telephone - Wikipedia

    en.wikipedia.org/wiki/Telephone

    A sound-powered telephone is a telephone which transmits voice communication by wire, powered by the energy of the sound waves of the operator speaking. Principle of operation A moving-coil microphone converts the sound waves into an electrical signal, which is then converted back into sound waves at the receiver's end.

  8. US Navy fires its high-powered laser weapon that could ...

    www.aol.com/news/incredible-photo-shows-us-navy...

    A jaw-dropping new photo shows the US Navy firing off a drone-destroying laser weapon — dubbed Helios — from one of its warships. The undated image, which was published in the US Center for ...

  9. USCGC Point Lomas - Wikipedia

    en.wikipedia.org/wiki/USCGC_Point_Lomas

    Shipyard modifications included installation of new single-sideband radio equipment, additional floodlights, small arms lockers, additional sound-powered phone circuits, and the addition of four M2 machine guns. The original bow mounted machine gun was replaced with a combination over-under .50 caliber machine gun/81mm trigger fired mortar that ...