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  2. Two-way radio - Wikipedia

    en.wikipedia.org/wiki/Two-way_radio

    Naval air traffic controller communicates with aircraft over a two-way radio headset A variety of portable handheld two-way radios for private use. A two-way radio is a radio transceiver (a radio that can both transmit and receive radio waves), which is used for bidirectional person-to-person voice communication with other users with similar radios, [1] in contrast to a broadcast receiver ...

  3. Walkie-talkie - Wikipedia

    en.wikipedia.org/wiki/Walkie-talkie

    A walkie-talkie, more formally known as a handheld transceiver, HT, or handheld radio, is a hand-held, portable, two-way radio transceiver. Its development during the Second World War has been variously credited to Donald Hings, radio engineer Alfred J. Gross, Henryk Magnuski and engineering teams at Motorola. First used for infantry, similar ...

  4. List of Motorola products - Wikipedia

    en.wikipedia.org/wiki/List_of_Motorola_products

    iDEN/CDMA dual-mode a.k.a. Cobra ... HT820 Bluetooth stereo wireless headset; ... Motorola Portable Two Way Radios; Radio Selection Guide;

  5. AN/PRC-77 Portable Transceiver - Wikipedia

    en.wikipedia.org/wiki/AN/PRC-77_Portable_Transceiver

    The AN/PRC-77 entered service in 1968 during the Vietnam War as an upgrade to the earlier AN/PRC-25.It differs from its predecessor mainly in that the PRC-77's final power amplifier stage is made with a transistor, eliminating the only vacuum tube in the PRC-25, as well as the DC-DC voltage converter used to create the high plate voltage for the tube from the 15 V battery.

  6. Throat microphone - Wikipedia

    en.wikipedia.org/wiki/Throat_microphone

    Oxygen mask KM-34 for MiG pilots with a throat microphone Throat microphone LA-5 (Soviet Union early 1980s), same model as above A general-purpose throat mic used for two-way radio communications A throat microphone , also called a laryngophone , is a type of contact microphone that absorbs vibrations directly from the wearer's throat by way of ...

  7. AN/PRC-148 - Wikipedia

    en.wikipedia.org/wiki/AN/PRC-148

    The AN/PRC-6809 MBITR Clear is a variant of the MBITR, made available without encryption. While the PRC-148 includes US Type 1 capabilities in all versions, the PRC-6809 uses Level III Data Encryption Standard, making it available to police, firefighters, and militaries unable to obtain International Traffic in Arms Regulations (ITAR) approval.