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  2. SCR-536 - Wikipedia

    en.wikipedia.org/wiki/SCR-536

    The SCR-536 weighed 5 pounds (2.3 kg) with batteries and 3.85 lb (1.75 kg) without batteries. The unit operated in AM voice mode between 3.5 and 6.0 MHz frequency range on any one of 50 channels. Plug in crystals and coils were used to control the frequency of the receiver and transmitter. The antenna was a 40 inch telescoping rod that slid ...

  3. Talkie Walkie - Wikipedia

    en.wikipedia.org/wiki/Talkie_Walkie

    Talkie Walkie is the third studio album by French electronic music duo Air, released on 26 January 2004 by Virgin Records. "Alone in Kyoto" was included on the soundtrack to the 2003 film Lost in Translation, and "Run" was used in both the Veronica Mars episode "Nobody Puts Baby in a Corner" and the 2004 French film Lila Says. "Talkie-walkie ...

  4. Continuous Tone-Coded Squelch System - Wikipedia

    en.wikipedia.org/wiki/Continuous_Tone-Coded...

    GMRS/FRS radios offering CTCSS codes typically provide a choice of 38 tones, but the tone number and the tone frequencies used may vary from one manufacturer to another (or even within product lines of one manufacturer) and should not be assumed to be consistent (i.e. "Tone 12" in one set of radios may not be "Tone 12" in another).

  5. Digital mobile radio - Wikipedia

    en.wikipedia.org/wiki/Digital_mobile_radio

    Digital mobile radio. Digital mobile radio ( DMR) is a digital radio standard for voice and data transmission in non-public radio networks. It was created by the European Telecommunications Standards Institute (ETSI), [ 1] and is designed to be low-cost and easy to use. DMR, along with P25 phase II and NXDN are the main competitor technologies ...

  6. Two-way radio - Wikipedia

    en.wikipedia.org/wiki/Two-way_radio

    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, which only receives transmissions. Two-way radios usually use a half-duplex communication channel ...

  7. PTT ID - Wikipedia

    en.wikipedia.org/wiki/PTT_ID

    PTT ID. PTT ID, or Push-To-Talk ID, is a generic term for an automatic number identification (ANI) -like system used in two-way radio systems. It provides identification of the transmitting radio over the air, and is commonly used in selective calling /signaling systems, usually in commercial and public safety radio systems. PTT ID features are ...

  8. Walkie-talked-inspired tech is the secret weapon behind ... - AOL

    www.aol.com/walkie-talked-inspired-tech-secret...

    Walkie-talkie-style systems like PTT are often used in a public-safety capacity, such as with firefighting and emergency services, where relaying information quickly and clearly is essential.

  9. Walkie-talkie - Wikipedia

    en.wikipedia.org/wiki/Walkie-talkie

    Typical walkie-talkies resemble a telephone handset, with a speaker built into one end and a microphone in the other (in some devices the speaker also is used as the microphone) and an antenna mounted on the top of the unit. They are held up to the face to talk. A walkie-talkie is a half-duplex communication device. Multiple walkie-talkies use ...