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Walkie-talkie

Index Walkie-talkie

A walkie-talkie (more formally known as a handheld transceiver, or HT) is a hand-held, portable, two-way radio transceiver. [1]

108 relations: Airband, Alfred J. Gross, Amateur radio, Amplitude modulation, AN/PRC-148, AN/PRC-6, Antenna (radio), Base station, Beartooth Radio, Bluetooth, ChatNow, Cheat sheet, Citizens band radio, Civil defense, Continuous Tone-Coded Squelch System, Continuous wave, Crystal detector, Crystal oscillator, D-STAR, Daniel E. Noble, Donald Hings, Dry cell, Dual-tone multi-frequency signaling, Duplex (telecommunications), Encryption, EXtreme Radio Service, Family Radio Service, Frequency modulation, Frequency-hopping spread spectrum, Garmin, General Mobile Radio Service, GoTenna, GPS navigation device, Handset, Hasbro, Henryk Magnuski, Hertz, Icom Incorporated, Integrated circuit, Intrinsic safety, ITU Radio Regulations, Joan-Eleanor system, Kenwood Corporation, Land mobile station, Lemelson Foundation, License, Line-of-sight propagation, Loudspeaker, Magnavox, Marine VHF radio, ..., Microphone, Mobile app, Mobile phone, Morse code, MOTO Talk, Motorola, Multi-Use Radio Service, NOAA Weather Radio, North America, Packet radio, Pirate radio, PMR446, PSK31, Public security, Push-to-talk, Radio station, Radio-frequency engineering, Radioteletype, Raytheon, Regenerative circuit, Repeater, Scanner (radio), SCR-300, SCR-536, Selective calling, Serval Project, Signal Corps Radio, Single-sideband modulation, SMS, Squad, Squelch, Superheterodyne receiver, Survival radio, Teck Resources, Telephone, Terminal node controller, Toy, Transceiver, Transistor, Trunked radio system, Two-way radio, UHF CB, Ultra high frequency, Ultralight aviation, United States Army, United States Marine Corps, Vacuum tube, Vehicular communication systems, Voice over IP, Voice-operated switch, Voxer, Waterproofing, Whip antenna, World War II, Yaesu (brand), Zello, 2-meter band, 70-centimeter band. Expand index (58 more) »

Airband

Airband or aircraft band is the name for a group of frequencies in the VHF radio spectrum allocated to radio communication in civil aviation, sometimes also referred to as VHF, or phonetically as "Victor".

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Alfred J. Gross

Alfred J. Gross (February 22, 1918 – December 21, 2000), a.k.a. Irving J. Gross was a pioneer in mobile wireless communication.

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Amateur radio

Amateur radio, also known as ham radio, describes the use of radio frequency spectrum for purposes of non-commercial exchange of messages, wireless experimentation, self-training, private recreation, radiosport, contesting, and emergency communication.

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Amplitude modulation

Amplitude modulation (AM) is a modulation technique used in electronic communication, most commonly for transmitting information via a radio carrier wave.

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AN/PRC-148

The AN/PRC-148 Multiband Inter/Intra Team Radio (MBITR) is the most widely fielded handheld multiband, tactical software-defined radio, in use with NATO forces around the world.

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AN/PRC-6

The AN/PRC-6 is a walkie-talkie used by the U.S. military in the late Korean War era through the Vietnam War.

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Antenna (radio)

In radio, an antenna is the interface between radio waves propagating through space and electric currents moving in metal conductors, used with a transmitter or receiver.

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Base station

Base station (or base radio station) is – according to the International Telecommunication Union's (ITU) Radio Regulations (RR) – a "land station in the land mobile service." The term is used in the context of mobile telephony, wireless computer networking and other wireless communications and in land surveying.

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Beartooth Radio

Beartooth is a highly specialized radio that communicates with similar devices completely independent of cell phone towers or Wi-Fi signals.

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Bluetooth

Bluetooth is a wireless technology standard for exchanging data over short distances (using short-wavelength UHF radio waves in the ISM band from 2.4 to 2.485GHz) from fixed and mobile devices, and building personal area networks (PANs).

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ChatNow

ChatNow is a mobile phone-like walkie-talkie developed by Hasbro's Tiger Electronics division for the preteen market.

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Cheat sheet

A cheat sheet (also cheatsheet) or crib sheet is a concise set of notes used for quick reference.

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Citizens band radio

Citizens band radio (also known as CB radio) is, in many countries, a system of short-distance radio communications between individuals typically on a selection of 40 channels within the 27 MHz (11 m) band.

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Civil defense

Civil defense or civil protection is an effort to protect the citizens of a state (generally non-combatants) from military attacks and natural disasters.

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Continuous Tone-Coded Squelch System

In telecommunications, Continuous Tone-Coded Squelch System or CTCSS is a circuit that is used to reduce the annoyance of listening to other users on a shared two-way radio communications channel.

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Continuous wave

A continuous wave or continuous waveform (CW) is an electromagnetic wave of constant amplitude and frequency, almost always a sine wave, that for mathematical analysis is considered to be of infinite duration.

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Crystal detector

A crystal detector is an obsolete electronic component in some early 20th century radio receivers that used a piece of crystalline mineral as a detector (demodulator) to rectify the alternating current radio signal to extract the audio modulation which produced the sound in the earphones.

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Crystal oscillator

A crystal oscillator is an electronic oscillator circuit that uses the mechanical resonance of a vibrating crystal of piezoelectric material to create an electrical signal with a precise frequency.

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D-STAR

D-STAR (Digital Smart Technologies for Amateur Radio) is a digital voice and data protocol specification for amateur radio.

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Daniel E. Noble

Daniel Earl Noble (October 4, 1901 – February 16, 1980) was an American engineer, and Executive Vice Chairman of the Board of Motorola, who is known for the design and installation of the nation's first statewide two-way FM radio communications system for the Connecticut State Police.

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Donald Hings

Donald Lewes Hings, (November 6, 1907 – February 25, 2004) was a Canadian inventor.

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Dry cell

A dry cell is a type of battery, commonly used for portable electrical devices.

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Dual-tone multi-frequency signaling

Dual-tone multi-frequency signaling (DTMF) is an in-band telecommunication signaling system using the voice-frequency band over telephone lines between telephone equipment and other communications devices and switching centers.

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Duplex (telecommunications)

A duplex communication system is a point-to-point system composed of two or more connected parties or devices that can communicate with one another in both directions.

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Encryption

In cryptography, encryption is the process of encoding a message or information in such a way that only authorized parties can access it and those who are not authorized cannot.

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EXtreme Radio Service

eXtreme Radio Service (eXRS) is a proprietary personal communication technology marketed by TriSquare in the United States.

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Family Radio Service

The Family Radio Service (FRS) is an improved walkie-talkie radio system authorized in the United States since 1996.

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Frequency modulation

In telecommunications and signal processing, frequency modulation (FM) is the encoding of information in a carrier wave by varying the instantaneous frequency of the wave.

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Frequency-hopping spread spectrum

Frequency-hopping spread spectrum (FHSS) is a method of transmitting radio signals by rapidly switching a carrier among many frequency channels, using a pseudorandom sequence known to both transmitter and receiver.

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Garmin

Garmin Ltd. (shortened to Garmin, stylized as GARMIN, and formerly known as ProNav) is an American multinational technology company founded by Gary Burrell and Min Kao in 1989 in Lenexa, Kansas, United States, with headquarters located in Olathe, Kansas.

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General Mobile Radio Service

The General Mobile Radio Service (GMRS) is a land-mobile FM UHF radio service designed for short-distance two-way communication.

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GoTenna

goTenna (goTenna Inc.) is a Brooklyn, New York-based startup that designs and develops technologies for off-grid and decentralized communications.

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GPS navigation device

A GPS navigation device, GPS receiver, or simply GPS is a device that is capable of receiving information from GPS satellites and then to calculate the device's geographical position.

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Handset

A handset is a component of a telephone that a user holds to the ear and mouth to receive audio through the receiver and speak to the remote party via the built-in transmitter.

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Hasbro

Hasbro, Inc. (an abbreviation of its original name, Hassenfeld Brothers) is an American multinational toy and board game company, It is the largest toy maker in the world in terms of stock market value, and third largest with revenues of approximately $5.12 billion.

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Henryk Magnuski

Henryk Władysław Magnuski (1909 Warsaw -1978) was a Polish telecommunications engineer who worked for Motorola in Chicago.

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Hertz

The hertz (symbol: Hz) is the derived unit of frequency in the International System of Units (SI) and is defined as one cycle per second.

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Icom Incorporated

() is an international manufacturer of radio transmitting and receiving equipment, founded in 1954 by Tokuzo Inoue with the company's original name being "Inoue".

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Integrated circuit

An integrated circuit or monolithic integrated circuit (also referred to as an IC, a chip, or a microchip) is a set of electronic circuits on one small flat piece (or "chip") of semiconductor material, normally silicon.

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Intrinsic safety

Intrinsic safety (IS) is a protection technique for safe operation of electrical equipment in hazardous areas by limiting the energy, electrical and thermal, available for ignition.

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ITU Radio Regulations

The ITU Radio Regulations (short: RR) regulates on law of nations scale radiocommunication services and the utilisation of radio frequencies.

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Joan-Eleanor system

The Joan-Eleanor system (or J-E for short) was a very high frequency (VHF) radio system developed during World War II for use by agents working behind enemy lines to relay information and replaced the earlier S-Phone system used by agents.

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Kenwood Corporation

is a Japanese company that designs, develops and markets a range of car audio, Hi-Fi home and personal audio, professional two-way radio communications equipment and amateur radio ("ham") equipment.

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Land mobile station

Land mobile station (or land mobile radio station) is a mobile radio station in the land mobile service that operates within a country or continent.

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Lemelson Foundation

The Lemelson Foundation is a private 501(c)(3) philanthropy founded in 1993 by Jerome H. Lemelson and his wife Dorothy.

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License

A license (American English) or licence (British English) is an official permission or permit to do, use, or own something (as well as the document of that permission or permit).

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Line-of-sight propagation

Line-of-sight propagation is a characteristic of electromagnetic radiation or acoustic wave propagation which means waves travel in a direct path from the source to the receiver.

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Loudspeaker

A loudspeaker (or loud-speaker or speaker) is an electroacoustic transducer; which converts an electrical audio signal into a corresponding sound.

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Magnavox

Magnavox (Latin for "great voice") (stylized as MAGNAVOX) is an American electronics company founded in the United States.

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Marine VHF radio

Marine VHF radio refers to the radio frequency range between 156 and 174 MHz, inclusive.

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Microphone

A microphone, colloquially nicknamed mic or mike, is a transducer that converts sound into an electrical signal.

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Mobile app

A mobile app is a computer program designed to run on a mobile device such as a phone/tablet or watch.

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Mobile phone

A mobile phone, known as a cell phone in North America, is a portable telephone that can make and receive calls over a radio frequency link while the user is moving within a telephone service area.

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Morse code

Morse code is a method of transmitting text information as a series of on-off tones, lights, or clicks that can be directly understood by a skilled listener or observer without special equipment.

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MOTO Talk

MOTO Talk is a feature on some Motorola iDEN cellular phone handsets which allows users to make short-range 'push-to-talk' calls to other such handsets without being on the iDEN network.

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Motorola

Motorola, Inc. was an American multinational telecommunications company founded on September 25, 1928, based in Schaumburg, Illinois.

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Multi-Use Radio Service

In the United States, the Multi-Use Radio Service (MURS) is an unlicensed two-way radio service similar to Citizens Band (CB).

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NOAA Weather Radio

NOAA Weather Radio (NWR; also known as NOAA Weather Radio All Hazards) is an automated 24-hour network of VHF FM weather radio stations in the United States that broadcast weather information directly from a nearby National Weather Service office.

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North America

North America is a continent entirely within the Northern Hemisphere and almost all within the Western Hemisphere; it is also considered by some to be a northern subcontinent of the Americas.

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Packet radio

Packet radio is a form of packet switching technology used to transmit digital data via wireless communications.

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Pirate radio

Pirate radio or a pirate radio station is a radio station that broadcasts without a valid license.

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PMR446

PMR446 (personal mobile radio, 446 MHz) is a part of the UHF radio frequency range that is open without licensing for business and personal use in most countries of the European Union.

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PSK31

PSK31 or "Phase Shift Keying, 31 Baud", also BPSK31 and QPSK31, is a popular computer-sound card-generated radioteletype mode, used primarily by amateur radio operators to conduct real-time keyboard-to-keyboard chat, most often using frequencies in the high frequency amateur radio bands (near-shortwave).

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Public security

Public security is the function of governments which ensures the protection of citizens, persons in their territory, organizations, and institutions against threats to their well-being – and to the prosperity of their communities.

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Push-to-talk

Push-to-talk (PTT), also known as press-to-transmit, is a method of having conversations or talking on half-duplex communication lines, including two-way radio, using a momentary button to switch from voice reception mode to transmit mode.

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Radio station

A radio station is a set of equipment necessary to carry on communication via radio waves.

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Radio-frequency engineering

Radio-frequency engineering, or RF engineering, is a subset of electrical engineering involving the application of transmission line, waveguide, antenna and electromagnetic field principles to the design and application of devices that produce or utilize signals within the range of about 20 kHz up to 300 GHz.

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Radioteletype

Radioteletype (RTTY) is a telecommunications system consisting originally of two or more electromechanical teleprinters in different locations connected by radio rather than a wired link.

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Raytheon

The Raytheon Company is a major U.S. defense contractor and industrial corporation with core manufacturing concentrations in weapons and military and commercial electronics.

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Regenerative circuit

A regenerative circuit is an amplifier circuit that employs positive feedback (also known as regeneration); some of the output of the amplifying device is applied to its input without phase inversion, which reinforces the signal, increasing the amplification.

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Repeater

In telecommunications, a repeater is an electronic device that receives a signal and retransmits it.

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Scanner (radio)

A scanner (also referred to a police scanner, police scanner radio or radio scanner) is a radio receiver that can automatically tune, or scan, two or more discrete frequencies, stopping when it finds a signal on one of them and then continuing to scan other frequencies when the initial transmission ceases.

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SCR-300

The SCR-300 was a portable radio transceiver used by US Signal Corps in World War II.

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SCR-536

The SCR-536 was a hand-held radio transceiver used by the US Army Signal Corps in World War II.

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Selective calling

In a conventional, analog two-way radio system, a standard radio has ''noise squelch'' or ''carrier squelch'', which allows a radio to receive all transmissions.

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Serval Project

The Serval Project (often referred to as Serval) is a project financed by the Shuttleworth Foundation, as well as various other organisations and accepting individual donations.

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Signal Corps Radio

Signal Corps Radios were U.S. Army military communications components that comprised "sets".

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Single-sideband modulation

In radio communications, single-sideband modulation (SSB) or single-sideband suppressed-carrier modulation (SSB-SC) is a type of modulation, used to transmit information, such as an audio signal, by radio waves.

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SMS

SMS (short message service) is a text messaging service component of most telephone, internet, and mobile-device systems.

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Squad

In military terminology, a squad or squadron is a sub-subunit led by a non-commissioned officer that is subordinate to an infantry platoon.

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Squelch

In telecommunications, squelch is a circuit function that acts to suppress the audio (or video) output of a receiver in the absence of a sufficiently strong desired input signal.

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Superheterodyne receiver

A superheterodyne receiver, often shortened to superhet, is a type of radio receiver that uses frequency mixing to convert a received signal to a fixed intermediate frequency (IF) which can be more conveniently processed than the original carrier frequency.

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Survival radio

Survival radios are carried by ships and aircraft to facilitate rescue in an emergency.

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Teck Resources

Teck Resources Limited known as Teck Cominco until late 2008, is a Canadian metals and mining company.

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Telephone

A telephone, or phone, is a telecommunications device that permits two or more users to conduct a conversation when they are too far apart to be heard directly.

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Terminal node controller

A terminal node controller (TNC) is a device used by amateur radio operators to participate in AX.25 packet radio networks.

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Toy

A toy is an item that is used in play, especially one designed for such use.

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Transceiver

A transceiver is a device comprising both a transmitter and a receiver that are combined and share common circuitry or a single housing.

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Transistor

A transistor is a semiconductor device used to amplify or switch electronic signals and electrical power.

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Trunked radio system

A trunked radio system is two-way radio system that uses a control channel to automatically direct radio traffic.

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Two-way radio

A two-way radio is a radio that can do both transmit and receive a signal (a transceiver), unlike a broadcast receiver which only receives content.

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UHF CB

UHF CB is a class-licensed citizen's band radio service authorised by the governments of Australia, New Zealand, Vanuatu, and Malaysia in the UHF 477 MHz band.

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Ultra high frequency

Ultra high frequency (UHF) is the ITU designation for radio frequencies in the range between 300 megahertz (MHz) and 3 gigahertz (GHz), also known as the decimetre band as the wavelengths range from one meter to one decimeter.

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Ultralight aviation

Ultralight aviation (called microlight aviation in some countries) is the flying of lightweight, 1- or 2-seat fixed-wing aircraft.

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United States Army

The United States Army (USA) is the land warfare service branch of the United States Armed Forces.

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United States Marine Corps

The United States Marine Corps (USMC), also referred to as the United States Marines, is a branch of the United States Armed Forces responsible for conducting amphibious operations with the United States Navy.

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Vacuum tube

In electronics, a vacuum tube, an electron tube, or just a tube (North America), or valve (Britain and some other regions) is a device that controls electric current between electrodes in an evacuated container.

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Vehicular communication systems

Vehicular communication systems are networks in which vehicles and roadside units are the communicating nodes, providing each other with information, such as safety warnings and traffic information.

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Voice over IP

Voice over Internet Protocol (also voice over IP, VoIP or IP telephony) is a methodology and group of technologies for the delivery of voice communications and multimedia sessions over Internet Protocol (IP) networks, such as the Internet.

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Voice-operated switch

In telecommunications, a voice operated switch, also known as VOX or voice-operated exchange, is a switch that operates when sound over a certain threshold is detected.

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Voxer

Voxer is a San Francisco based mobile app development company best known for its free Voxer Walkie Talkie app for smartphones.

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Waterproofing

Waterproofing is the process of making an object or structure waterproof or water-resistant so that it remains relatively unaffected by water or resisting the ingress of water under specified conditions.

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Whip antenna

A whip antenna is an antenna consisting of a straight flexible wire or rod.

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World War II

World War II (often abbreviated to WWII or WW2), also known as the Second World War, was a global war that lasted from 1939 to 1945, although conflicts reflecting the ideological clash between what would become the Allied and Axis blocs began earlier.

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Yaesu (brand)

Yaesu is a Japanese brand of commercial and amateur radio equipment.

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Zello

Zello is an application startup located in Austin, Texas, behind the creation of Zello applications.

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2-meter band

The 2-meter amateur radio band is a portion of the VHF radio spectrum, comprising frequencies stretching from 144 MHz to 148 MHz in International Telecommunication Union region (ITU) Regions 2 (North and South America plus Hawaii) and 3 (Asia and Oceania) and from 144 MHz to 146 MHz in ITU Region 1 (Europe, Africa, and Russia).

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70-centimeter band

The 70-centimeter or 440 MHz band is a portion of the UHF radio spectrum internationally allocated to amateur radio and amateur satellite use.

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References

[1] https://en.wikipedia.org/wiki/Walkie-talkie

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