6 scans + 1 call
40-546: The Icom IC-V82 is a VHF band handheld transceiver designed by Icom for radio amateurs and professionals who require reliable, high-quality communication. Although it is a little outdated, (launched in 2004 and discontinued in 2014), the IC-V82 stands out for its robustness, ease of use and a number of advanced features such as the ability to convert it, by adding a module, into a digital device, which make it ideal for certain applications requiring voice and/or data encryption. It
80-457: A communications channel , such as optical transceivers which transmit and receive light in optical fiber systems, and bus transceivers which transmit and receive digital data in computer data buses . Radio transceivers are widely used in wireless devices . One large use is in two-way radios , which are audio transceivers used for bidirectional person-to-person voice communication. Examples are cell phones , which transmit and receive
120-462: A mobile VPN to handle the multiple connections as a secure, single virtual network . Supporting technologies include: Wireless data communications are used to span a distance beyond the capabilities of typical cabling in point-to-point communication and point-to-multipoint communication , to provide a backup communications link in case of normal network failure, to link portable or temporary workstations, to overcome situations where normal cabling
160-403: A transceiver is an electronic device which is a combination of a radio trans mitter and a re ceiver , hence the name. It can both transmit and receive radio waves using an antenna , for communication purposes. These two related functions are often combined in a single device to reduce manufacturing costs. The term is also used for other devices which can both transmit and receive through
200-452: A wireless router . Aircraft carry automated microwave transceivers called transponders which, when they are triggered by microwaves from an air traffic control radar , transmit a coded signal back to the radar to identify the aircraft. Satellite transponders in communication satellites receive digital telecommunication data from a satellite ground station , and retransmit it to another ground station. The transceiver first appeared in
240-409: A "receiver". On a mobile telephone or other radiotelephone , the entire unit is a transceiver for both audio and radio. A cordless telephone uses an audio and radio transceiver for the handset, and a radio transceiver for the base station . If a speakerphone is included in a wired telephone base or in a cordless base station, the base also becomes an audio transceiver. A modem is similar to
280-475: A Chinese manufacturer suspected of producing counterfeit Icom products; it also noted that this was not the first time it had taken such steps. IIDAS is Icom's implementation of the NXDN protocol for two-way digital radio products intended for commercial private land mobile radios (PLMRs) and low-end public safety communications systems. NXDN is a Common Air Interface (CAI) technical standard for mobile communications. It
320-448: A communication format since they seemed, at the time, to be a short-range phenomenon. Marconi soon developed a system that was transmitting signals way beyond distances anyone could have predicted (due in part to the signals bouncing off the then unknown ionosphere ). Marconi and Karl Ferdinand Braun were awarded the 1909 Nobel Prize for Physics for their contribution to this form of wireless telegraphy. Millimetre wave communication
360-719: A few meters for Bluetooth , or as far as millions of kilometers for deep-space radio communications . It encompasses various types of fixed, mobile, and portable applications, including two-way radios , cellular telephones , personal digital assistants (PDAs), and wireless networking . Other examples of applications of radio wireless technology include GPS units, garage door openers , wireless computer mouse , keyboards and headsets , headphones , radio receivers , satellite television, broadcast television and cordless telephones . Somewhat less common methods of achieving wireless communications involve other electromagnetic phenomena, such as light and magnetic or electric fields, or
400-713: A public resource and are regulated by organizations such as the American Federal Communications Commission , Ofcom in the United Kingdom, the international ITU-R or the European ETSI . Their regulations determine which frequency ranges can be used for what purpose and by whom. In the absence of such control or alternative arrangements such as a privatized electromagnetic spectrum, chaos might result if, for example, airlines did not have specific frequencies to work under and an amateur radio operator
440-468: A social revolution, and a paradigm shift from wired to wireless technology, including the proliferation of commercial wireless technologies such as cell phones , mobile telephony , pagers , wireless computer networks , cellular networks , the wireless Internet , and laptop and handheld computers with wireless connections. The wireless revolution has been driven by advances in radio frequency (RF), microelectronics , and microwave engineering , and
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#1732894712735480-710: A transceiver in that it sends and receives a signal, but a modem uses modulation and demodulation. It modulates the signal being transmitted and demodulates the signal being received. Transceivers are called Medium Attachment Units ( MAUs ) in IEEE 802.3 documents and were widely used in 10BASE2 and 10BASE5 Ethernet networks. Fiber-optic gigabit , 10 Gigabit Ethernet , 40 Gigabit Ethernet , and 100 Gigabit Ethernet utilize GBIC , SFP , SFP+ , QSFP , XFP , XAUI , CXP , and CFP transceiver systems. Because transceivers are capable of broadcasting information over airwaves, they are required to adhere to various regulations. In
520-675: A trunking DMR protocol, digital voice communication and low-speed data in D-STAR format. In June 2022, United Against Nuclear Iran , a U.S. advocacy organization , identified the Icom IC-V82 as being used by Hezbollah , a U.S. designated Foreign Terrorist Organization . It sent a letter to Icom outlining its concerns about the dual-use capability of the transceiver (analog+crypted-digital) and regarding Icom's business ties to Power Group (Icom's representatives in Lebanon) and Faza Gostrar, which claims to be
560-445: Is a portable VHF transceiver with coverage in the two-meter band (144–146 MHz) and a maximum output power of 7 watts. It was manufactured and sold by Icom from 2004 to 2014. One of the most outstanding features of the IC-V82 is the ability to convert it into a digital device using the additional UT-1181 module sold by Icom Inc. . This module allowed the addition of advanced digital communication and encryption capabilities, including
600-406: Is commonly used by police and fire departments. Digital transmissions tend to be clearer and more detailed than their analog counterparts. Many modern wireless devices operate on digital transmissions. In a wired telephone , the handset contains the transmitter (for speaking) and receiver (for listening). Despite being able to transmit and receive data, the whole unit is colloquially referred to as
640-676: Is difficult or financially impractical, or to remotely connect mobile users or networks. Peripheral devices in computing can also be connected wirelessly, as part of a Wi-Fi network or directly via an optical or radio-frequency (RF) peripheral interface. Originally these units used bulky, highly local transceivers to mediate between a computer and a keyboard and mouse; however, more recent generations have used smaller, higher-performance devices. Radio-frequency interfaces, such as Bluetooth or Wireless USB , provide greater ranges of efficient use, usually up to 10 feet, but distance, physical obstacles, competing signals, and even human bodies can all degrade
680-542: Is known as Wireless Powered Communication. In 2015, researchers at the University of Washington demonstrated far-field energy transfer using Wi-Fi signals to power cameras. New wireless technologies, such as mobile body area networks (MBAN), have the capability to monitor blood pressure, heart rate, oxygen level, and body temperature. The MBAN works by sending low-powered wireless signals to receivers that feed into nursing stations or monitoring sites. This technology helps with
720-537: The photophone , a telephone that sent audio over a beam of light. The photophone required sunlight to operate, and a clear line of sight between the transmitter and receiver, which greatly decreased the viability of the photophone in any practical use. It would be several decades before the photophone's principles found their first practical applications in military communications and later in fiber-optic communications . A number of wireless electrical signaling schemes including sending electric currents through water and
760-504: The "Official ICOM representative in Iran". Many of the devices purchased by Hezbollah that later played a role in the 2024 Lebanon electronic device attacks , killing at least 25 people and wounding over 708, were reported as being IC-V82s . Icom opened an investigation into the case on September 19, 2024, while a sales executive at the company's U.S. subsidiary said the devices involved appeared to be counterfeit units. After Icom discontinued
800-441: The 1920s. Before then, receivers and transmitters were manufactured separately and devices that wanted to receive and transmit data required both components. Almost all amateur radio equipment today uses transceivers, but there is an active market for pure radio receivers, which are mainly used by shortwave listening operators. Analog transceivers use frequency modulation to send and receive data. Although this technique limits
840-507: The 1960s. The term wireless was revived in the 1980s and 1990s mainly to distinguish digital devices that communicate without wires, such as the examples listed in the previous paragraph, from those that require wires or cables. This became its primary usage in the 2000s, due to the advent of technologies such as mobile broadband , Wi-Fi , and Bluetooth . Wireless operations permit services, such as mobile and interplanetary communications, that are impossible or impractical to implement with
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#1732894712735880-537: The FCC monitors not only the production but also the use of these devices. Wireless devices Wireless communication (or just wireless , when the context allows) is the transfer of information ( telecommunication ) between two or more points without the use of an electrical conductor , optical fiber or other continuous guided medium for the transfer. The most common wireless technologies use radio waves . With radio waves, intended distances can be short, such as
920-528: The IC-V82 in 2014, counterfeit models emerged in China. In addition, another counterfeit model was sold to Hezbollah, and many of the devices used by this group, like the Gold Apollo AR924 , were exploded on September 18, 2024. Having ceased its production, Icom issued an advisory warning about counterfeit transceivers, including the IC-V82. In October 2018, the company issued a cease-and-desist order against
960-561: The United States, the Federal Communications Commission oversees their use. Transceivers must meet certain standards and capabilities depending on their intended use, and manufacturers must comply with these requirements. However, transceivers can be modified by users to violate FCC regulations. For instance, they might be used to broadcast on a frequency or channel that they should not have access to. For this reason,
1000-445: The antenna until they eventually reach the antenna of a receiver, which induces an electric current in the receiving antenna. This current can be detected and demodulated to recreate the information sent by the transmitter. Free-space optical communication (FSO) is an optical communication technology that uses light propagating in free space to transmit wireless data for telecommunications or computer networking . "Free space" means
1040-477: The complexity of the data that can be broadcast, analog transceivers operate very reliably and are used in many emergency communication systems. They are also cheaper than digital transceivers, which makes them popular with the CB and HAM radio communities. Digital transceivers send and receive binary data over radio waves. This allows more types of data to be broadcast, including video and encrypted communication, which
1080-412: The cost of running cable through the building and under the street would be prohibitive. Another widely used example is consumer IR devices such as remote controls and IrDA ( Infrared Data Association ) networking, which is used as an alternative to WiFi networking to allow laptops, PDAs, printers, and digital cameras to exchange data. Sonic, especially ultrasonic short-range communication involves
1120-530: The ground using electrostatic and electromagnetic induction were investigated for telegraphy in the late 19th century before practical radio systems became available. These included a patented induction system by Thomas Edison allowing a telegraph on a running train to connect with telegraph wires running parallel to the tracks, a William Preece induction telegraph system for sending messages across bodies of water, and several operational and proposed telegraphy and voice earth conduction systems. The Edison system
1160-461: The light beams travel through the open air or outer space. This contrasts with other communication technologies that use light beams traveling through transmission lines such as optical fiber or dielectric "light pipes". The technology is useful where physical connections are impractical due to high costs or other considerations. For example, free space optical links are used in cities between office buildings that are not wired for networking, where
1200-529: The range of the mobile telephone site used to house the equipment required to transmit and receive the radio signals from these instruments. Wireless data communications allow wireless networking between desktop computers , laptops, tablet computers , cell phones, and other related devices. The various available technologies differ in local availability, coverage range, and performance, and in some circumstances, users employ multiple connection types and switch between them using connection manager software or
1240-764: The signal quality. Concerns about the security of wireless keyboards arose at the end of 2007 when it was revealed that Microsoft's implementation of encryption in some of its 27 MHz models were highly insecure. Wireless energy transfer is a process whereby electrical energy is transmitted from a power source to an electrical load that does not have a built-in power source, without the use of interconnecting wires. There are two different fundamental methods for wireless energy transfer. Energy can be transferred using either far-field methods that involve beaming power/lasers, radio or microwave transmissions, or near-field using electromagnetic induction. Wireless energy transfer may be combined with wireless information transmission in what
Icom IC-V82 - Misplaced Pages Continue
1280-547: The transition from analog to digital RF technology, which enabled a substantial increase in voice traffic along with the delivery of digital data such as text messaging, images and streaming media . Wireless communications can be via: Radio and microwave communication carry information by modulating properties of electromagnetic waves transmitted through space. Specifically, the transmitter generates artificial electromagnetic waves by applying time-varying electric currents to its antenna . The waves travel away from
1320-476: The transmission and reception of sound. Electromagnetic induction only allows short-range communication and power transmission. It has been used in biomedical situations such as pacemakers, as well as for short-range RFID tags. Common examples of wireless equipment include: AM and FM radios and other electronic devices make use of the electromagnetic spectrum . The frequencies of the radio spectrum that are available for use for communication are treated as
1360-457: The two sides of a phone conversation using radio waves to a cell tower , cordless phones in which both the phone handset and the base station have transceivers to communicate both sides of the conversation, and land mobile radio systems like walkie-talkies and CB radios . Another large use is in wireless modems in mobile networked computer devices such laptops , pads, and cellphones, which both transmit digital data to and receive data from
1400-531: The use of sound. The term wireless has been used twice in communications history, with slightly different meanings. It was initially used from about 1890 for the first radio transmitting and receiving technology, as in wireless telegraphy , until the new word radio replaced it around 1920. Radio sets in the UK and the English-speaking world that were not portable continued to be referred to as wireless sets into
1440-513: The use of wires. The term is commonly used in the telecommunications industry to refer to telecommunications systems (e.g. radio transmitters and receivers, remote controls, etc.) that use some form of energy (e.g. radio waves and acoustic energy) to transfer information without the use of wires. Information is transferred in this manner over both short and long distances. The first wireless telephone conversation occurred in 1880 when Alexander Graham Bell and Charles Sumner Tainter invented
1480-403: Was first investigated by Jagadish Chandra Bose during 1894–1896, when he reached an extremely high frequency of up to 60 GHz in his experiments. He also introduced the use of semiconductor junctions to detect radio waves, when he patented the radio crystal detector in 1901. The wireless revolution began in the 1990s, with the advent of digital wireless networks leading to
1520-507: Was interfering with a pilot's ability to land an aircraft. Wireless communication spans the spectrum from 9 kHz to 300 GHz. One of the best-known examples of wireless technology is the mobile phone, also known as a cellular phone, with more than 6.6 billion mobile cellular subscriptions worldwide as of the end of 2010. These wireless phones use radio waves from signal-transmission towers to enable their users to make phone calls from many locations worldwide. They can be used within
1560-630: Was jointly developed by Icom and Kenwood Corporation. The "open" D-STAR radio system was developed by Icom based on digital radio protocols developed by the Japan Amateur Radio League and funded by the Ministry of Posts and Telecommunications of Japan. This system is designed to provide advanced voice and data communications over amateur radio using open standards. The IC-V82 has a variety of accessories that improve its functionality and ease of use: Transceiver In radio communication ,
1600-460: Was used by stranded trains during the Great Blizzard of 1888 and earth conductive systems found limited use between trenches during World War I but these systems were never successful economically. In 1894, Guglielmo Marconi began developing a wireless telegraph system using radio waves , which had been known about since proof of their existence in 1888 by Heinrich Hertz , but discounted as
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