Airwave Radio Frequency, 18, and the frequency of each station is Telecommunications a channel for broadcasting radio or television signals. If you do live near an airport, you can find out all the traffic control, weather, Complete list of Airband Frequencies. The wavelengths of radio waves range from The London Fire Brigade (LFB) is the statutory fire and rescue service for London, England. Thanks to our ProConnect system, the cable run is made easy due to it's smaller connector Airwave is a digital trunked radio service for police and other emergency services in England, Scotland and Wales provided by Airwave Solutions Limited under contract to the NPIA. 5 MHz is used for bluetooth. The Airwave Listen to free online radio stations from around the world. Printing the band charts Download and print PDF The UK Civil Aviation Authority (CAA) provides guidance on spectrum and frequency management for aviation, including coordination with Ofcom, the Ministry of Defence, and Eurocontrol. For example, Radio Azadliq, the RFE/RL service for Azerbaijan, along with VOA and the BBC World Service, was forced Frequencies are in the HF band from 4458 kHzthrough 29894 kHz. It is also referred to as a radio wave or electromagnetic wave that travels through the air. Crane (Updated 2/20/2025) This is a quick-reference list of frequencies from countries which may . In Airwaves meaning The term "airwaves" refers to the ocean of radio frequencies used for transmitting signals through the air. Airwave Solutions, now a part of Motorola Solutions, is a prominent provider of data communications infrastructure and services. A typical aircraft VHF radio. Its name Find UK Amateur Radio Frequencies to program your radio scanner, 10m, 6m, 4m, 2m, 70cm The Tecsun PL660 Radio with VHF Air Band is a great radio for communications enthusiasts with the radio providing excellent reception to all of the major frequency bands including AM/ MW, FM, The Tecsun PL660 Radio with VHF Air Band is a great radio for communications enthusiasts with the radio providing excellent reception to all of the major frequency bands including AM/ MW, FM, Airwave Network Connection Certificate The following equipment (hereafter referred to as the “Equipment”) has been tested at the Airwave Network Reference System for connection to the On-premises IT operations management for multi-vendor campus networks Aruba AirWave is a scalable, full featured management solution for multi-vendor wired and wireless networks. 75 Time Signal RADIO- FIXED Radio- ) Satellite (E-S) LOCATION SAT. It often involves a network of Common Aviation Frequencies: Learn about essential communication frequencies for pilots to enhance their radio skills. Airwaves meaning The term "airwaves" refers to the ocean of radio frequencies used for transmitting signals through the air. Use any web browser to search the WTR and find local frequencies to program into your scanner. FUTURE-PROOF YOUR CRITICAL COMMUNICATIONS WITH THE MXP600 TETRA RADIO ESN WILL REPLACE THE CURRENT AIRWAVE TETRA SYSTEM, PROVIDING Australian Radio Frequency Spectrum Plan The radio-frequency spectrum encompasses electromagnetic waves with frequencies ranging from below 3 kilohertz to about 300 gigahertz. A service which must remain Click on the product series to open a PDF that can be viewed online or downloaded. Aircrafts, Extender user manuals, operating guides & specifications History of public airwaves The history of public airwaves dates back to the early 20th century when radio broadcasting began. 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The most comprehensive and Airwave holds various licences which authorise Airwave to provide electronic communications services over its network using radio frequencies that have been allocated for emergency services Helping people be their best in the moments that matter Airwave delivers the world-class mission-critical communication service used by the emergency services, 'Airwave' means a band of radio frequencies used for broadcasting and the medium through which radio waves are transmitted. What is TETRA? TETRA (TErrestrial Trunked RAdio) is a digital mobile radio system for voice and data. Without adequate planning and management, radio signals A radio band is a small frequency band (a contiguous section of the range of the radio spectrum) in which channels are usually used or set aside for the same purpose. Since the word "distance" is relative with regard to miles or kilometers, it is best that we Track spectrum ownership with Airwave Research. It includes information on various bands, such as 1. Search by High Frequency (HF) radio is a radio wave that works at frequencies of 3 to 30 MHz with wavelengths of 100 to 10 m, some of the mountainous areas and islands are still classified as rural During our recent Field Weekend, we discussed with a new visitor how radio signals travel from one station to another. As a Technician licensee, you have free The authoritative document for spectrum allocations for the UK is the UK Frequency Allocation Table (UK FAT), published by Ofcom (www. We have tested over 25+ Shortwave Radios available on the market. The medium of radio waves, especially as used by broadcast radio and Short-Wave. These The CC Skywave 2 can help you discover local culture when traveling to a new city or country. To prevent interference and Airwave Propagation Analysis on Amateur Radio Frequency 10 MHz in Island Areas S D Abdullah, R , S Turuy and A Arief Published under licence by IOP Publishing Ltd Journal of Physics: Airwave - the common radio platform – is one tool to provide this. com is a stocking Dealer for ICOM VHF Airband two way In 2000, the police started using Airwave, a private digital network, so the frequencies and police transmissions aren’t now accessible to the public. Given the different response arrangements and alternative Airwave Airwave provides vital communication services to emergency services in England, Scotland and Wales Shortwave radio received its name because the wavelengths in this band are shorter than 200 m (1,500 kHz) which marked the original upper limit of the It will replace the legacy infrastructure, Airwave, a radio-based terrestrial trunked radio (Tetra) network. Airwave, as the emergency services’ digital radio platform, plays a crucial role in day-to-day operations for the emergency services. Traditionally, the demand for additional spectrum has been met due to the advances in electronics that have permitted the use of higher frequencies It has replaced outdated individually run force analogue radio systems with a national digital radio service. Higher-frequency, shorter-wavelength radio waves are called microwaves. TECHNICIAN CLASS FREQUENCY PRIVILEGES IN HAM RADIO When you’re getting started, remembering where you’re allowed to operate is important. S. Have you ever wondered what all of those different names really mean? Very high frequency (VHF) is the ITU designation [1][2][3] for the range of radio frequency electromagnetic waves (radio waves) from 30 to 300 megahertz Frequency Reference Cards Please note that the Frequency Reference Cards are only available as downloads from this page, and will be updated as required. The Airwave network is Airwaves meaning The term "airwaves" refers to the ocean of radio frequencies used for transmitting signals through the air. Local authority Fire & Rescue services also use Once your aerial is secured to the 1" 14 thread marine mount, you can pass along the cable to your radio. Particulate matter, particularly particles with an aerodynamic diameter of less than 30 μm, will get deposited in Learn the essential air band frequencies for aviation communication, ensuring safe and efficient flight operations with our comprehensive guide. By Warren Drake | December 6th, 2020 | Uncategorized | 0 Comments Introduction Radio waves, used by millions of people world-wide, do not conveniently stop at political or administrative boundaries. It's replacing older analogue private mobile radio PMR446 is a range of frequencies that can be used for radio communications without the need for a licence to use the equipment. In FM radio transmission, the frequency of the wave is modulated to carry this information, as illustrated in Figure 16. It covers all the AM/FM and Shortwave bands Ham Band Plans and Operating Frequencies FCC Spectrum Tables 88 Pages!!! -- DC to Daylight! More Frequencies Than You Can Imagine -- From TVTower. You can search by frequency, language, broadcaster, time and Introduction to Airband Airband, otherwise known as the aircraft band, represents a collection of frequencies within the VHF radio spectrum. It UK Scanner Frequencies UK Scanner Frequencies The frequencies allocated in the UK for police and fire service TETRA use are 380 - 385 MHz (mobile) and 390 - 395 MHz (fixed). The display shows an active frequency of 123. AVOID!) The United States Frequency Allocation Chart This crazy, beautiful chart illustrates the incredible complexity of managing one of our nation’s most Shortwave bands are frequency allocations for use within the shortwave radio spectrum (the upper medium frequency [MF] band and all of the high frequency [HF] band). Fire & Rescue Services are in the process of migrating The electromagnetic spectrum is the range of radiation frequencies that are used to transmit information wirelessly. n. 5G spectrum refers to which parts of the radio spectrum are being used for 5G. Motorola R5 Be efficient. Get expert insights to Ham radio enthusiasts, also known as amateur radio operators, have been using ham radios for communication and emergency purposes for decades. WRC-2015 agreed on a regulatory spectrum provision related to Command and Control Link for Unmanned Aircraft in a form of a resolution. They are Download scientific diagram | Airwave Propagation ResearchSteps from publication: Airwave Propagation Analysis on Amateur Radio Frequency 10 MHz The radio spectrum is the radio frequency (RF) portion of the electromagnetic spectrum. In Great Britain, those communication services are provided through a bespoke integrated network called the Airwave Network. The frequency range used by TETRA in Europe is 380-400 MHz for Define airwave. pl. Import and 7. Propagation of radio waves on HF, VHF and UHF band? How is it possible for short wave signals to cross the entire world? Radio amateur PA9X explanes. Frequencies and allocations Ofcom's Radio waves are defined as electromagnetic waves having the longest wavelength and frequencies in the range of 300 GHz and below. Learn about different types of radios, signal strength, and tips to extend your radio communication distance. Learn more. Although Piet & Benno had worked together since 1997, Rank 1 was the first project which saw them achieve Understanding aviation radio frequencies is an essential skill for every pilot. Radio waves are EM (Electromagnetic)waves that have wavelengths between 1 millimeter and 100 kilometers (or 300 GHz and 3 kHz in frequency). Amateur radio enthusiasts utilize specific frequency bands allocated globally for communication. These waves travel through the air, Radio waves are a type of electromagnetic radiation best-known for their use in communication technologies, such as television, mobile phones and Ever wondered what they are listening to?, well chances are its either the control tower or the display teams own radios. 1 = TEA1 2 = TEA2 (Probably a missing Airwave set. com The Radio Spectrum Airwave works in much the same way as a commercial mobile phone network, using transmitters to provide radio coverage across geographic areas of ‘cells’, with users maintaining contact with the Figure 1 Accessing Radio Statistics from the AP Monitoring Page Running Commands from the Radio Statistics Page Adaptive Radio Management (ARM ARM stands for Adaptive Radio Management. Click for English pronunciations, examples sentences, video. MOTOTRBO R5 connects teams, helping boost efficiency and safety with clear, loud audio that cuts through The end of Airwave and the truth about TETRA and LTE for UK emergency services (Act 1) A blog about the UK Emergency Services Network The frequencies that were then possible to use for radio communication were just called by their "meter range" names: HF, VHF and UHF. is a British mobile communication company that operates the Airwave network, a mobile communications network used by Great Britain's emergency services. Types of radio emissions The International Telecommunication Union uses an internationally agreed system for classifying radio frequency signals. The article provides an overview of how radio waves are characterized by their frequency and wavelength, explaining the inverse relationship between the two International Shortwave Broadcast Bands Frequencies Best Shortwave Bands and Expected Characteristics for Reception The information below will give you the shortwave band characteristics Space Research (E-S) 13. No registration required. 975 MHz band are available in the Public Mobile Radio Service (part 22) for use on board aircraft for communications with land mobile stations which are An airwave is defined as a band of frequencies that are used for radio communication. AT-4200 & AT-5200 Series A Frequency Chart AT-4200 & AT-5200 Series B Frequency Chart AT-4200 TETRA was specifically designed for use by government agencies, emergency services, (police forces, fire departments, ambulance) for public safety networks, Communications over long distances, such as from the U. Works on any PC or Mobile running Windows, Mac, IOS, Android and more. Having some Disclaimer: The Table of Frequency Allocations as published by the Federal Register and codified in the Code of Federal Regulations remains the legal source material. A radio wave has a much longer wavelength than visible light. The 6th digit tells you about the encryption: 0 = Clear (No encryption). It is commonly used in phrases like 'dominating the airwaves,' 'take to the All emergency services in the UK use a version of radio communications based on the terrestrial trunked radio (TETRA) specification. to Europe or Asia, are referred to as "DX" contacts. Understanding the concept of bands If you are new to shortwave radio, then the first thing you need to understand is the concept of radio bands. During the changeover both the old and new main station About Airwave Airwave delivers a world-class mission-critical communication service that is proven to remain operational even in the toughest situations. the radio waves used for broadcasting radio and television programmes, or, more generally, radio. uk). This Online Table of Frequency radio wave, wave from the portion of the electromagnetic spectrum at lower frequencies than microwaves. The most popular is the 144-MHz (2-meter) band. 1. It is the third-largest fire service in the world with nearly 7000 staff of which 5800 are UK Aviation & Airshow Scanner Frequencies which includes UK Military bases, UK airfields, UK Airshows & Display Teams. The Airwave network is Shortwave Radio broadcasts are a great way to get a look at what’s going on around the world, and during times of crisis can play a vital role in your Access to local radio transmitters can be withdrawn by officials. 5 MHz and a standby frequency of 121. This will replace the current Airwave service used by Welcome to the UKAFG Website Whether you’re exploring UK aviation frequencies, researching business radio allocations, or looking for the most up-to-date Airwave Radio is a digital trunked radio service for police and emergency services in England, Scotland, and Wales, replacing outdated analogue systems with Rank 1 is a Dutch trance group founded by Piet Bervoets and Benno de Goeij in 1999. Local authority Fire & Rescue services also use 3. (2) Most spectrum annotated in red or yellow is for An airband radio is a type of radio receiver designed to pick up aviation communications. Different sections of the band are used for radionavigational aids and air traffic control. Frequency Tuning and Channel Selection The Frequency Allocations US Amateur Radio Frequency Allocations Graphical Chart · Regulatory Information Branch For each band, only those license classes with privileges on that UK Nationwide Frequencies Baofeng. Everything you need to know about Airband radios Airband or avionic radios are primarily used by pilots and Air Traffic Control as a means of two way Airwave technology operates on the principle of radio frequency transmission, utilizing dedicated spectrum bands to ensure interference-free communication. From communicating with air traffic control to coordinating with other Download our PDF of CB radio channels and frequencies chart to learn which ones are open to the public and their common uses. The radio "receives" these electromagnetic radio Aruba Wireless RF bands and channels Imagine stepping into a world where invisible waves carry your data through the air, connecting you Airwave holds various licences which authorise Airwave to provide electronic communications services over its network using radio frequencies that have been allocated for emergency services Shortwave radios use high frequencies of the electromagnetic spectrum and allow you to listen to radio stations worldwide. 675-459. The company operating TETRA, Frequency Charts Information about the US Amateur Bands is available on the Frequency Allocations page as well as the frequency bands chart. ofcom. Input the frequency: Manually enter the The Airwave service is provided using spectrum that is allocated for emergency service applications and, as such, is only made available to Find and Map Frequencies in the UK to listen to on your radio scanner, our unique range feature allows to find signals within a user defined distance from your Town or Postcode. I know the emergency services are using the system Air Wave as there main communication's but sometimes DMR radios are also used by the police & View & download of more than 24 airwave PDF user manuals, service manuals, operating guides. We would like to show you a description here but the site won’t allow us. Includes a simple frequency guide and setup tips for the best Airwave Solutions Ltd. Know its types, properties, US Amateur Radio Bands US AMATEUR POWER LIMITS — FCC 97. As of 2010 aeronautical Discover the Frequency Database from SDR-Radio. . com Ltd. Completion of the Airwave rollout to the three core emergency services, alongside the hundreds of other organisations on the Airwave Airwave Solutions Ltd. If you want to hear the civilian aircraft frequencies, you'll want to look A next-level workhorse, the MOTOTRBO R2 marries durability and ergonomics in a portable, two-way radio with superior range and audio. 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 Short-Wave. Info is a simple, handy, graphical way to search for and display Short Wave radio broadcasting frequency schedules. Each type of radio emission is classified according to The Home Office is leading a cross-government programme to deliver the new Emergency Services Network (ESN) critical communications system. From Low Frequency (LF) to Very-High Frequencies Sepura's SCG22 mobile radio has been approved for use by both Airwave and BDBOS for use on the UK and German public safety national The changes to the Emergency Service radio frequencies were phased in between 1987 and 1989. Can You Pick Up UK Police Radio on a Scanner? HPE Support Center Loading Sorry to interrupt CSS Error Refresh You will notice many radios with features such as voice activation and Bluetooth connectivity. Download print or program UK frequencies into your radio scanner or software, scanner export for Uniden SDS100E, SDS200E, UBC3600XLT, UBC125XLT, Local authority NHS Ambulance services use Airwave, replacing their previous wide area 166Mhz and UHF handheld 'incident' radio systems. Radio waves are a type of electromagnetic radiation used for wireless communication, broadcasting, radar systems, and About Single Frequency Maps for AM, FM, and TV The AM Maps by Frequency, FM Maps by Frequency, and TV Maps by Channel tabs on the left open The term To provide the police with an improved secure radio communication system the Police Information Technology Organisation ("PITO") signed a framework contract in 2000 with Radio waves are low-frequency electromagnetic waves used in communication, radar, and astronomy. Commercial Two-way Radios Airwave Communications. 4 Standard RADIO- Radio-Freq. Emergency Services on Digital DMR. From this page you will find airband frequencies to enable you to listen to aircraft, As with GSM and other mobile networks, the radio infrastructure of TETRA is based on a cellular radio propagation technology. 5 MHz. 000 to 136. Definition Airwaves refer to the electromagnetic waves used in the transmission of radio and television broadcasts, as well as other forms of wireless communication. (b) No station may Scanner Frequencies and Radio Frequency Reference for England (EN) ASDE-3 Microwave Link (LDRCL) NOTES: (1) Nearly all civil aviation radio spectrum is shared between the Federal Government and the private sector. UK Fire Service to Keep Tetra Airwave until 2020 but analogue and digital DMR frequencies for firefighters handhelds remain the same. Radio waves in these Historically, when aviation radio was first starting out, most air navigation transmissions took place on the low frequency band from 200 KHz to MOTOTRBO R2 Portable Two-Way Radio Released A next-level workhorse, the MOTOTRBO R2 marries durability and ergonomics in a portable, two-way radio with superior range Introduction The radio spectrum is the range of frequencies used for wireless applications such as broadcast television and radio, cell phones, satellite radio and TV, wireless computer networks, A guide to the new PMR446 license-free radio frequencies following ECC Decision (15)05 and what it means to you Find and Map Frequencies in the UK to listen to on your radio scanner, our unique range feature allows to find signals within a user defined distance from your Town or Postcode. 313 An amateur station must use the minimum transmitter power necessary carry out the desired communications. This UK Frequency Allocation Chart was ESN IS COMING. **** 2400‐2483. If you already own an airplane, you probably already Radio Frequencies Abbreviations such as kHz and GHz are all listed in the Glossary and are also treated under Units of Measure (see the Table of The radio spectrum is divided into a number of radio bands on the basis of frequency, allocated to different uses. Chart users are advised to print the Radio waves are a type of electromagnetic radiation. Most airband radios cover the VHF aircraft band (108-137 AirBand Two Way Radios AirBand VHF Portable, Mobile, and Ground Stations Twowayradiocenter. This resolution Listen to the Red Arrows live in 2025 with these updated airband scanner frequencies. Select the appropriate band: Ensure your radio is capable of receiving VHF airband frequencies. You can search by frequency, language, broadcaster, time and Radio and TV Waves The broad category of radio waves is defined to contain any electromagnetic wave produced by currents in wires and circuits. Learn about Your Motorola Solutions two-way radio is designed, manufactured, and tested to comply with all applicable national and international regulations for human exposure to radio frequency AIRWAVE definition: a channel for broadcasting radio or television signals | Meaning, pronunciation, translations and examples in American English Local authority NHS Ambulance services use Airwave, replacing their previous wide area 166Mhz and UHF handheld 'incident' radio systems. See RESOLUTION COM4/5 (WRC-15). 8GHz FPV channels (analog and DJI/Shark Byte digital systems) so you can choose the best Most long-distance shortwave (high frequency) radio communication – between 3 and 30 MHz – is a result of skywave propagation. A diagram of the electromagnetic spectrum, showing various properties across the range of frequencies and wavelengths The electromagnetic spectrum is the full The UKAFG 2026 Frequency Guide is the latest edition of the UK’s most comprehensive radio frequency reference for civil and military communications Aircraft use Airband as their primary means of voice communication. What is the best radio for listening to aircraft? Consider which frequency bands you want to be able to pick up with your airband radio and (aa) Frequencies in the 454. org. There are benefits of both high and low frequency 5G transmissions. While frequencies above How the Read the FPV Frequency Reference Chart Detailed in the FPV frequency reference chart are the most common bands and channels used 5G spectrum refers to which parts of the radio spectrum are being used for 5G. Click here to find out the Best Shortwave Radios worth buying in 2026. All emergency services in the UK use a version of radio communications based on the terrestrial trunked radio (TETRA) specification. You've probably heard about AM radio and FM radio, VHF and UHF television, citizens band radio, shortwave radio and so on. In England, Wales, and Scotland, this is the Airwave system. The new frequencies More information about how radio spectrum is allocated in the UK, including links to important documents. In Overview Airborne planes can easily be heard from well over 100 miles, so you don't have to live near an airport. AIRWAVES What is Radio Frequency? Radio Frequency (RF) is a portion of the electromagnetic spectrum widely used for wireless communication and signal Typically, Airwave refers to a specific type of radio network technology that leverages spectrum bands to provide resilient and resilient communication infrastructure. 5G NR frequency bands Frequency bands for 5G New Radio (5G NR), which is the air interface or radio access technology of the 5G mobile networks, are separated into two different frequency ranges. That's where you'll find a lot of ham radio operators as well as local public safety calls. airwave synonyms, airwave pronunciation, airwave translation, English dictionary definition of airwave. 975 MHz is used with 25 kHz spacing and AM. Since the early 1920s, amateur radio operators (or "hams"), limited to You can tune a radio to a specific wavelength—or frequency—and listen to your favorite music. In most countries a license to operate airband equipment is required and the operato High Frequency (HF) radio is a radio wave that works at frequencies of 3 to 30 MHz with wavelengths of 100 to 10 m, some of the mountainous areas and islands are still classified as rural High Frequency (HF) radio is a radio wave that works at frequencies of 3 to 30 MHz with wavelengths of 100 to 10 m, some of the mountainous areas and islands Although included in our records, the UHF frequencies did not appear in the printed version until 1983 when the first UHF capable radio was launched. Discover their sources, uses, and effects. It Frequencies and frequency bands which are used for international short wave radio broadcasting services and other interesting short-wave channels. In the United States, the Federal Communications Commission (FCC) was We investigated association of monthly personal radio use and risk of cancer using Cox proportional hazards regression among 48,518 police officers and staff of the Airwave Health The world's largest source of public safety, aircraft, rail, and marine radio live audio streams 2024 Shortwave Frequency Guide provides a comprehensive list of frequencies for shortwave radio enthusiasts. Local authority Fire & Rescue services also use Ultra high frequency (UHF) is the ITU designation [1][2] for radio frequencies in the range between 300 megahertz (MHz) and 3 gigahertz (GHz), also known as the Refer to the chart below to find out what frequencies the device covers. Stream music, news, sports, and talk radio live. Local authority Fire & Rescue services also use Discover how far radios can reach and the factors that affect their range. and LOCATION location 13. In the United States, regulatory responsibility for the radio spectrum is I made a table and diagram to include all the 5. (E-S location 14. It is now fully established and 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". Local authority NHS Ambulance services use Airwave, replacing their previous wide area 166Mhz and UHF handheld 'incident' radio systems. At incident Fireground communications are still carried out on simplex UHF frequencies with some cross-band capabilities to Airwave. Humans use radio waves extensively for Airwave recently commissioned independent testing of telecommunications masts at a single site in Lancashire where there is a TETRA mast alongside an ordinary mobile phone mast, a TV transmitter Radio frequency (RF) is the oscillation rate of an alternating electric current or voltage or of a magnetic, electric or electromagnetic field or mechanical system Air pollution poses a significant threat to human society in terms of both health and climate. The two are exchanged using the button marked with a double-headed The upshot is that “radio” devices—radios, televisions, wireless phones, pagers, wire-less computer networks—can jump frequencies together, using spectrum efficiently without interruption. Amateur radio operators The United Kingdom Frequency Allocation Table (UKFAT) details the uses (referred to as 'allocations') to which various frequency bands are put The BAOFENG K6 Handheld Ham Radio supports the airband frequency range This band includes everything from: Navigation aids like VOR Radio waves, also known as "radio frequency" (RF), are a type of electromagnetic radiation with wavelengths ranging from about 1 mm to over 100 km and frequencies from 1–300 MHz. 0 RADIO Land Mobile Search live shortwave radio schedules by station, language, frequency, and time. Electromagnetic radiation - Radio Waves, Frequency, Wavelength: Radio waves are used for wireless transmission of sound messages, or About Airwave Airwave is responsible for delivering mission-critical communications to the emergency services throughout the UK.
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