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Personal Role Radio
The H4855 Personal Role Radio (PRR) is a small UHF transmitter-receiver issued to the British Armed Forces. It is used by the British Army, Royal Marines, Royal Navy and the Royal Air Force Regiment. The radio has a range of 500 meters, weighs 1.5 kilograms, has 256 different radio channels and a battery life of 20 hours continuous use. It allows users to communicate over short distances. Effective even through thick cover or the walls of buildings, PRR is issued to every member of an eight-strong infantry section. It is manufactured by Marconi-Selenia Communications (then Selenia Communications, Selex ES until 2015, now Leonardo new name of Finmeccanica since 2016). The PRR was originally part of the wider Bowman radio project but was hived off in October 1999 for more rapid implementation, and the first of 45,000 units formally entered service in early 2002. Operating in the 2.4 GHz band, PRR has integrated encryption but does not intercommunicate with ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 tenth of a meter (one decimeter). Radio waves with frequencies above the UHF band fall into the super-high frequency (SHF) or microwave frequency range. Lower frequency signals fall into the VHF (very high frequency) or lower bands. UHF radio waves propagate mainly by line of sight; they are blocked by hills and large buildings although the transmission through building walls is strong enough for indoor reception. They are used for television broadcasting, cell phones, satellite communication including GPS, personal radio services including Wi-Fi and Bluetooth, walkie-talkies, cordless phones, satellite phones, and numerous other applications. The IEEE defines the UHF radar band as frequencies between 300 MHz and 1 GHz. Two other IEEE radar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
British Army
The British Army is the principal land warfare force of the United Kingdom, a part of the British Armed Forces along with the Royal Navy and the Royal Air Force. , the British Army comprises 79,380 regular full-time personnel, 4,090 Gurkhas, and 28,330 volunteer reserve personnel. The modern British Army traces back to 1707, with antecedents in the English Army and Scots Army that were created during the Restoration in 1660. The term ''British Army'' was adopted in 1707 after the Acts of Union between England and Scotland. Members of the British Army swear allegiance to the monarch as their commander-in-chief, but the Bill of Rights of 1689 and Claim of Right Act 1689 require parliamentary consent for the Crown to maintain a peacetime standing army. Therefore, Parliament approves the army by passing an Armed Forces Act at least once every five years. The army is administered by the Ministry of Defence and commanded by the Chief of the General Staff. The Brit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Royal Marine
The Corps of Royal Marines (RM), also known as the Royal Marines Commandos, are the UK's special operations capable commando force, amphibious light infantry and also one of the five fighting arms of the Royal Navy. The Corps of Royal Marines can trace their origins back to the formation of the "Duke of York and Albany's maritime regiment of Foot" on 28 October 1664, and can trace their commando origins to the formation of the 3rd Special Service Brigade, now known as 3 Commando Brigade on 14 February 1942, during the Second World War. As a specialised and adaptable light infantry and commando force, Royal Marine Commandos are trained for rapid deployment worldwide and capable of dealing with a wide range of threats. The Corps of Royal Marines is organised into 3 Commando Brigade and a number of separate units, including 47 Commando (Raiding Group) Royal Marines, and a company-strength commitment to the Special Forces Support Group. The Corps operates in all environments an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Royal Navy
The Royal Navy (RN) is the United Kingdom's naval warfare force. Although warships were used by English and Scottish kings from the early medieval period, the first major maritime engagements were fought in the Hundred Years' War against France. The modern Royal Navy traces its origins to the early 16th century; the oldest of the UK's armed services, it is consequently known as the Senior Service. From the middle decades of the 17th century, and through the 18th century, the Royal Navy vied with the Dutch Navy and later with the French Navy for maritime supremacy. From the mid 18th century, it was the world's most powerful navy until the Second World War. The Royal Navy played a key part in establishing and defending the British Empire, and four Imperial fortress colonies and a string of imperial bases and coaling stations secured the Royal Navy's ability to assert naval superiority globally. Owing to this historical prominence, it is common, even among non-Britons, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Royal Air Force Regiment
The Royal Air Force Regiment (RAF Regiment) is part of the Royal Air Force and functions as a specialist corps. Founded by royal warrant in 1942, the Corps carries out soldiering tasks relating to the delivery of air power. Examples of such tasks are non-combatant evacuation operation (NEO), recovery of downed aircrew (joint personnel recovery – JPR), and in-depth defence of airfields by way of aggressively patrolling and actively seeking out infiltrators in a large area surrounding airfields. In addition the RAF Regiment provides Joint Terminal Attack Controllers (JTACs) to the British Army and Royal Marines, and provides flight size commitment to the Special Forces Support Group. The RAF Regiment Gunners are personnel trained in various disciplines such as infantry tactics, force protection, field craft, sniper, support special forces operations, CBRN (chemical, biological, radiological and nuclear) defence, equipped with advanced vehicles and detection measures. RAF Reg ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Section (military Unit)
A section is a military sub-subunit. It usually consists of between 6 and 20 personnel. NATO and US doctrine define a section as an organization "larger than a squad, but smaller than a platoon." As such, two or more sections usually make up an army platoon or an air force flight. Land Forces NATO Standard NATO symbol for a ''section'' consists of two dots (●●) placed above a framed unit icon. Australian Army At the start of World War I, the Australian Army used a section that consisted of 27 men including the section commander, a sergeant. During World War II, a rifle section comprised ten soldiers with a corporal in command and a lance-corporal as his second-in-command. The corporal used an M1928 Thompson submachine gun, while one of the privates used a Bren gun. The other eight soldiers all used No.1 Mk.3 Lee–Enfield rifles with a bayonet and scabbard. They all carried two or three No.36 Mills bomb grenades. After World War II, and during the Vietnam War, a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ministry Of Defence (United Kingdom)
The Ministry of Defence (MOD or MoD) is the department responsible for implementing the defence policy set by His Majesty's Government, and is the headquarters of the British Armed Forces. The MOD states that its principal objectives are to defend the United Kingdom of Great Britain and Northern Ireland and its interests and to strengthen international peace and stability. The MOD also manages day-to-day running of the armed forces, contingency planning and defence procurement. The expenditure, administration and policy of the MOD are scrutinised by the Defence Select Committee, except for Defence Intelligence which instead falls under the Intelligence and Security Committee of Parliament. History During the 1920s and 1930s, British civil servants and politicians, looking back at the performance of the state during the First World War, concluded that there was a need for greater co-ordination between the three services that made up the armed forces of the United Kingdo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Selex ES
Selex ES was a subsidiary of Finmeccanica S.p.A., active in the electronics and information technology business, based in Italy and the United Kingdom, UK, and formed in January 2013, following Finmeccanica's decision to combine its existing SELEX Elsag and SELEX Sistemi Integrati businesses into SELEX Galileo, the immediate predecessor of Selex ES. From 1 January 2016, the activities of Selex ES merged into Leonardo-Finmeccanica's Electronics, Defence and Security Systems Sector becoming Leonardo S.p.A. Selex ES's activities had been organised in three Divisions within the sector: Airborne & Space Systems, Land and Naval Defence Electronics and Security and Information Systems. History Predecessor companies In July 2003 Finmeccanica and BAE Systems signed a joint venture agreement with the intention of merging their avionics, C4ISTAR, C4ISR and communications businesses to create three joint venture partnerships under the name Eurosystems. The difficulties of integrating the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leonardo S
Leonardo is a masculine given name, the Italian, Spanish, and Portuguese equivalent of the English, German, and Dutch name, Leonard. People Notable people with the name include: * Leonardo da Vinci (1452–1519), Italian Renaissance scientist, inventor, engineer, sculptor, and painter Artists * Leonardo Schulz Cardoso, Brazilian singer * Emival Eterno da Costa (born 1963), Brazilian singer known as Leonardo * Leonardo de Mango (1843–1930), Italian-born Turkish painter * Leonardo DiCaprio (born 1974), American actor * Leonardo Pieraccioni (born 1965), Italian actor and director Athletes * Leonardo Araújo (born 1969), usually known as Leonardo, Brazilian World Cup-winning footballer, and former sporting director of Paris Saint Germain * Leonardo Fioravanti (born 1997), Italian surfer * Leonardo Lourenço Bastos (born 1975), Brazilian footballer * Leonardo Bittencourt, German footballer * Leonardo Bonucci (born 1987), Italian footballer * Leonardo Candi (born 199 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bowman (communications System)
Bowman is the name of the tactical communications system used by the British Armed Forces. The Bowman C4I system consists of a range of HF radio, VHF radio and UHF radio sets designed to provide secure integrated voice, data services to dismounted soldiers, individual vehicles and command HQs up to Division level. Bowman has a number of specific applications installed on the base radio infrastructure known as BISAs. Bowman has been released incrementally as a number of phased capability releases, known as BCIP releases, with BCIP 5.5 being released in the field in 2013. Bowman replaced the Clansman series of radios. As of 2016, the MoD publicised plans to replace Bowman with a system named Morpheus. Procurement history The concept of Bowman dates from a 1989 UK MoD General Staff Requirement (GSR) for a system to replace the ageing Clansman radio system. The GSR was subsequently modified to accommodate post Cold War scenarios. The procurement had a long and chequered history ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spread Spectrum
In telecommunication and radio communication, spread-spectrum techniques are methods by which a signal (e.g., an electrical, electromagnetic, or acoustic signal) generated with a particular bandwidth is deliberately spread in the frequency domain, resulting in a signal with a wider bandwidth. These techniques are used for a variety of reasons, including the establishment of secure communications, increasing resistance to natural interference, noise, and jamming, to prevent detection, to limit power flux density (e.g., in satellite downlinks), and to enable multiple-access communications. Telecommunications Spread spectrum generally makes use of a sequential noise-like signal structure to spread the normally narrowband information signal over a relatively wideband (radio) band of frequencies. The receiver correlates the received signals to retrieve the original information signal. Originally there were two motivations: either to resist enemy efforts to jam the communica ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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