#radiocommunity

[lalalaugenbrot]

INT. PRÄSIDIUM — FRÜHER MORGEN

Die Tür geht auf und Leo kommt rein. Adam sitzt bereits am Schreibtisch, um ihn herum Aktenstapel und Papierberge. Er ist so vertieft in die Arbeit, dass er nur aufsieht, um Leo kurz, aber freundschaftlich vertraut zuzunicken.

ADAM (abwesend murmelnd)

Morgen.

LEO

Morgen.

Adam hat seinen Blick schon wieder dem Computerbildschirm zugewandt, schaut angestrengt hinein, aber Leos Blick bleibt an Adams Nacken haften. Er stutzt kurz, geht dann zu Adam rüber.

LEO

Hast'n Fax.

Er legt ihm zwei Finger in den Nacken und schiebt sanft den herausstehenden Zettel zurück in Adams T-Shirt. Adam stutzt, macht runde Augen ob der unerwarteten Berührung.

ADAM

(leise)

Oh.

Bevor Leo seine Hand wieder zurückzieht, legt er sie noch einmal kurz auf die Stelle, wohin der Zettel verschwunden ist und tätschelt sie ein bisschen, so als wolle er sicherstellen, dass der Zettel auch wirklich drin bleibt.

ADAM (CONT'D)

(leise)

Danke.

Er wirkt kurz fast ein bisschen verlegen, fängt sich aber dann und scheint sich plötzlich an etwas zu erinnern. Er greift nach einem kleinen Papierstapel neben sich auf dem Schreibtisch, blickt dann mit angehobenen Augenbrauen zu Leo auf.

ADAM

Du auch.

Er hält ihm den Papierstapel hin.

ADAM (CONT'D)

Die KTU hat heute Morgen schon den Spurenbericht geschickt.

[chosenaction]

Discover the World of Icom Radios at ChosenAction.com

Are you a radio enthusiast, a professional in need of reliable communication, or someone who appreciates the art of seamless connectivity? If so, you're in for a treat! Today, we're diving into the world of Icom radios, a brand synonymous with quality, innovation, and reliability in the realm of radio communication. And the best part? You can explore and purchase a wide range of Icom products at our website, ChosenAction.com.

Why Icom?

Icom America has been a leading name in the radio communications industry for years. Known for their commitment to creating products that are both innovative and reliable, Icom has a range of radios that cater to various needs – from amateur radio enthusiasts to professional maritime and aviation communications.

The Icom Range at ChosenAction.com

At ChosenAction.com, we understand the importance of quality communication, and that's why we offer a diverse range of Icom radios. Whether you're looking for handheld VHF radios, mobile units for your vehicle, or sophisticated base stations, we've got you covered.

Handheld Radios

Our collection of Icom handheld radios is perfect for those who need reliable communication on the go. These radios are not only durable but also come with features like GPS, digital noise cancellation, and waterproofing, making them ideal for outdoor adventures or professional use in challenging environments.

Mobile Radios

For those who need a reliable communication setup in their vehicles, our Icom mobile radios are the perfect fit. With features like large displays, intuitive controls, and robust build quality, these radios ensure you stay connected no matter where your journey takes you.

Base Stations

For the amateur radio enthusiast or the professional who needs a central communication hub, our Icom base stations offer the perfect blend of power and performance. These units are designed for clear, consistent communication across various frequencies, ensuring you're always in touch when it matters most.

Why Choose ChosenAction.com for Your Icom Radio?

At ChosenAction.com, we're not just about selling products; we're about providing solutions. We understand the critical role that communication plays in both professional and personal settings. That's why we offer:

Expert Advice: Our team is knowledgeable about every product we sell, ensuring you get the best advice for your specific needs.

Competitive Pricing: We offer competitive pricing on all our Icom products, ensuring you get value for your money.

Quality Customer Service: Our customer service team is here to assist you with any queries or issues, ensuring a smooth shopping experience.

Conclusion

Whether you're a seasoned radio enthusiast or new to the world of radio communication, Icom radios offer the quality and reliability you need. And for the best shopping experience, look no further than ChosenAction.com. Explore our range of Icom products today and step into a world where communication knows no bounds!

[hkrsolutions]

Empowering Teams with the Motorola XPR 7580e Portable Two-Way Radio

In fast-moving industries, where seamless communication is crucial, having the right tools can make all the difference. Whether you’re operating in public safety, event coordination, construction, or large-scale logistics, you need a reliable device that ensures connectivity, clarity, and efficiency. The Motorola XPR 7580e Portable Two-Way Radio is a next-generation communication solution designed to meet the needs of the most demanding work environments.

The Motorola XPR 7580e delivers exceptional digital audio clarity. One of its key strengths is its ability to maintain crystal-clear communication, even in challenging environments. The advanced noise-cancellation features help filter out background noise, making it easier to communicate in loud environments such as construction sites, large-scale events, or manufacturing plants. No matter how chaotic the surroundings, the XPR 7580e ensures that your messages come through clearly.

Another significant benefit of the Motorola XPR 7580e is its extended range and capacity. For businesses that require communication across vast areas—such as logistics companies, event organizers, or campus security—this radio’s advanced technology provides better coverage over longer distances. The device supports Motorola’s Capacity Plus and Linked Capacity Plus systems, which allow teams to stay connected over larger sites without losing signal strength or clarity.

Safety is always a priority in dynamic work environments, and the XPR 7580e is built with this in mind. It features integrated safety functions such as Lone Worker mode and an emergency button that allows users to instantly alert their team if they need help. This makes it an invaluable tool in high-risk industries like construction, mining, and emergency services, where every second counts.

The Motorola XPR 7580e also stands out for its durability. Constructed to meet military standards, it can withstand the toughest conditions—whether it’s heavy rain, dust, extreme temperatures, or drops. This ruggedness ensures that the radio can handle the physical demands of outdoor work environments, ensuring continuous communication even in harsh conditions.

Another key feature of the XPR 7580e is its Bluetooth connectivity. This allows users to communicate hands-free, improving efficiency and safety for those who need to keep their hands free while working. Additionally, integrated GPS tracking enables team leaders to monitor the location of workers in real-time, a crucial function for security and emergency response teams.

For teams working long shifts, the long-lasting battery life of the XPR 7580e is another major advantage. With up to 29 hours of battery life in digital mode, the radio ensures that workers can stay connected throughout their shift without having to worry about recharging.

In industries where communication is critical to success and safety, the Motorola XPR 7580e Portable Two-Way Radio offers a powerful, durable, and reliable solution. Its advanced features, long-range capability, and rugged design make it the ideal choice for teams looking to enhance their communication systems and improve overall efficiency.

[digilogic-system]

Communication Tester from Digilogic Systems

Digilogic’s Communication Tester is a modular, COTS, multifunction, programmable, benchtop Automated Test Equipment that supports a wide range of real-time RF and microwave stimulus, Test and Measurement applications. The system seamlessly supports applications from 250 kHz to 6 GHz with “in-the-box” upgrades that can extend the measurement up to the 26.5 GHz frequency range.

Digilogic's Communication Tester includes a Two-channel High-Speed Oscilloscope, an RF Vector Signal Generator, an RF Vector Signal Analyzer, an RF Power Meter, a Digital Multi-Meter, a Two-channel Audio Analyzer, an Arbitrary Waveform Generator, a Unit Under Test (UUT) Control App and many more.

Overall, Digilogic’s Communication Tester, a modular ATE, is essential for verifying the functionality, quality, and security of RF devices, ensuring reliable communication in military, tactical, and aerospace applications.

For any queries (or) to request a quote, please contact us. Phone: Hyderabad: (+91) 40 4547 4601 Bengaluru: (+91) 80 4975 6034 Website: https://www.digilogicsystems.com/ Email: info@digilogicsystems.com

Stay connected with us on our social media channels for the latest updates!

LinkedIn: https://www.linkedin.com/company/digilogicsystems/ Facebook: https://www.facebook.com/digilogicsystems Instagram: https://www.instagram.com/digilogic_systems/ Twitter: https://x.com/DigilogicSystem Youtube: https://www.youtube.com/@digilogicsystems

"Experience the Future of Communication Testing – Invest in Digilogic’s Communication Tester Today!"

[impact-newswire]

Hytera Communications Corporation Limited (002583.SZ) is a closely-held privately-run company listed on the Shenzhen Stock Exchange.

[shiprasharma2927]

The Ultimate Radio Lingo Glossary: Definitions and Examples

In the vast landscape of communication, radio lingo stands as a unique and essential language. From military operations to emergency services, aviation to maritime, understanding radio lingo is paramount for effective communication. This comprehensive glossary aims to delve deep into the intricacies of radio terminology, providing definitions and examples to aid both novices and seasoned professionals in mastering this vital aspect of communication.

Understanding Radio Lingo: Definitions and Examples

1. Ten Codes

Ten codes, also known as ten signals, are a system of numeric codes used primarily in radio communication to facilitate efficient and concise communication. For instance, 10-4 signifies "acknowledgment" or "message received."

2. Q Codes

Originating from the maritime community, Q codes are a set of three-letter codes used in radio communication to convey common messages or requests. For example, QTH stands for "location," while QSL denotes "confirmation of receipt."

3. Phonetic Alphabet

The phonetic alphabet, also known as the NATO phonetic alphabet or the International Radiotelephony Spelling Alphabet, is a standardized system used to spell out letters and numbers clearly in radio transmission. For instance, Alpha represents the letter "A," while Bravo represents "B."

4. Prowords

Procedural words, or prowords, are specific words or phrases used in radio communication to convey essential information efficiently. Examples include "Roger" for acknowledgment and "Over" to indicate the end of a transmission.

5. Mayday and Pan-Pan Calls

In emergency situations, "Mayday" is the distress call used to signal imminent danger or life-threatening situations, while "Pan-Pan" is used to indicate an urgent situation that falls short of immediate danger but still requires assistance.

6. Slang and Jargon

Beyond formal terminology, radio communication often incorporates slang and jargon specific to particular industries or communities. For example, "Squawk" refers to the transponder code in aviation, while "Bingo Fuel" indicates the minimum fuel required for a safe return.

Practical Applications of Radio Lingo

1. Aviation

In aviation, mastery of radio lingo is crucial for pilots and air traffic controllers to ensure safe and efficient operations. From clearance requests ("Cleared for Takeoff") to position reports ("Established on Final Approach"), precise communication is paramount.

2. Emergency Services

For emergency responders, effective communication can be a matter of life and death. Using radio lingo, firefighters, police officers, and paramedics coordinate their efforts seamlessly, from coordinating resources ("Requesting Backup") to providing situational updates ("In Pursuit of Suspect").

3. Maritime Operations

At sea, radio communication is essential for navigation, safety, and coordination among vessels. From navigation requests ("Permission to Enter Port") to distress calls ("Mayday, Mayday, Mayday"), clear and concise communication is imperative.

Conclusion

Mastering radio lingo is more than just memorizing words and phrases; it's about understanding the nuances of communication in various contexts. Whether you're a novice exploring the world of radio communication or a seasoned professional seeking to hone your skills, this glossary serves as a comprehensive resource to navigate the intricate language of the airwaves.

[michaelgabrill]

Glenn Supports World Radiocommunication Conference

Reliable space communication and navigation systems are critical to every NASA mission. From the Voyager mission exploring beyond our solar system to astronauts aboard the International Space Station, space communications provide the crucial connection to our home planet. Without proper management of radio spectrum allocation and use, NASA’s ability to communicate with spacecraft and operate […] from NASA https://ift.tt/MSedFvJ

[thxnews]

UK Implements SOLAS Amendments for Safer Seas

Keeping Pace with International Maritime Obligations

Ambulatory Reference Provisions Ensure Compliance The UK is committed to aligning its maritime regulations with international standards. To achieve this, domestic maritime secondary legislation includes ambulatory reference provisions. These provisions ensure that when UK law refers to international instruments like conventions, it always points to the most up-to-date versions. This approach allows the UK to stay current with its international maritime obligations.  

SOLAS: Safeguarding Maritime Safety

SOLAS Amendments Enhance Safety The International Convention for the Safety of Life at Sea (SOLAS) plays a pivotal role in ensuring maritime safety. It is continually reviewed and amended by the member states of the International Maritime Organization (IMO) to adapt to new technologies and enhance safety measures. SOLAS follows a four-year cycle for amendments.   Chapter II-1: Ship Construction and Safety for Low-Flashpoint Fuels Safety Enhancements for New Ships Amendments to SOLAS chapter II-1 primarily impact ship construction and safety for vessels using low-flashpoint fuels. Notable changes include higher loading limits for liquefied gas fuel tanks, improved fuel distribution requirements, enhanced explosion relief systems, and upgraded fire protection for fuel storage spaces. Additionally, fuel preparation rooms with potential ignition sources must now have fixed fire-extinguishing systems. These amendments aim to prevent accidents and improve safety.   Other Amendments in Chapter II-1 Apart from fuel-related changes, SOLAS chapter II-1 also includes amendments concerning towing and mooring equipment, vessel stability, subdivision, watertight and weathertight integrity, and stability management. These changes introduce specific requirements for the design of mooring arrangements, equipment, and fittings for new ships, enhancing safety in towing and mooring operations.   Explanatory Notes and Editorial Amendments The IMO has developed explanatory notes for the technical regulations in SOLAS chapter II-1 to improve understanding and compliance. Additionally, editorial amendments have been made to requirements related to the emergency source of electrical power in passenger and cargo ships.  

Chapter II-2: Fire Protection, Detection, and Prevention

Enhancing Fire Safety SOLAS chapter II-2 focuses on fire protection, detection, and prevention. One significant amendment eliminates the need for costly isolators in fire detector units on cargo ships and passenger ship cabin balconies, reducing expenses while maintaining safety. The wording of requirements for inert gas fixed firefighting systems has also been adjusted for clarity and effectiveness.  

Chapter III: Life-Saving Appliances and Arrangements

Improving Lifeboat Regulations SOLAS chapter III addresses life-saving appliances and arrangements on ships. Amendments to the International Life-Saving Appliances Code (LSA Code) have removed the requirement for lifeboats with two independent propulsion systems to carry oars, except for free-fall lifeboats. Additionally, certain lighter ships can now launch and recover reserve rescue boats manually under specific conditions. Furthermore, the requirement for free-fall lifeboats to be launched and towed at speeds not exceeding 5 knots in calm water has been removed.  

Survival Craft Embarkation and Launching Arrangements

Enhanced Safety Measures Amendments to SOLAS chapter III also pertain to survival craft embarkation and launching arrangements, specifically for cargo ships with a gross tonnage of 20,000 and above. These amendments now apply to davit-launched lifeboats, ensuring safety during emergencies.  

Chapter IV: Radiocommunications

Modernizing Maritime Communications Chapter IV of SOLAS deals with radiocommunications and the Global Maritime Distress and Safety System (GMDSS). In an effort to modernize communications, we have removed obsolete requirements and updated guidance. Notably, two-way distress alerting radios now require automatic inclusion of the ship's position. In cases of navigation receiver malfunction, sailors must manually update the ship's position on the radio every four hours.  

Chapter X: High-Speed Craft Codes

Standards for High-Speed Craft Chapter X of SOLAS addresses the High-Speed Craft Codes for seagoing commercial high-speed craft like hovercraft, catamarans, and hydrofoils. We have made changes in the requirements for life-saving radiocommunication appliances, aligning them with SOLAS chapter IV.  

Conclusion

These amendments to SOLAS represent a significant step forward in enhancing the safety of merchant ships and life at sea. By adopting these changes, the UK demonstrates its commitment to complying with international maritime obligations and ensuring the well-being of those at sea.   Sources: THX News, Department for Transport & Guy Opperman MP. Read the full article

[radioarenanet]

Unraveling the Mysteries of DMR: A Comprehensive Guide to Digital Mobile Radio

If you have ever come across the acronym DMR and found yourself scratching your head, wondering what it stands for, you're not alone. DMR, short for Digital Mobile Radio, is a term that has gained popularity in recent years. This article aims to provide you with a clear understanding of what DMR really means and its significance in the realm of communication. So, let's explore the world of DMR and uncover its meaning together.

Get DMR Radio Today!

Overview

Digital Mobile Radio (DMR) is a digital radio communication technology that provides reliable and efficient communication for various industries and sectors. It offers numerous features and benefits over traditional analog communication systems, making it a popular choice for public safety agencies, commercial enterprises, and amateur radio enthusiasts. This article will delve into the definition, history, technical aspects, standards, features, applications, benefits, implementations, and future prospects of DMR.

Definition of DMR

DMR stands for Digital Mobile Radio. It is a digital radio communication technology that enables the transmission of voice, data, and other forms of communication over an encrypted digital network. DMR utilizes digital modulation techniques to convert audio signals into digital format for transmission. The digital signals are then decoded by the receiving device, ensuring clear and reliable communication. It offers various features such as text messaging, voice encryption, GPS and location tracking, and roaming capabilities.

History of DMR

DMR technology was developed in the early 2000s as an open digital radio standard by the European Telecommunications Standards Institute (ETSI). It aimed to provide a more efficient and reliable alternative to traditional analog communication systems. The timeline of DMR milestones includes the release of the first DMR standard in 2005, the formation of the DMR Association in 2008, the introduction of DMR Tier 3 in 2010, and various advancements in the 2010s.

Technical Aspects of DMR

DMR uses a digital modulation technique called frequency-shift keying (FSK) and operates on UHF and VHF frequency bands. Compared to analog communication, DMR provides better voice quality, enhanced coverage, increased channel capacity, and improved resistance to noise and interference. It also enables integration of data services and advanced features.

DMR Standards

The DMR Association develops standards ensuring interoperability and technical specifications adherence. DMR is divided into three tiers based on system complexity and functionality, each catering to different communication needs.

DMR Features

Key features of DMR include text messaging, voice encryption, GPS and location tracking, and roaming capability, enhancing communication efficiency, security, and flexibility.

DMR Applications

DMR is widely used in public safety, commercial and industrial sectors, amateur radio, and transportation, improving communication, operational efficiency, and safety.

Benefits of DMR

DMR offers improved audio quality, enhanced coverage and range, increased channel capacity, and cost-effectiveness, making it a superior choice over traditional analog systems.

DMR Implementations

Numerous manufacturers produce DMR-compliant equipment, and various organizations build and operate DMR networks with a robust infrastructure.

Conclusion

Digital Mobile Radio (DMR) revolutionizes communication across sectors with its reliable, secure, and advanced digital technology. It continues to evolve, promising enhanced connectivity and efficiency for all users.

[phonemantra-blog]

The International Telecommunication Union is preparing to consider regulating lunar communications at the upcoming 2023 World Radiocommunications Conference. This could be a starting point for future work on regulating communications on the Moon. The upcoming international telecommunications conference organized by the International Telecommunication Union (ITU) will address the important issue of regulating lunar communications. Delegates to WRC-23 in 2023 may decide to include the issue on the agenda of the next conference in 2027, ITU Deputy Director Joanne Wilson said. At the WRC-23 conference, scheduled for November-December 2023, countries will discuss changes to the Radio Regulations, the international agreement governing terrestrial and satellite radio communications. [caption id="attachment_75560" align="aligncenter" width="780"] Radiocommunications[/caption] Wilson did not reveal the specific issues that will be considered at this ITU annual meeting but stressed the importance of starting discussions on these issues. In an ITU article published in July, NASA lunar and human spaceflight manager Kathy Sham noted the growing demand for spectrum for activities on the Moon.  The issue of regulating lunar communications will be discussed at the World Radiocommunications “Mission planners, engineers, scientists, architects, and regulators must work together to ensure adequate spectrum management and access for all users.” Sham also mentioned two specific topics that will be considered: protecting future radio astronomy observatories on the far side of the Moon, which is inaccessible to signals from Earth, and the possibility of allocating spectrum for space exploration on the Moon. At the same time, the Federal Communications Commission (FCC) has already received applications for spectrum for lunar communications. FCC Space Bureau Chief Julie Kearney mentioned during a panel discussion the example of Lockheed Martin's application to create a Parsec satellite network to provide communications and navigation services on the Moon.  The FCC has already issued the first lunar communications license to Intuitive Machines, which will allow interaction with their first lunar lander, Nova-C, which will launch as part of the IM-1 mission as early as November this year and will operate on the Moon for about two weeks.

[infoseminar]

Jadwal Training Information Technology (IT) di Jakarta, Bandung, Yogya dan kota lainnya. Pelatihan IT tersedia public training dan in house training. 1. Flask 2. Fraud Management In Telecommunication Business 3. Fundamental Of Radio Communications 4. Holistic Information Security 5. Information Security System 6. Information Technology & Telecomunication 7. Information Technology Infrastructure Library (I T I L) Version 3.1 8. Information Technology Project Management 9. Internetworking Dengan TCP IP 10. Introduction To Data Analysis Using Excel Informasi training: WA: 0851-0197-2488 Jadwal training lengkap: https://www.informasi-seminar.com #flask #fraudmanagement #telecommunicationbusiness #radiocommunications #holisticinformation #informationsecurity #securitysystem #informationtechnology #telecomunication #infrastructurelibrary #projectmanagement #internetworking #dataanalysis #networking #library #informasitraining #informasiseminar #training #pelatihan #jadwaltraining https://www.instagram.com/p/Cq-EF4ipQoV/?igshid=NGJjMDIxMWI=

[chosenaction]

DMR Meaning: Revolutionizing Radio Communication - Explore at ChosenAction.com

In today's fast-paced world, understanding the meaning and implications of DMR (Digital Mobile Radio) is crucial for anyone involved in radio communications. This article delves into the DMR meaning, exploring how it's transforming the way we communicate. For enthusiasts and professionals alike, ChosenAction.com offers a comprehensive range of DMR radios, embodying this technological evolution.

Unpacking DMR Meaning in Modern Communication

What is DMR?

DMR stands for Digital Mobile Radio, an open digital radio standard defined by the European Telecommunications Standards Institute (ETSI). The core of DMR meaning lies in its ability to provide enhanced digital communication over traditional analog radios. This technology is characterized by its efficiency, reliability, and advanced features.

The Technical Essence of DMR Meaning

Understanding DMR meaning involves appreciating its technical advancements. DMR employs TDMA (Time Division Multiple Access), which effectively doubles the capacity of existing channels. This is a significant leap in efficiency, allowing more users to communicate without requiring additional frequencies.

The Advantages of DMR: Expanding the DMR Meaning

Clarity and Quality

One of the primary aspects of DMR meaning is the superior audio clarity it offers. Digital encoding minimizes noise and interference, ensuring clear communication even in challenging environments.

Enhanced Battery Life

Reflecting on DMR meaning, it's notable that DMR radios are more energy-efficient. The TDMA technology allows the radio transmitter to operate only half the time, significantly extending battery life.

Advanced Functionalities

Expanding the DMR meaning, these radios are not just communication tools but multifunctional devices. They come equipped with features like text messaging, GPS tracking, and emergency alerts, adding layers to the DMR meaning in practical scenarios.

DMR Radios at ChosenAction.com: Embodying the DMR Meaning

At ChosenAction.com, we offer a variety of DMR radios that encapsulate the full DMR meaning. Our selection caters to diverse needs, from professional applications to amateur radio enthusiasts.

Why Choose ChosenAction.com for DMR Radios?

Expertise in DMR Meaning: Our team understands the nuances of DMR technology, ensuring you find the perfect match for your needs.

Quality and Variety: We provide a wide range of DMR radios, each embodying the DMR meaning in terms of quality and functionality.

Competitive Pricing: Embracing the DMR meaning also means offering our customers the best value, which is reflected in our pricing.

Conclusion

The DMR meaning goes beyond just being a digital radio standard; it represents a significant shift in radio communication technology. With its enhanced efficiency, clarity, and advanced features, DMR is redefining expectations. Explore our selection at ChosenAction.com and experience the full extent of DMR meaning in your communication needs.

[jiskblr]

ICAO airport codes do not begin with I or J or X or Q, though the Jezero Crater on Mars is assigned the special ICAO code JZRO.[1] Codes beginning with I (Ixx and Ixxx) are often used for navigational aids such as radio beacons, while the Q code is reserved for international radiocommunications and non-geographical special use.

note to self: all airports on Mars in SF should have ICAO codes starting with J

[fredomotophoto]

Sémaphore de Brignogan... par Frédéric Poirier Via Flickr : Voir aussi : flic.kr/p/21i6o7L En français, lors de sa création en 1806 par l'amiral Louis Jacob sous Napoléon Ier, le sémaphore était un poste de défense établi sur la côte, chargé de surveiller les approches maritimes et de signaler par signaux optiques toute activité ennemie (le mot sémaphore vient du grec sema : « signe » et phoros : « qui porte », mais les fanaux antiques étaient nommés φανάρια - phanaria). Dans la deuxième moitié du xixe siècle, les sémaphores sont avec leur capacité télégraphique conçus comme un canal de communication, le seul pour l'époque en tout point de la côte entre les navires et la terre, notamment les armateurs[1]. D'ailleurs, les sémaphores étaient des bureaux télégraphiques à part entière. L'aspect de surveillance complète ce rôle central : « Chaque poste sémaphorique est un œil - et un œil vigilant - ouvert sur la mer pour voir tout ce qui s'y passe[2]. » Aujourd'hui, le sémaphore est un poste de surveillance en bord de côte qui assure des missions diversifiées qui vont de l'assistance à la navigation jusqu'à la surveillance du territoire en passant par la régulation du trafic maritime et de la pêche. Pour exercer ces missions, le personnel du sémaphore dispose d'une « chambre de veille » équipée de larges baies vitrées et de puissantes paires de jumelles (et éventuellement d'un télescope) donnant sur la zone maritime à surveiller, d'un radar et de moyens de radiocommunication. Le sémaphore est installé sur un point culminant de la côte si le relief s'y prête. La chambre de veille est généralement au sommet d'un bâtiment qui parfois s'apparente à une tour (sémaphore du Stiff). Les sémaphores sont échelonnés tout au long des côtes françaises, chacun couvrant un secteur maritime défini. Le réseau des sémaphores est de la responsabilité de la Marine nationale qui les arme en personnels militaires spécialisés : les guetteurs sémaphoriques. Ces militaires peuvent aussi accomplir des missions d'Action de l'état en mer (AEM) au sein d'un CROSS du fait de leurs connaissances particulières du trafic maritime et de leur sens marin dans la coordination de mission du sauvetage en mer. source : wikipédia Sémaphore (signalisation maritime) — Wikipédia fr.m.wikipedia.org/wiki/S%C3%A9maphore_(signalisation_maritime)