Journal articles: 'Radio equipment'

1

DeMott, Kathryn. "Radio ID Devices Zap Equipment." Caring for the Ages 9, no. 7 (2008): 4. http://dx.doi.org/10.1016/s1526-4114(08)60177-8.

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Xue, Jun, Jian Hua Zou, Yong Liang Zhang, and Xin Bing Fang. "Design and Implementation of Radio Spreading-Sequences Beacon Based on Quadrature Frequency-Conversion." Advanced Materials Research 605-607 (December 2012): 1984–88. http://dx.doi.org/10.4028/www.scientific.net/amr.605-607.1984.

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Radio beacon is required for dynamic self-test of vessel carrier's radio measuring and controlling equipment. Also it is required to process angle-adjusting of the equipment. The paper proposes a kind of method to design beacon based on quadrature frequency-conversion technology. The parameters of the beacon can been set flexibly through MCU control. Sidebands and local oscillator’s leakage are suppressed in circuit implementation. The beacon works reliable and its performance meets requirements. Real application shows fair result. The beacon supports technically naval adjustment of vessel carrier's radio measuring and controlling equipments.

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Gordyaskina, Tatyana V., and Lyudmila S. Grosheva. "THE SHIP'S RECEIVING AND TRANSMITTING EQUIPMENT ELEMENTS RESEARCH BASED ON THE TMS320C5510 SIGNAL PROCESSOR." Russian Journal of Water Transport, no. 63 (June 1, 2020): 40–47. http://dx.doi.org/10.37890/jwt.vi63.74.

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Ship's radio equipment, produced on a modern digital basis, is used as equipment for the global Maritime disaster communication system( GMDSS), vehicle traffic control systems and dangerous proximity warnings, radar and radio navigation systems. The article presents the synthesis and research method concerning the principles of functioning the professional activity objects in relation to specialists in transport radio equipment technical operation related to the example of radio receiving and transmitting devices (GMDSS )equipment block based on the digital signal processor TMS320C5510. In the mastering the technique process, students of the «Transport radio equipment technical operation», specialty master professional competencies, get theoretical and practical skills of synthesis, technical diagnostics and ship radio equipment maintenance .

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Popa, Robert. "Electromagnetic Susceptibility Measurement of Military Radio Electronic Equipment." Journal of Military Technology 3, no. 1 (2020): 17–22. http://dx.doi.org/10.32754/jmt.2020.1.03.

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Whereas the EMC of a piece of equipment represents a requirement which must be fulfilled according to the applicable EMC standards, in order not to disturb the functionality of other devices, the EMS of that equipment has the same importance, since its prime purpose is to perform and to achieve the scope for which it was designated. Thus, the measurement of the equipment’s EMS became an important aspect to be considered by any manufacturer, because, on the opposite side, any buyer will be very focused to check, before buying, the compliance of equipment with the Standards provisions on EMS matter. This article provides a synthetic updated overview of the main aspects related with the EMS test conditions, test methods and results interpretation, from the Military Standards prospective.

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Tiridatov, Sergey Aleksandrovich, Vasiliy Aleksandrovich Mokhov, and Anastasiya Sergeyevna Kobylnichenko. "ABOUT EQUIPMENT OF RADIO CONTROL MODELS." Economy. Business. Computer science, no. 3 (January 1, 2016): 1–7. http://dx.doi.org/10.19075/2500-2074-2016-3-1-7.

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Green, L. B. "Electromagnetic compatibility of radio telecommunications equipment." IEE Proceedings - Science, Measurement and Technology 141, no. 4 (1994): 244. http://dx.doi.org/10.1049/ip-smt:19941143.

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Vasylieva, Olena, Yurii Pavlenko, and Valeriy Ogar. "Calibration complex of radio measuring equipment." Ukrainian Metrological Journal, no. 2 (June 25, 2024): 10–17. http://dx.doi.org/10.24027/2306-7039.2.2024.307137.

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Modern trends in the development of radio measuring equipment require improvement of the principles of metrological support of these devices and corresponding reference base. The new approach is based on the digitalisation of equipment, programming of measurement procedures, and the transition from single measurement standards to measurement complexes. The paper describes the complex developed at the NSC “Institute of Metrology” and designed for verification and calibration of a wide range of radio measuring equipment, where all these approaches are realised, presents methodological, software and hardware features of its construction, as well as the advantages and possibilities of this approach in metrological practice. On the example of the method of “Bessel Function Zeros”, which was somewhat forgotten due to the cumbersome nature of its implementation by analogue methods and equipment, it is shown that with the new approach this method gets a “second birth”, moreover, at a higher metrological level. It is shown that the use of direct digital synthesis oscillators can significantly improve the “electronic counting frequency meter” method, in particular, prevent the phenomenon of “frequency capture”, which limited the capabilities of the method and introduced additional measurement uncertainty. Moreover, the additional properties of the complex associated with the use of the R&S FSL spectrum analyser with the K7 analogue signal demodulator option are explained in more detail. A list of other methods realised in the complex is given, among which the “combination frequencies” method, deserves a special attention, providing the highest resolution in measuring nonlinear distortions of both quasi-harmonic and modulated signals. It is shown that the complex is a flexible apparatus, the work programme of which can be adjusted and supplemented. Information on the structure of the complex, hardware solution of a number of nodes, programming language, etc. is given.

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Solomentse, Oleksandr, Tetyana Herasymenko, Olena Kozhokhina, Yuliia Petrova, and Maksym Zaliskyi. "EFFICIENCY OF OPERATIONAL DATA PROCESSING FOR RADIO ELECTRONIC EQUIPMENT." Aviation 23, no. 3 (2020): 71–77. http://dx.doi.org/10.3846/aviation.2019.11849.

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The paper deals with the statistical data processing algorithms in operation system of radio electronic equipment. The main purpose is analysis of data processing algorithm efficiency according to the analytical calculations and simulation results. During radio electronic equipment operation failures are possible. These failures affect on the equipment’s technical condition that can deteriorate. In case of condition-based maintenance, it is necessary to detect the time moment of deterioration beginning. Therefore, in this paper the deterioration detection algorithm was developed according to Neyman-Pearson criterion with a fixed sample size. The initial data are times between failures of radio electronic equipment, and these data can be identified by the exponential probability density function. The step-function model was chosen for failure rate change description. To estimate efficiency the operating characteristic was calculated. The simulation based on Monte-Carlo method confirmed the correctness of theoretical calculations.

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Ivanyushkin, Roman Yu, and Albert Waal. "THE COMPUTER MODELING OF CLASS -D AND -DE SWITCHING-MODE POWER AMPLIFIERS FOR VHF DIGITAL RADIO BROADCAST EQUIPMENT." SYNCHROINFO JOURNAL 9, no. 4 (2023): 21–25. http://dx.doi.org/10.36724/2664-066x-2023-9-4-21-25.

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Currently the transition to digital VHF radio broadcasting is being discussed more and more in different countries, which requires the design of new radio broadcast equipment devices. In classical method of amplifying the power of complex radio signals with a variable envelope, the new broadcast equipment will lose significantly to the existing broadcast equipment with frequency-modulated signal in many energy parameters. The most the promising ways to build high-efficiency broadcast equipment devices of complex radio signals with amplitude-phase modulation and high peak-factor are synthetic methods of linear amplification of radio frequency power (for example, basing on the scheme of L. Kahn) by using high-efficiency switching-mode circuits of powerful amplification. The present state of development of powerful radio-frequency transistors allows to assume that in the near future in the VHF-band switching-mode power amplifiers of Class -D and -F, which will be suitable for building digital radio broadcast equipment with the polar architecture of L. Kahn, will be everywhere used. These switching-mode amplifiers, in contrast to higher-frequency Class-E circuits, supply more steady characteristics in the frequency band. But when developing such broadcast equipment, it is also reasonable to deal with modified switching-mode power amplifiers of the Class -DE and -FE. The article deals with the questions of the computer modeling of switching- mode power amplifiers of Class -D and -DE in relation to the design of VHF radio broadcast equipment.

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Bogucki, Jan, and Ewa Wielowieyska. "Reliability of line-of-sight radio-relay systems." Journal of Telecommunications and Information Technology, no. 1 (March 30, 2006): 87–92. http://dx.doi.org/10.26636/jtit.2006.1.352.

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The modern radio transmission systems are specifically designed for catching principally two main objectives: on one side to provide a radio solution for long distance where large configurations are required to fulfill the high capacity transmissions needs, on the other side to guarantee link quality as high as possible. The availability of a radio-relay system is dependent upon many factors and particularly upon: the reliability of equipment and propagation conditions. The article describes the wave propagation and equipment that determine the performance of a radio-relay path. National Institute of Telecommunications (NIT) carried out research on propagation phenomena on terrestrial path and exemplary results are described herewith. The availability of radio equipment based on the mean time between failures for equipment modules is presented too.

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11

Wang, Zhe, Ye Shuang Tan, and Xiao Lei Huo. "Research on Radio Maintenance Simulation Training." Applied Mechanics and Materials 347-350 (August 2013): 3691–95. http://dx.doi.org/10.4028/www.scientific.net/amm.347-350.3691.

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Equipment maintenance training is one of the most important tasks in peacetime and wartime equipment support. Traditional maintenance training is mainly carried out on real equipment. It is subject to many limited conditions. Virtual maintenance training can be an effective solution to the shortcomings of the actual equipment training, but it also needs to be improved in the aspect of offering intuitive image operation interface for trainees. Maintenance simulation training opens up new ideas for equipment maintenance training. The article studies the advantages and disadvantages of the three maintenance training methods. Specific application of simulation maintenance training in radio maintenance training is given. The article has a certain reference value for maintenance training.

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Zhang, Xianhao, Zhongmei Luo, and Guo Kang. "Analysis and Research on the Interference of Civil Aviation Radio Navigation Equipment." Journal of Physics: Conference Series 2209, no. 1 (2022): 012011. http://dx.doi.org/10.1088/1742-6596/2209/1/012011.

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Abstract Aiming at the problem that civil aviation radio navigation equipment is susceptible to interference more and more frequently, through the study of aviation radio interference theory, the categories of civil aviation radio interference are classified, and then the source and harm of radio interference are analyzed, and specific measures to solve the interference problem are proposed. This is of great help to solve the difficult problem of radio interference signals, and is conducive to reducing the probability of civil aviation radio navigation equipment being interfered, thereby ensuring aviation flight safety.

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13

Korchagin, D. S. "THE RESISTANCE TO FUNGUS OF RADIO EQUIPMENT." RADIO COMMUNICATION TECHNOLOGY, no. 39 (2018): 61–71. http://dx.doi.org/10.33286/2075-8693-2018-39-61-71.

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14

Tada, Junji, Kiyoyuki Koike, Yoshinori Seki, Keicho Arima, and Toshikazu Danbayashi. "Development of radio equipment for restaurant systems." Journal of the Institute of Television Engineers of Japan 43, no. 4 (1989): 414–16. http://dx.doi.org/10.3169/itej1978.43.414.

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15

Moy, Christophe, Linda Doyle, and Yukitoshi Sanada. "Foreword—cognitive radio: from equipment to networks." annals of telecommunications - annales des télécommunications 64, no. 7-8 (2009): 415–17. http://dx.doi.org/10.1007/s12243-009-0125-y.

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Mueck, Markus Dominik, Biljana Badic, Heungseop Ahn, Paul Bender, Seungwon Choi, and Vladimir Ivanov. "Market Access for Radio Equipment in Europe Enabled by the Radio Equipment Directive: Status, Next Steps and Implications." IEEE Communications Magazine 57, no. 12 (2019): 20–24. http://dx.doi.org/10.1109/mcom.001.1900334.

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17

Nedobegkin, M. I., V. A. Sinitsyn, E. A. Sinitsyn, and S. Yu Strakhov. "FEATURES OF SOLVING PROBLEM OF SHARING RADIO FREQUENCY RANGE ON-BOARD EQUIPMENT OF RADIO SYSTEMS OF SHORT-RANGE NAVIGATION AND LTE NETWORKS." Issues of radio electronics, no. 6 (June 21, 2019): 46–52. http://dx.doi.org/10.21778/2218-5453-2019-6-46-52.

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It is shown that the joint use of radio frequency range onboard equipment radio systems near navigation (RSBN) and LTE networks requires both organizational and technical measures, and the implementation of measures of conversion of the radio frequency spectrum on a local‑territorial principle. Attention is drawn to the need for the improvement of on‑Board equipment of the RSBN with modes of short‑range and inter‑flight navigation, taking into account the needs of users of the national frequency resource. It is noted that the cardinal solution to the problem of conversion of the considered frequency band is the transfer of on‑Board equipment of the RSBN from the domestic frequency range occupied by the LTE communication network to the international frequency range of the air radio navigation service 960–1215 MHz. The solution of the problem of joint use of the frequency band 791–821 MHz by the onboard equipment of radio engineering systems of short‑range navigation and radio electronic means of LTE networks for the transition period until the conversion is completed is possible by reducing the frequency resource (channels) for the on‑Board equipment of RSBN with the modes of short‑range and inter‑flight navigation or redistribution of the frequency resource initially nominated for the competition for radio electronic means of the LTE‑800 standard.

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Tsapko, S. G., and I. V. Tsapko. "Criteria for Evaluating the Processes of Designing Onboard Radio-Electronic Equipment of Space Vehicles." Programmnaya Ingeneria 15, no. 1 (2024): 12–25. http://dx.doi.org/10.17587/prin.15.12-25.

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The authors of the article conducted an analysis of approaches, methods, and criteria for evaluating the design processes of onboard radio-electronic equipment. In particular, the key criteria influencing the enhancement of efficiency in designing onboard radio-electronic equipment processes were examined, along with ways to improve them when addressing business process reengineering tasks in design organizations. Based on the analysis conducted and the authors experience in the field of engineering business processes for designing onboard radio-electronic equipment for spacecraft, fourteen groups of quality assessment criteria for business processes were developed. The developed criteria were tested in evaluating the performance of reengineering business processes in the instrumentation department of the Information Satellite Systems named after M. F. Reshetnev Joint-Stock Company. However, due to the vast amount of material obtained during the research and design work conducted, the authors of the article have provided only examples of the development and coordination of the technical specification for the design of onboard radio-electronic equipment for spacecraft as indicative results. The results of the testing showed the effectiveness of the developed criteria for evaluating the design processes of onboard radio-electronic equipment for spacecraft, substantiating the potential for innovation implementation.

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Vasilev, Dragomir. "PROTECTION AGAINST THE ELECTROMAGNETIC STRENGTH OF THE RADIO WAVES IN COMMUNICATION RADIO NETWORKS." Journal Scientific and Applied Research 22, no. 1 (2023): 50–55. http://dx.doi.org/10.46687/jsar.v22i1.340.

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In this paper presents protection methods against Electromagnetic straight of the radio waves in communication radio networks. Examples of personal protective equipment for monitoring EMF when working near transmitting devices. Personal Monitor. When an electric current flows through the human body, cells and tissues prevent the movement of charged particles. The value of the resistance depends on the type and condition of the cells, the value and frequency of the applied voltage and the duration.

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Rustamaji, Rustamaji, and Kania Sawitri. "RADIO KOMUNITAS SEBAGAI TEKNOLOGI TEPAT GUNA UNTUK KOMUNIKASI MASYARAKAT." Jurnal Borneo Saintek 6, no. 1 (2023): 7–13. http://dx.doi.org/10.35334/borneo_saintek.v6i1.4197.

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At this time there are various types of equipment for electronic communication or often called telecommunications equipment that can be used by the public. Difficulties for students who do not have or master the use of the latest telecommunications equipment, and live in areas that are not covered by telecommunications networks. Of course there must be an appropriate alternative technology that can be used. Where one of them uses broadcast technology through "community radio". Community radio is a radio broadcasting station that is owned, managed, earmarked, initiated, and established by a community. Community radio to disseminate or broadcast information in the form of sound (audio) such as talk, news, or music, through radio waves at a certain frequency. Community radio is useful for distance learning activities, both in situations where there is a pandemic that limits face-to-face activities, or situations without a pandemic, such as overcoming technological limitations in areas that are not covered by cable or cellular telecommunications networks for internet applications.

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GRYCHKIN, S. E. "ENERGY EFFICIENCY INCREASING OF RADIO TRANSMITTERS." T-Comm 17, no. 5 (2023): 25–31. http://dx.doi.org/10.36724/2072-8735-2023-17-5-25-31.

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At present, increasing the energy efficiency of radio electronic equipment is one of the most important tasks in the development and modernization of equipment for all radio services, and in some areas of application of radio electronic equipment, energy efficiency is critical. The main problems that occur in the development and operation of radio transmitting equipment are considered, and solutions are listed that can increase the efficiency of transmitters. Since the increase in energy efficiency is especially important for high-power power amplifiers of the final stages of transmitters, in this paper we analyze the radio transmitters switching operating modes, suitable for building modulators of the final stages of radio transmitters of digital broadcasting systems. The operating modes of switching power amplifiers and methods for achieving high energy efficiency of power amplifiers are discussed, their advantages and disadvantages are shown. The comparative analysis of circuits and classes of various types switching power amplifiers showed that each of them has a number of disadvantages that do not allow choosing the universal optimal version of such amplifier, so that the use of specific power amplifiers depends of the transmitter required characteristics. Another way is to use synthetic and combined methods for constructing high-performance power amplifiers to increase of the transmitters final stages resulting efficiency.

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Kucherov, Y. S., R. V. Dopira, and D. V. Yagolnikov. "Method of component approach to design of sustainable radio equipment." Issues of radio electronics, no. 3 (April 26, 2020): 54–58. http://dx.doi.org/10.21778/2218-5453-2020-3-54-58.

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The article considers the task of designing promising radio equipment. The classification of the components (elements) of the developed samples by their novelty (innovativeness) is given. They are divided into reuse components, which are characterized by minimal design risks, cost and time costs, into innovative (new) components, which have the highest risk of creation, high cost and time costs, but at the same time determine the progressiveness of the created radio engineering Means and on the combined components. The following is the statement of the problem of optimizing the layout of a sample of radio equipment during design by the criterion of «efficiency-cost». The generalized indicator for evaluating the effectiveness of radio equipment of stable functioning is substantiated, including private indicators of reliability, noise immunity, and also cost indicators. To solve this problem, a method of sequential analysis of options is proposed.

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Gordyaskina, Tat'yana, and Lyudmila Serafimovna Grosheva. "Methods of teaching basics of modeling and practical implementation of blocks of multichannel receiver." Vestnik of Astrakhan State Technical University. Series: Management, computer science and informatics 2022, no. 3 (2022): 94–104. http://dx.doi.org/10.24143/2072-9502-2022-3-94-104.

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The paper presents methods of synthesis and research of the principles of functioning the radio-technical multichannel receivers in a case of a TMS320C5510 digital signal processor. The method of synthesizing a model  of an object of professional activity – a multichannel receiver - includes the following stages: theoretical study of the structure and principles of functioning of a digital multichannel receiver of a radio communication channel; computer modeling of the main processes in the receiving radio equipment in the Matlab environment; a laboratory experiment on developing and studying a model of a digital multichannel receiver on a laboratory stand DSK-5510. Conducting the research and the practical work on studying and synthesizing the object of professional activity in case of a model of a heterodyne radio receiver allows students, within the framework of one task, to gain theoretical knowledge about the structure and functioning of complex radio engineering systems, to master methods of radio measurements in digital equipment, to gain skills in technical diagnostics of hardware and software systems, to learn how to choose the measured technical parameters and control points. Introducing the research methods, which include both the theoretical study and computer modeling the processes in complex radio engineering systems, and practical implementing these systems on modern digital equipment in the educational process will increase the quality and efficiency of developing the professional competencies of the future graduates of the specialty “Technical Operation  of Transport Radio Equipment” and raise their competitiveness in the labor market.

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Gakhovych, S. V., M. M. Okhramovych, O. I. Kravchenko, and V. V. Shevchenko. "FREQUENCY ANALYSIS OF THE SIGNALS IN DIAGNOSTIC TESTS BY THE ENERGY-DYNAMIC METHODOLOGY." Collection of scientific works of the Military Institute of Kyiv National Taras Shevchenko University, no. 76 (2022): 5–15. http://dx.doi.org/10.17721/2519-481x/2022/76-01.

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The article analyzes the type of energy-dynamic pulses in the space-time and frequency-spectral domains to improve the diagnostic process of digital standard replacement elementswith large integrated circuits and microprocessor-based large integrated circuits in their design.Creation of new and improvement of existing systems used to determine the technical condition of digital devices in complex conditions requires the development of new methods of diagnosis. This is due to the high complexity of radio-electronic equipment and the shortage of decision time when carrying out technical state control.In the scientific and technical literature on the development and operation of radio electronic equipment, the main attention is paid to the study of the possibility of minimizing the average recovery time and cost of means of diagnostics of the radio electronic equipment object.The main factor holding back the development of modern technical diagnosis systems is the lack of a methodological apparatus capable of significantly more effective use of developed diagnostic models to identify faulty logical elements. Application of the proposed scientific approaches to the processing of diagnostic information will allow: to determine in advance the elements whose characteristics are approaching critical; to determine the technical condition of radio electronic equipment in real time; to monitor the serviceability of elements of radio electronic equipment.It will also allow for more accurate processing of diagnostic parameter values, forecasting failure times of radio electronic components with a given reliability.This, in its turn, will lead to decrease of detection time of sudden failures of radio-electronic facilities and considerably reduce time spent on restoration of digital standard replacement elements of radio-electronic equipment, requirements to which are constantly growing in conditions of repulsion of the russian aggression by the Armed Forces of Ukraine.

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Nedobegkin, M. I., V. A. Sinitsyn, E. A. Sinitsyn, and S. Yu Strakhov. "ENSURING ELECTROMAGNETIC COMPATIBILITY OF RADIONAVIGATION SYSTEMS OF AIRCRAFT AND CELLULAR FACILITIES." Issues of radio electronics, no. 6 (June 21, 2019): 53–59. http://dx.doi.org/10.21778/2218-5453-2019-6-53-59.

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The paper considers the results of the analysis of the causes of unintentional interference to on‑Board and ground equipment of the radio system of near navigation and landing radio beacon landing group, as well as the basic methods and means to ensure the noise immunity of standard equipment on airfields of the Russian Federation. It is noted that the most significant sources of unintended radio interference affecting the operation of on‑Board equipment of radio systems of short‑range navigation of aircraft in its operation with the radio beacons of radio systems of short‑range navigation and landing radio beacon group are the base stations of cellular networks of various standards of 900 MHz range, radio electronic means of television broadcasting, as well as base stations of cellular networks of LTE‑800 standard. It is indicated that with the introduction of azimuth‑long‑range radio beacons of Tropa‑SMD type in operation at aerodromes, the beginning of the transfer of radio‑electronic means of radio short‑range navigation and landing radio beacon into the international frequency range has been outlined. At the same time, there were identified problems in the functioning of the Tropa‑SMD associated with electromagnetic compatibility and regular operation of other electronic means in the same frequency bands. The methods of electromagnetic compatibility in the operation of short‑range navigation radio systems and landing radio beacon group in a complex electronic environment are considered. Proposals to ensure electromagnetic compatibility of Tropa‑SMD based on the use of a set of input filters are presented in more detail.

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V, Anuradha, and Shankar R. "Framework Enhancement for Common Public Radio Interface in SBTS." International Journal of Engineering & Technology 7, no. 3.12 (2018): 38. http://dx.doi.org/10.14419/ijet.v7i3.12.15859.

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There is a rapid growth of mobile users so there are developing more number of features by a service provider to support more number of mobile users. The Common Public Radio Interface (CPRI) is an interface between the Radio Equipment Controller (REC) and Radio Equipment (RE) to support more number of users. This simplifies the overall architecture of radio base station. The radio base station is centralized and the radio heads are distributed in the environment. This radio heads supports the more number of users. The main aim of CPRI is to divide the packets into number of frames. The radio frame is divided into the hyper frames and this hyper frame is divided into the number of basic frame in which each basic frame is supported up to 16 words totally it supports up to 6,144 megabytes per second.

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Savluchinskij, V. V., and D. V. Blazhko. "Actualization of the problem of creation of special equipment for mobile stations of monitoring internet media and radio area based on the chassis of vehicles, which are theirtransport, energy and information-analytical base." «System analysis and applied information science», no. 2 (August 19, 2021): 14–18. http://dx.doi.org/10.21122/2309-4923-2021-2-14-18.

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The specifics of the work of the combat crew for monitoring the Internet media and radio air in combat conditions determines the expected equipment of the combat duty vehicle of the crew for monitoring the Internet media and radio air.The combat duty vehicle refers to special equipment and is used in mobile monitoring stations for Internet media and radio broadcasting based on the chassis of vehicles, which are their transport, energy and information-analytical base.

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Ostapchuk, Viktor, Oleg Sova, Andrii Shyshatskyi, and Olexander Harashchuk. "DEVELOPMENT OF A MATHEMATICAL MODEL OF THE FUNCTIONING OF MULTI-ANTENNA RADIO COMMUNICATIONS WITH SPECTRALLY EFFECTIVE SIGNALS UNDER THE INFLUENCE OF DESTABILIZING FACTORS." ScienceRise 4 (August 31, 2020): 40–45. http://dx.doi.org/10.21303/2313-8416.2020.001393.

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The necessity of developing a mathematical model for the functioning of multi-antenna radio communication facilities with spectrally effective signals under the influence of destabilizing factors has been substantiated. The results of the study of the influence of destabilizing factors on the multi-antenna systems with spectrally effective signals are presented. New analytical dependences have been obtained, which make it possible to calculate the effect of destabilizing factors on the efficiency of multi-antenna system with spectrally effective signals. Object of research: development of a mathematical model of the functioning of multi-antenna radio communication facilities with spectrally effective signals under the influence of destabilizing factors. Investigated problem: taking into account additional destabilizing factors on the multi-antenna of a radio communication facility with spectrally effective signals. Main scientific results: when transmitting information in multi-antenna radio communication systems with spectrally effective signals, the following are taken into account: Type of parameters of deliberate interference, type and parameters of deliberate fading, type and parameters of security code structures, phase jitter, slope of the constellation matrix, Intersymbol interference, high mobility of objects (transmitter and receiver), the number of receiving and transmitting antennas, the number of subcarriers in the antenna channel. It has been established that taking into account all the parameters in the system makes it possible to assess the state of the channel, to develop measures to reduce the negative influence of destabilizing factors on the noise immunity of multi-antenna systems. A review of the practical use of research results: radio communication facilities with programmable architecture. Innovative technologies product: technology for substantiating the architecture of transceivers, software for programmable radio equipment, which can increase the noise immunity of radio communications, taking into account additional destabilizing factors and software for radio monitoring equipment. Overview of an innovative technological product: programmable radios, software for radio communications.

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Mansour, Marwa, R. S. Ghoname, and Abdelhalim Zekry. "Building Radio Frequency Transmitter for LTE User Equipment." Communications on Applied Electronics 2, no. 4 (2015): 1–9. http://dx.doi.org/10.5120/cae2015651698.

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Filippov, A. "STACKICAP CAPACITORS: NEW POSSIBILITIES FOR RADIO ELECTRONIC EQUIPMENT." ELECTRONICS: Science, Technology, Business 3, no. 163 (2017): 46–50. http://dx.doi.org/10.22184/1992-4178.2017.163.3.46.50.

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DEMOTT, KATHRYN. "Radio Frequency ID Devices Can Interfere With Equipment." Hospitalist News 1, no. 4 (2008): 14. http://dx.doi.org/10.1016/s1875-9122(08)70110-x.

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Mavrina, Olena. "Methods of constructive synthesis of antenna system of radio communication building on low-lying vibrators." Collection "Information Technology and Security" 10, no. 1 (2022): 97–107. http://dx.doi.org/10.20535/2411-1031.2022.10.1.261179.

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In recent years, the radio communication system has undergone significant modernization. This concerns both the design and development of new means of communication and the improvement and modernization of existing ones and the development of new antenna-feeder devices for them. A general feature of radio communication networks is the significant dependence of the main characteristics of communication objects on the type and parameters of antenna systems and on decisions regarding their location. The developed technique of constructive synthesis of the antenna system of the radio communication device built on low-lying emitters is offered, with the help of which it is possible to synthesize the antenna system which will improve the technical characteristics of the mobile radio communication means. The method of constructive synthesis of the antenna system of radio communication equipment built on low-lying emitters is based on the mathematical model of calculating the directional characteristics of the speaker from low-located emitters for radio communication facilities. This model was presented in the article “Mathematical model for calculating the directional characteristics of the system of vibrators of radio communication equipment” [1]. Research methods – synthesis of antenna systems with the necessary pattern is based on the Hertz vector method, the method of induced electromotive forces, the method of mirror images and analysis of the results. The influence of the shape and number of elements of the antenna system on the formation of its radiation pattern is determined and the calculation for the selection of the optimal design with the required electrical characteristics is established. That is, the proposed technique helps to improve and simplify the technical performance of transmitting and receiving speakers. Based on the results of the research, a mathematical model for calculating the directional characteristics of the AS, built on low-lying emitters for radio communication equipment and methods of constructive synthesis of AS radio communication equipment built on low-located emitters, which is possible in the absence of with realized gain up to 16 dB. It is expedient to apply the developed technique: during the development of new AS and antenna-feeder devices for modern field radio communication equipment and AS for unmanned aerial vehicles; during the organization of communication by a field special radio communication node.

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Amgad, Mirhan, Iman Morsi, and Mohamed M. M. Omar. "Control Ports Authorities’ Equipment Based on RFID and SQL Security System." Journal of Physics: Conference Series 2128, no. 1 (2021): 012002. http://dx.doi.org/10.1088/1742-6596/2128/1/012002.

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Abstract Equipment surveillance or tracking is a hard-to-accomplish mission for a multi-locations company. This study examines a complete security system in Alexandria and EL-Dekheila ports of Egypt, as case study, to track equipment location. The system uses RFID (radio frequency identification) and Arduino kit as hardware to detect equipment motion, and visual studio and SQL (structured query language) as software to produce reports. The original place of equipment is saved as a reference. IR and RFID sensors are used at every department’s gate for IT access and for detecting and decoding the received equipment’s RFID card and ID data. Visual studio and SQL help in issuing the report on each equipment’s location and movement time. The system sends instant email messages and cellular phone messages to the control room.

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Leuchter, Jan, Radim Bloudicek, Jan Boril, Josef Bajer, and Erik Blasch. "Influence of Aircraft Power Electronics Processing on Backup VHF Radio Systems." Electronics 10, no. 7 (2021): 777. http://dx.doi.org/10.3390/electronics10070777.

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The paper describes the influence of power electronics, energy processing, and emergency radio systems (ERS) immunity testing on onboard aircraft equipment and ground stations providing air traffic services. The implementation of next-generation power electronics introduces potential hazards for the safety and reliability of aircraft systems, especially the interferences from power electronics with high-power processing. The paper focuses on clearly identifying, experimentally verifying, and quantifiably measuring the effects of power electronics processing using switching modes versus the electromagnetic compatibility (EMC) of emergency radio systems with electromagnetic interference (EMI). EMI can be very critical when switching power radios utilize backup receivers, which are used as aircraft backup systems or airport last-resort systems. The switching power electronics process produces interfering electromagnetic energy to create problems with onboard aircraft radios or instrument landing system (ILS) avionics services. Analyses demonstrate significant threats and risks resulting from interferences between radio and power electronics in airborne systems. Results demonstrate the impact of interferences on intermediate-frequency processing, namely, for very high frequency (VHF) radios. The paper also describes the methodology of testing radio immunity against both weak and strong signals in accordance with recent aviation standards and guidance for military radio communication systems in the VHF band.

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Korchagin, D. S. "INCREASING THE RESISTANCE OF CONNECTORS TO EXTERNAL INFLUENCING FACTORS." RADIO COMMUNICATION TECHNOLOGY, no. 50 (September 30, 2021): 112–19. http://dx.doi.org/10.33286/2075-8693-2021-50-112-119.

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The article is devoted to the issue of increasing the resistance of connectors used in radio equipment to external influencing factors. The paper analyzes the influence of external factors on connectors. We consider a technical solution that increases the reliability of connectors in radio equipment when exposed to harsh operating conditions.

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Solomentsev, Oleksandr, Maksym Zaliskyi, Tetyana Herasymenko, and Yuliia Petrova. "Method for Changepoint Detection With Sample Size Accumulation During Radio Equipment Operation." Electrical, Control and Communication Engineering 16, no. 1 (2020): 23–29. http://dx.doi.org/10.2478/ecce-2020-0004.

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AbstractThe operation system determines the efficiency of the intended use of radio equipment. The operation system includes radio equipment, documentation, operational resources, personnel, processes, data processing algorithms, etc. The operation process is associated with conditions of priori uncertainty of models, parameters, external factors, etc. The main element for monitoring is technical condition of radio equipment. In a general case, this condition can deteriorate. The problems of technical condition deterioration analysis can be considered in terms of changepoint study. The present paper concentrates on the problem of synthesis and analysis of method for changepoint detection during radio equipment operation. The detection algorithm is constructed based on Neyman–Pearson criterion with sample size accumulation. During algorithm synthesis the thresholds were calculated according to Bellman’s approach. The problem of synthesis and analysis was solved by two methods: analytically and using statistical modelling. The efficiency measures for this algorithm are the probability of correct detection and mean time of decision making. The proposed algorithm has advantages in mean time of decision making compared with CUSUM detection method.

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Chimeh, Jahangir Dadkhah, Saeed Bashirzadeh Parapari, and Seyed Mohmoud Mousavinejad. "Millimetric Waves Technologies: Opportunities and Challenges." Key Engineering Materials 500 (January 2012): 263–68. http://dx.doi.org/10.4028/www.scientific.net/kem.500.263.

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Providing an available wideband and better antenna beam forming are two good profits of millimeter wave (mmWave) technology. MmWave technology makes radio systems lighter and smaller and radars more precise. Today, commercial MmWave equipment work below 90GHz frequencies. MmWave radios work to transport Internat traffic in the backhaul of communication networks. There is a challenge in mmWave technology since the prices of equipment increases as the frequency increases. In this paper we study the applications of mmWave technology, its products, standards and compare it with other wireless technologies.

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Djunaedi, Djunaedi, Rusman, and Ahmad Bahrawi. "Pengembangan Radio Komunikasi VHF A/G Type Icom-A210." Airman: Jurnal Teknik dan Keselamatan Transportasi 3, no. 2 (2021): 14–18. http://dx.doi.org/10.46509/ajtkt.v3i2.63.

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The VHF communication radio type IC - A210 is an air to ground communication radio used by the Lion Air Goup airline in carrying out its operations, this device's performance is reduced due to a change in the structure of one of the functions of the transmission cable. To improve the performance of these devices, a remote amplifier is made, so that communication can run normally and problems can be resolved. Remote amplifier is additional equipment intended for VHF communication equipment type IC - A210, this equipment consists of a Mic added with PTT, two amplifiers where one amplifier functions as an information signal amplifier coming from the FOO (Flight Operations Officer) officer on land via the mic then sent to the VHF communication equipment to be transmitted to the aircraft and the other amplifier functions as an information signal amplifier from the VHF communication equipment after receiving a reply from the pilot to be heard by the ground FOO officer. The work of the two amplifiers is alternately arranged using relay components that are regulated from the PTT by the FOO on the ground. The way to operate this Remote Amplifier equipment is the same as how to operate the VHF communication equipment type IC - A210 so that its use does not require special knowledge, so that the officer seems to be using VHF communication equipment directly.

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Kumar, Arun. "3G Networks: Opportunities and Challenges." Bulletin of Mathematical Sciences and Applications 3 (February 2013): 28–36. http://dx.doi.org/10.18052/www.scipress.com/bmsa.3.28.

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Several applications of practical interest stem fromthe capability to monitor and store packet-level traces in a 3Gnetwork. Among them, the possibility to infer andlocatenetwork problems (e.g. persistent shortage of capacity,or equipment misfunctioning), in the core and radio sections,without direct access to the equipments. This approach yieldsstrong practical benefits, given the costs and complexity ofaccessing network equipments, especially in the Radio AccessNetwork. At the same time, it exposes practical issues - e.g. theneed to dynamically locate the traffic sources (Mobile Stations)- and theoretical problems - e.g. inferring congested cells fromRouting-Area level TCP measurements. We report on our work-in-progress aimed at implementing such mechanisms on top ofan advanced monitoring system now deployed in anoperational network.

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Budko, Pavel, Vladimir Goydenko, Aleksei Rozhnov, and Aleksei Vinogradenko. "The Integrated Statistical Control Method of Technical Condition of Radio-Electronic Equipment for Prototyping of Robotic Systems." EPJ Web of Conferences 248 (2021): 02004. http://dx.doi.org/10.1051/epjconf/202124802004.

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In the article, the approach of integrated statistical control and diagnostics of the radio-electronic equipment, which is based on the analysis, integration of the measuring information arriving from the thermal imager, magnetic field sensors, tension and humidity of air and also statistical control of equipment parameters, is presented. The solution of a control and diagnostics problem is based on monitoring of changes in the average level of a multi-parameter process. Here, Hotelling control charts, integration and processing of the measured information are used to provide the analysis and decision-making on the influence of the operator. The algorithm implements a technique of integrated statistical control of the technical condition of the radio-electronic equipment and is capable to determine the level of its precritical condition. The proposed technique increases the reliability of the identification of technical conditions of radio-electronic equipment and expands the scope of technical means of control and diagnostics.

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Wang, Xiaoshuang, Jing Zhao, Xuejun Rao, and Lihua Qi. "Research and Implementation of a High-efficiency and Intelligent Power Supply System for Radio Equipment." Journal of Physics: Conference Series 2656, no. 1 (2023): 012004. http://dx.doi.org/10.1088/1742-6596/2656/1/012004.

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Abstract The use of nickel-metal hydride batteries in tactical radios will lead to problems such as heavier loads, shorter battery life, and less intelligent power supply systems. Because analyzing the power supply guarantee requirements of tactical radio stations, this paper firstly models and simulates lithium-ion batteries to accurately estimate key design parameters such as lithium-ion power and balance control. Then, high-efficiency integration technologies of new materials such as PAA and LiPF6 are used to develop lithium-ion batteries with high specific energy density, good high and low-temperature performance, and lightweight. At the same time, DSP technology is used to develop battery fast charging and intelligent management software and hardware systems to achieve fast and real-time detection of battery state of charge, health state, and functional state. The battery-intelligent power supply system will provide theoretical guidance and technical support for the overall improvement of the combat effectiveness of tactical radio equipment.

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Starostin, E. A., A. P. Lebedev, M. S. Moskovskih, and E. P. Maslov. "Development of technology to ensure minimal thermal resistance between mating surfaces while simulating outer space conditions." Spacecrafts & Technologies 3, no. 4 (2019): 216–21. http://dx.doi.org/10.26732/2618-7957-2019-4-216-221.

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The transition to the leaky design of the instrument compartment of the spacecraft inevitably leads to additional thermal loads on the components of the onboard electronic equipment due to a change in the heat transfer scheme. The thermal mode of operation of the onboard radio-electronic equipment of the spacecraft is one of the important factors for ensuring the long term active existence of the spacecraft. Ensuring the long term of active existence of spacecraft is the most important scientific, engineering and economic task, the solution of which requires a deep systematic approach at all stages of the creation and operation of onboard electronic equipment of the spacecraft. The strategic objective for ensuring the long term of the spacecraft’s active existence is the implementation at all stages of the life cycle of onboard radio-electronic equipment of the highest achievable reliability indicators through the using of modern design and technological solutions, as well as effective methods for its design and production. This article presents the results of experimental work to reduce heat transfer resistance between onboard electronic equipment and the spacecraft’s thermal control system. As a result of the work, the main data were obtained on improving the heat sink efficiency of the energy-converting equipment of the spacecraft, the effectiveness of measures to ensure heat removal of the onboard radio-electronic equipment of the spacecraft was confirmed.

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Constance, Anshemeza, and Joel Isabirye. "THE IMPACT OF MODERN INFORMATION AND COMMUNICATION TECHNOLOGY ON UGANDAN RADIO BROADCASTING: A CASE STUDY OF CAPITAL RADIO." IDOSR JOURNAL OF COMMUNICATION AND ENGLISH 9, no. 2 (2024): 25–43. http://dx.doi.org/10.59298/idosr/jce/92.2543.202412.

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Media organizations in Uganda are not exempt from the media industry’s ongoing efforts to digitize its operations, particularly in developing nations. Global change is effectively sparked by the advancements in new media technologies. The method, precision, and speed of message generation and transport have all been greatly enhanced by these technologies, and they have also completely changed the definition of broadcasting. Still, in an information-overloaded world, figuring out where broadcasting fits in is getting harder and harder. The survey research approach was employed to gather pertinent data for the study in order to develop data for it. The results of the data analysis showed that the production of the station under investigation has been significantly impacted by new media technologies. Lack of technical expertise and the expense of purchasing necessary equipment continue to be major obstacles to their efficacy. According to the study’s conclusions, the government should lower the value-added tax on new media equipment as doing so will lower the equipment’s overall cost and ease the financial strain on the station. The use of new media technologies can expand the broadcasting industry’s reach and elevate Uganda’s broadcast sector to a global player. This is only possible if there are no barriers preventing the broadcast media sector from effectively acquiring new and improved infrastructure. Workshops, symposia, seminars, and training courses should all be used to try and educate current and future broadcasters. Keywords: Media, Information Communication Technology (ICT), Radio Broadcasting

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Tymchenko, S., V. Lazarev, and I. Mayboroda. "ENSURING MANAGEMENT OF THE DEPLOYMENT OF THE MOBILE COMPONENT OF THE COMMUNICATION SYSTEM OF UNITS AND PARTS OF THE NATIONAL GUARD OF UKRAINE WITH DIGITAL RADIO EQUIPMENT." Scientific journal of the National Academy of National Guard "Honor and Law" 3, no. 86 (2023): 131–36. http://dx.doi.org/10.33405/2078-7480/2023/3/86/287132.

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The capabilities of modern Harris RF-7800S-TR digital radios for managing communication units are considered. A comparative analysis of the capabilities of the Motorola DP4800 and Harris RF-7800S-TR radio stations was carried out in providing control over the deployment of the mobile communication center of the auxiliary control point of the territorial control of the National Guard of Ukraine. Proposed recommendations for the implementation of the topology of the Harris RF-7800S-TR radio station programming file for the management of the process of deploying a field communication node on one operating frequency with the separation of all radio networks and ensuring their simultaneous operation independently of each other and with access only to the appropriate management levels. The research results make it possible to develop an innovative frequency plan for the deployment control system of the auxiliary control point field communication node. At the same time, all radio stations operate on the same frequency, using different positions of the radio station channel switch. Separation of radio networks is temporary, and access to radio networks is carried out using various tangents, the functions of which are programmed in advance. Thus, the modern Harris RF-7800S-TR digital radio station, which is in service with NSU units, allows for reliable management of the deployment of a field communication node with the fulfillment of all requirements for security, communication security, and with minimal expenditure of material resources, and the conducted class on the implementation of the topology of the radio station programming file will provide the most effective training of communication specialists for positions in the military.

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Lienkov, S., G. Banzak, G. Zhyrov, M. Okhramovych, and Ya Protsenko. "OPTIMIZATION OF MAINTENANCE COMPLEX OBJECTS OF RADIO ELECTRONIC EQUIPMENT." Collection of scientific works of the Military Institute of Kyiv National Taras Shevchenko University, no. 64 (2019): 45–52. http://dx.doi.org/10.17721/2519-481x/2019/64-05.

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The article discusses models for optimizing the maintenance eservice process (MS) of complex objects of radio-electronic technics (RET). The statement of the problem determining optimal parameters of objects MS is formulated for the case if the state maintenance strategy MS (MSS strategy) is used. As a criterion of optimization, the requirement minimum unit cost of operating an object for a given period of its operation is used, provided that the required level of failure-free operation of the object is estimated as estimated by “mean time on failures”. The objective functions of the optimization task are determined by modeling the process of MS and repair (MSandR) of the object. This circumstance explains the choice of a search method for an approximately optimal solution to the problem: simplest relaxation method of direct enumeration is used, controlled by a human expert who solves this problem in the interactive dialogue mode between the user and the computer. The methodology for determining approximately optimal parameters of strategy MSS described in this article is intended for use in the development of object RET. The methodology allows the early stages of development to pre-evaluate possibility of increasing level reliability of the facility due MS. At later stages of development, when all technical solutions have already become known, elements for which there are measurable determining parameters become known, preliminary estimates of the necessary parameters MSS can be refined and corrected design decisions. Corresponding refinement of calculations should be made every time when accurate data on the reliability of component parts appear. Software (SW) was developed for computer support of the solution search process. SW developed by Delphi programming tools.

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Ratkin, L. "Prospects for the development of airborne radio electronic equipment." ELECTRONICS: Science, Technology, Business, no. 7 (2018): 42–44. http://dx.doi.org/10.22184/1992-4178.2018.178.7.42.44.

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Demchenko, N. F., R. A. Kuznetsov, V. I. Shipilov, N. N. Moiseev, and I. A. Kharitonov. "Specialized Gamma-Spectrometry Equipment for Certifying Radio-Nuclide Sources." Measurement Techniques 57, no. 5 (2014): 557–59. http://dx.doi.org/10.1007/s11018-014-0496-y.

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Hirons, Graham. "Wildlife Radio Tagging: Equipment, Field Techniques and Data analysis." Trends in Ecology & Evolution 3, no. 2 (1988): 56–57. http://dx.doi.org/10.1016/0169-5347(88)90052-3.

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Bykov, Alexey P. "Algorithm for conducting autonomous tests of radio electronic means." Physics of Wave Processes and Radio Systems 23, no. 3 (2020): 97–104. http://dx.doi.org/10.18469/1810-3189.2020.23.3.97-104.

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Due to the increasing complexity of radio electronic equipment, the problem of its reliability becomes much more acute. At the same time, the task of evaluating on-board equipment at the design and production stages becomes very urgent. An important issue is also the reliable determination of numerical values of its reliability indicators. Ground-based experimental testing of samples of on-board radio-electronic facilities, devices, assemblies and units facilitates the solution of this problem. Inthe course of this testing, various tests conducted. It been shown that the timeliest information about the quality and reliability of the equipment can be obtained from autonomous tests. In the article, the choice of an autonomous test facility has made. Amicroprocessor-based temperature controller chosen as an autonomous test object. The expert evaluation method used to select the object. Analysis of specifications carried out. The scope of autonomous tests was determined. An algorithm for autonomous testing of on-board radio electronic equipment of spacecraft was developed. It has properties of discreteness, determinacy, limb and mass. The development of the autonomous test algorithm takes more account of the specifics of the technology used to manufacture the product under test and the test sequence. One of the options for mathematical modelling of the process of selecting test equipment for autonomous tests been considered.

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Suprapto, Irawan, and Rosy Febriani Daud. "Pelatihan Kepenyiaran dan Sosialisasi melalui Program Acara “Ngobrol Pintar (Ngopi)” di Radio Basuma FM." TA'AWUN 2, no. 01 (2022): 104–14. http://dx.doi.org/10.37850/taawun.v2i01.249.

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The broadcasting field is growing rapidly according to the level of human civilization which is increasingly advancing with advances in communication technology. Radio is one of the electronic media for distributing information and forming communication and public opinion which has a very strategic role. In its development, radio has become a communicative, educative and entertaining medium, which only requires the sense of hearing so that it can be heard anywhere. As an electronic mass media, a lot of information about the social condition of North Lampung district and entertainment is packaged into a "Smart Chat" (Ngopi) program presented by students of the communications science study program at Muhammadiyah University of Kotabumi (UMKO) and in collaboration with Radio Bahana Surya Melati (BASUMA)) FM. Based on the background of the problem, problems can be formulated on how to provide information on the radio properly or radio broadcasts properly and how to socialize the Communication Studies Program to residents around North Lampung Regency. This service activity aims to provide training and broadcasting skills and socialization of the Communication Science study program to Communication Science students at the University of Muhammadiyah Kotabumi (UMKO). The method used in this service activity is by several methods, namely lectures, discussions, and questions and answers. Based on the results of the radio broadcasting training activities and the socialization of the communication science study program (Ilkom) through the "Smart Chat (Ngopi)" program, the theory related to the skills of using equipment (operating skills) of broadcasting training participants on BASUMA FM radio can be said that broadcasting training participants on BASUMA FM radio, almost master and can operate all broadcast equipment, however, in addition to mastering broadcast equipment, a broadcaster must also be able to turn on and turn off radio transmitters.

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Journal articles on the topic 'Radio equipment'

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