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Radio Wave Spectrum Allocations and Dial Markings on Old Radios – Page 1
Radio Wave Spectrum Allocations and Dial Markings on Old Radios – page 1 When you look at the dial of an old radio you may be confused by the numbers and letters written on the dial. In Australia and New Zealand the dials of Medium Wave radios (often called the Broadcast Band) were usually marked with the station call signs. In Australia, if the dial scale was quite small, a radio would only have the stations in that state marked on the dial. Some radios also had the Frequency and/or the Wave Length marked but this was not common throught period from 1936 to the end of the Australian made radios. Medium Wave Broadcast Band This is the band we tune to when we listen to an AM radio and most countries use frequency allocations between 526.5KHz and 1705KHz. Not all countries use all this allocation. Stereo transmission is possible and has been offered by some stations in the U.S., Canada, Mexico, the Dominican Republic, Paraguay, Australia, The Philippines, Japan, South Korea, South Africa, and France. However, there are multiple standards for AM stereo with C-QUAM being the most common in the United States as well as other countries, and receivers that implement the technologies are relatively rare. The FM Broadcast Band This is the range of frequencies we tune to when we tune a modern FM radio receiver. The international frequency allocation for this band is now 87.5MHz to 108MHz. This is often referred to as the CCIR Band. Over the years some countries have used other frequencies for this band and you will see these on the dials of some old FM radios you may find from time to time. -
BETS-5 Issue 1 November 1, 1996
BETS-5 Issue 1 November 1, 1996 Spectrum Management Broadcasting Equipment Technical Standard Technical Standards and Requirements for AM Broadcasting Transmitters Aussi disponible en français - NTMR-5 Purpose This document contains the technical standards and requirements for the issuance of a Technical Acceptance Certificate (TAC) for AM broadcasting transmitters. A certificate issued for equipment classified as type approved or as technically acceptable before the coming into force of these technical standards and requirements is considered to be a valid and subsisting TAC. A Technical Acceptance Certificate is not required for equipment manufactured or imported solely for re-export, prototyping, demonstration, exhibition or testing purposes. i Table of Contents Page 1. General ...............................................................1 2. Testing and Labelling ..................................................1 3. Standard Test Conditions ..............................................2 4. Transmitting Equipment Standards .....................................3 5. Equipment Requirements ..............................................4 6. RF Carrier Performance Standards .................................... 5 6.1 Power Output Rating .................................................5 6.2 Modulation Capability ................................................5 6.3 Carrier Frequency Stability ............................................6 6.4 Carrier Level Shift ...................................................7 6.5 Spurious Emissions -
Radio Communications in the Digital Age
Radio Communications In the Digital Age Volume 1 HF TECHNOLOGY Edition 2 First Edition: September 1996 Second Edition: October 2005 © Harris Corporation 2005 All rights reserved Library of Congress Catalog Card Number: 96-94476 Harris Corporation, RF Communications Division Radio Communications in the Digital Age Volume One: HF Technology, Edition 2 Printed in USA © 10/05 R.O. 10K B1006A All Harris RF Communications products and systems included herein are registered trademarks of the Harris Corporation. TABLE OF CONTENTS INTRODUCTION...............................................................................1 CHAPTER 1 PRINCIPLES OF RADIO COMMUNICATIONS .....................................6 CHAPTER 2 THE IONOSPHERE AND HF RADIO PROPAGATION..........................16 CHAPTER 3 ELEMENTS IN AN HF RADIO ..........................................................24 CHAPTER 4 NOISE AND INTERFERENCE............................................................36 CHAPTER 5 HF MODEMS .................................................................................40 CHAPTER 6 AUTOMATIC LINK ESTABLISHMENT (ALE) TECHNOLOGY...............48 CHAPTER 7 DIGITAL VOICE ..............................................................................55 CHAPTER 8 DATA SYSTEMS .............................................................................59 CHAPTER 9 SECURING COMMUNICATIONS.....................................................71 CHAPTER 10 FUTURE DIRECTIONS .....................................................................77 APPENDIX A STANDARDS -
GLOSSARY of Telecommunications Terms List of Abbreviations for Telecommunications Terms
GLOSSARY of Telecommunications Terms List of Abbreviations for Telecommunications Terms AAL – ATM Adaptation Layer ADPCM – Adaptive Differential Pulse Code Modulation ADSL – Asymmetric Digital Subscriber Line AIN – Advanced Intelligent Network ALI – Automatic Location Information AMA - Automatic Message Accounting ANI – Automatic Number Identification ANSI –American National Standards Institute API – Applications Programming Interface ATM – Asychronous Transfer Mode BHCA – Busy Hour Call Attempts BHCC – Busy Hour Call Completions B-ISDN – Broadband Integrated Services Digital Network B-ISUP – Broadband ISDN User’s Part BLV – Busy Line Verification BNS – Billed Number Screening BRI – Basic Rate Interface CAC – Carrier Access Code CCS – Centi Call Seconds CCV – Calling Card Validation CDR – Call Detail Record CIC – Circuit Identification Code CLASS – Custom Local Area Signaling CLEC – Competitive Local Exchange Carrier CO – Central Office CPE – Customer Provided/Premise Equipment CPN – Called Party Number CTI – Computer Telephony Intergration DLC – Digital Loop Carrier System DN – Directory Number DSL – Digital Subscriber Line DSLAM – Digital Subscriber Line Access Multiplexer DSP – Digital Signal Processor DTMF – Dual Tone Multi-Frequency ESS – Electronic Switching System ETSI - European Telecommunications Standards Institute GAP – Generic Address Parameter GT – Global Title GTT – Global Title Translations HFC – Hybrid Fiber Coax IAD – Integrated Access Device IAM – Initial Address Message ICP – Integrated Communications Provider ILEC -
Guidelines on Mobile Device Forensics
NIST Special Publication 800-101 Revision 1 Guidelines on Mobile Device Forensics Rick Ayers Sam Brothers Wayne Jansen http://dx.doi.org/10.6028/NIST.SP.800-101r1 NIST Special Publication 800-101 Revision 1 Guidelines on Mobile Device Forensics Rick Ayers Software and Systems Division Information Technology Laboratory Sam Brothers U.S. Customs and Border Protection Department of Homeland Security Springfield, VA Wayne Jansen Booz-Allen-Hamilton McLean, VA http://dx.doi.org/10.6028/NIST.SP. 800-101r1 May 2014 U.S. Department of Commerce Penny Pritzker, Secretary National Institute of Standards and Technology Patrick D. Gallagher, Under Secretary of Commerce for Standards and Technology and Director Authority This publication has been developed by NIST in accordance with its statutory responsibilities under the Federal Information Security Management Act of 2002 (FISMA), 44 U.S.C. § 3541 et seq., Public Law (P.L.) 107-347. NIST is responsible for developing information security standards and guidelines, including minimum requirements for Federal information systems, but such standards and guidelines shall not apply to national security systems without the express approval of appropriate Federal officials exercising policy authority over such systems. This guideline is consistent with the requirements of the Office of Management and Budget (OMB) Circular A-130, Section 8b(3), Securing Agency Information Systems, as analyzed in Circular A- 130, Appendix IV: Analysis of Key Sections. Supplemental information is provided in Circular A- 130, Appendix III, Security of Federal Automated Information Resources. Nothing in this publication should be taken to contradict the standards and guidelines made mandatory and binding on Federal agencies by the Secretary of Commerce under statutory authority. -
History of Radio Broadcasting in Montana
University of Montana ScholarWorks at University of Montana Graduate Student Theses, Dissertations, & Professional Papers Graduate School 1963 History of radio broadcasting in Montana Ron P. Richards The University of Montana Follow this and additional works at: https://scholarworks.umt.edu/etd Let us know how access to this document benefits ou.y Recommended Citation Richards, Ron P., "History of radio broadcasting in Montana" (1963). Graduate Student Theses, Dissertations, & Professional Papers. 5869. https://scholarworks.umt.edu/etd/5869 This Thesis is brought to you for free and open access by the Graduate School at ScholarWorks at University of Montana. It has been accepted for inclusion in Graduate Student Theses, Dissertations, & Professional Papers by an authorized administrator of ScholarWorks at University of Montana. For more information, please contact [email protected]. THE HISTORY OF RADIO BROADCASTING IN MONTANA ty RON P. RICHARDS B. A. in Journalism Montana State University, 1959 Presented in partial fulfillment of the requirements for the degree of Master of Arts in Journalism MONTANA STATE UNIVERSITY 1963 Approved by: Chairman, Board of Examiners Dean, Graduate School Date Reproduced with permission of the copyright owner. Further reproduction prohibited without permission. UMI Number; EP36670 All rights reserved INFORMATION TO ALL USERS The quality of this reproduction is dependent upon the quality of the copy submitted. In the unlikely event that the author did not send a complete manuscript and there are missing pages, these will be noted. Also, if material had to be removed, a note will indicate the deletion. UMT Oiuartation PVUithing UMI EP36670 Published by ProQuest LLC (2013). -
The Market Leader in Over-The-Air Broadcasting Solutions
Connecting What’s Next The Market Leader in Over-the-Air Broadcasting Solutions GatesAir efficiently leverages broadcast spectrum to maximize performance for multichannel TV and radio services, offering the industry’s broadest portfolio to help broadcasters wirelessly deliver and monetize content. With nearly 100 years in broadcasting, GatesAir’s exclusive focus on the over-the-air market helps broadcasters optimize services today and prepare for future revenue-generating business opportunities. All research, development and innovation is driven from the company’s facilities in Mason, Ohio and supported by the long-standing manufacturing center in Quincy, Illinois. GatesAir’s turnkey solutions are built on three pillars: Content Transport, TV Transmission, and Radio Transmission. GatesAir’s globally renowned Intraplex range comprises the Transport pillar, enabling audio contribution and distribution (along with data) over IP and TDM networks. Intraplex solutions provide value for broadcasters for point-to-point (STL, remote broadcast) and multipoint (single-frequency networks, syndicated distribution) connectivity. GatesAir continues to innovate robust and reliable solutions for traditional RF STL connections that can also accommodate IP traffic. In larger transmitter networks, Simulcasting technology ensures all GatesAir transmitters are time-locked for synchronous, over-the-air content delivery. Powering over-the-air analog and digital radio/TV stations and networks worldwide with the industry’s most operationally efficient transmitters is a longtime measure of success for GatesAir. Groundbreaking innovations in low, medium and high- power transmitters reduce footprint, energy use and more to establish the industry’s lowest total cost of ownership. Support for all digital standards and convergence with mobile networks ensure futureproof systems. -
Radiodetermination, Air Traffic and Maritime Services Licence Guidelines
Guidelines Radiodetermination, Air Traffic and Maritime Services Licence Guidelines Document No: ComReg 11/07R1 Date: May 2017 This document does not constitute legal, commercial, financial, technical or other advice and the Commission for Communications Regulation shall not, at any time, be bound by the contents of this document which do not necessarily set out the Commission’s final or definitive position in any particular matter. The Commission reserves its right to act at all times in accordance with its statutory functions and objectives and this may include reaching a decision or taking an action which is at variance with all or any part of these guidelines. An Coimisiún um Rialáil Cumarsáide Commission for Communications Regulation One Dockland Central, Guild Street, Dublin 1, D01 E4X0, Ireland Telephone +353 1 804 9600 Fax +353 1 804 9680 Email [email protected] Web www.comreg.ie Radiodetermination, Air Traffic & Maritime Services Guidelines Contents 1 Introduction ................................................................................... 3 2 Radiodetermination, Air Traffic and Maritime Services – An Overview ..... 4 3 Air Traffic Services Licence ............................................................... 7 3.1 AIR TRAFFIC SERVICES APPLICATION REQUIREMENTS .......................................... 8 4 Maritime Services Licence ................................................................ 9 4.1 LAND BASED MARITIME MOBILE ................................................................ 10 4.2 LAND BASED PRIVATE MARITIME -
Global Maritime Distress and Safety System (GMDSS) Handbook 2018 I CONTENTS
FOREWORD This handbook has been produced by the Australian Maritime Safety Authority (AMSA), and is intended for use on ships that are: • compulsorily equipped with GMDSS radiocommunication installations in accordance with the requirements of the International Convention for the Safety of Life at Sea Convention 1974 (SOLAS) and Commonwealth or State government marine legislation • voluntarily equipped with GMDSS radiocommunication installations. It is the recommended textbook for candidates wishing to qualify for the Australian GMDSS General Operator’s Certificate of Proficiency. This handbook replaces the tenth edition of the GMDSS Handbook published in September 2013, and has been amended to reflect: • changes to regulations adopted by the International Telecommunication Union (ITU) World Radiocommunications Conference (2015) • changes to Inmarsat services • an updated AMSA distress beacon registration form • changes to various ITU Recommendations • changes to the publications published by the ITU • developments in Man Overboard (MOB) devices • clarification of GMDSS radio log procedures • general editorial updating and improvements. Procedures outlined in the handbook are based on the ITU Radio Regulations, on radio procedures used by Australian Maritime Communications Stations and Satellite Earth Stations in the Inmarsat network. Careful observance of the procedures covered by this handbook is essential for the efficient exchange of communications in the marine radiocommunication service, particularly where safety of life at sea is concerned. Special attention should be given to those sections dealing with distress, urgency, and safety. Operators of radiocommunications equipment on vessels not equipped with GMDSS installations should refer to the Marine Radio Operators Handbook published by the Australian Maritime College, Launceston, Tasmania, Australia. No provision of this handbook or the ITU Radio Regulations prevents the use, by a ship in distress, of any means at its disposal to attract attention, make known its position and obtain help. -
Guidelines for FM Broadcast Standards
TECHNICAL GUIDELINES FOR FM BROADCAST STANDARDS Directorate of Technical Regulations February 2014 94, Kairaba Avenue, P. O. Box 4230 Bakau, The Gambia Tel. (220) 4399601 / 4399606 Fax: (220) 4399905 EMail: [email protected] Website: www.pura.gm Contents 1. DEFINITIONS ........................................................................................................................... 2 2. INTRODUCTION ...................................................................................................................... 3 3. CLASSES OF FM BROADCAST STATIONS ........................................................................ 3 3.1 Public/Commercial FM station .................................................................................................. 3 3.2 Community Fm Stations ............................................................................................................. 3 3.3 Educational/Scientific FM station [Non Commercial] ............................................................... 3 4. FREQUENCY SPACING .......................................................................................................... 3 5. TECHNICAL REQUIREMENTS ............................................................................................. 4 5.1 Safety Requirements ................................................................................................................... 4 5.2 Transmitting Facilities ............................................................................................................... -
En 303 345 V1.1.0 (2015-07)
Draft ETSI EN 303 345 V1.1.0 (2015-07) HARMONISED EUROPEAN STANDARD Radio Broadcast Receivers; Harmonised Standard covering the essential requirements of article 3.2 of the Directive 2014/53/EU 2 Draft ETSI EN 303 345 V1.1.0 (2015-07) Reference DEN/ERM-TG17-15 Keywords broadcast, digital, radio, receiver ETSI 650 Route des Lucioles F-06921 Sophia Antipolis Cedex - FRANCE Tel.: +33 4 92 94 42 00 Fax: +33 4 93 65 47 16 Siret N° 348 623 562 00017 - NAF 742 C Association à but non lucratif enregistrée à la Sous-Préfecture de Grasse (06) N° 7803/88 Important notice The present document can be downloaded from: http://www.etsi.org/standards-search The present document may be made available in electronic versions and/or in print. The content of any electronic and/or print versions of the present document shall not be modified without the prior written authorization of ETSI. In case of any existing or perceived difference in contents between such versions and/or in print, the only prevailing document is the print of the Portable Document Format (PDF) version kept on a specific network drive within ETSI Secretariat. Users of the present document should be aware that the document may be subject to revision or change of status. Information on the current status of this and other ETSI documents is available at http://portal.etsi.org/tb/status/status.asp If you find errors in the present document, please send your comment to one of the following services: https://portal.etsi.org/People/CommiteeSupportStaff.aspx Copyright Notification No part may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm except as authorized by written permission of ETSI. -
Cisco Broadband Data Book
Broadband Data Book © 2020 Cisco and/or its affiliates. All rights reserved. THE BROADBAND DATABOOK Cable Access Business Unit Systems Engineering Revision 21 August 2019 © 2020 Cisco and/or its affiliates. All rights reserved. 1 Table of Contents Section 1: INTRODUCTION ................................................................................................. 4 Section 2: FREQUENCY CHARTS ........................................................................................ 6 Section 3: RF CHARACTERISTICS OF BROADCAST TV SIGNALS ..................................... 28 Section 4: AMPLIFIER OUTPUT TILT ................................................................................. 37 Section 5: RF TAPS and PASSIVES CHARACTERISTICS ................................................... 42 Section 6: COAXIAL CABLE CHARACTERISTICS .............................................................. 64 Section 7: STANDARD HFC GRAPHIC SYMBOLS ............................................................. 72 Section 8: DTV STANDARDS WORLDWIDE ....................................................................... 80 Section 9: DIGITAL SIGNALS ............................................................................................ 90 Section 10: STANDARD DIGITAL INTERFACES ............................................................... 100 Section 11: DOCSIS SIGNAL CHARACTERISTICS ........................................................... 108 Section 12: FIBER CABLE CHARACTERISTICS ...............................................................