Radio Broadcasting Equipment Catalog
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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. -
Digital Audio Broadcasting : Principles and Applications of Digital Radio
Digital Audio Broadcasting Principles and Applications of Digital Radio Second Edition Edited by WOLFGANG HOEG Berlin, Germany and THOMAS LAUTERBACH University of Applied Sciences, Nuernberg, Germany Digital Audio Broadcasting Digital Audio Broadcasting Principles and Applications of Digital Radio Second Edition Edited by WOLFGANG HOEG Berlin, Germany and THOMAS LAUTERBACH University of Applied Sciences, Nuernberg, Germany Copyright ß 2003 John Wiley & Sons Ltd, The Atrium, Southern Gate, Chichester, West Sussex PO19 8SQ, England Telephone (þ44) 1243 779777 Email (for orders and customer service enquiries): [email protected] Visit our Home Page on www.wileyeurope.com or www.wiley.com All Rights Reserved. No part of this publication may be reproduced, stored in a retrieval system or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, scanning or otherwise, except under the terms of the Copyright, Designs and Patents Act 1988 or under the terms of a licence issued by the Copyright Licensing Agency Ltd, 90 Tottenham Court Road, London W1T 4LP, UK, without the permission in writing of the Publisher. Requests to the Publisher should be addressed to the Permissions Department, John Wiley & Sons Ltd, The Atrium, Southern Gate, Chichester, West Sussex PO19 8SQ, England, or emailed to [email protected], or faxed to (þ44) 1243 770571. This publication is designed to provide accurate and authoritative information in regard to the subject matter covered. It is sold on the understanding that the Publisher is not engaged in rendering professional services. If professional advice or other expert assistance is required, the services of a competent professional should be sought. -
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 ............................................................................................................... -
Implementation Considerations for the Introduction and Transition to Digital Terrestrial Sound and Multimedia Broadcasting
Report ITU-R BS.2384-0 (07/2015) Implementation considerations for the introduction and transition to digital terrestrial sound and multimedia broadcasting BS Series Broadcasting service (sound) ii Rep. ITU-R BS.2384-0 Foreword The role of the Radiocommunication Sector is to ensure the rational, equitable, efficient and economical use of the radio- frequency spectrum by all radiocommunication services, including satellite services, and carry out studies without limit of frequency range on the basis of which Recommendations are adopted. The regulatory and policy functions of the Radiocommunication Sector are performed by World and Regional Radiocommunication Conferences and Radiocommunication Assemblies supported by Study Groups. Policy on Intellectual Property Right (IPR) ITU-R policy on IPR is described in the Common Patent Policy for ITU-T/ITU-R/ISO/IEC referenced in Annex 1 of Resolution ITU-R 1. Forms to be used for the submission of patent statements and licensing declarations by patent holders are available from http://www.itu.int/ITU-R/go/patents/en where the Guidelines for Implementation of the Common Patent Policy for ITU-T/ITU-R/ISO/IEC and the ITU-R patent information database can also be found. Series of ITU-R Reports (Also available online at http://www.itu.int/publ/R-REP/en) Series Title BO Satellite delivery BR Recording for production, archival and play-out; film for television BS Broadcasting service (sound) BT Broadcasting service (television) F Fixed service M Mobile, radiodetermination, amateur and related satellite services P Radiowave propagation RA Radio astronomy RS Remote sensing systems S Fixed-satellite service SA Space applications and meteorology SF Frequency sharing and coordination between fixed-satellite and fixed service systems SM Spectrum management Note: This ITU-R Report was approved in English by the Study Group under the procedure detailed in Resolution ITU-R 1. -
Digital Radio Power Increase
Before the FEDERAL COMMUNICATIONS COMMISSION Washington, D.C. 20554 In the Matter of ) ) Digital Audio Broadcasting Systems ) MM Docket No. 99-325 And Their Impact On the Terrestrial Radio ) Broadcast Service ) ) COMMENTS OF THE NATIONAL ASSOCIATION OF BROADCASTERS The National Association of Broadcasters (NAB)1 hereby responds to the Public Notice2 soliciting public comment on recent filings in the digital audio broadcasting proceeding. By this Notice, the Media Bureau of the Federal Communications Commission (FCC) is seeking comment on three filings: a request by 18 radio broadcasters and the four largest manufacturers of broadcast transmission equipment (Joint Parties) to permit a voluntary increase in digital power for FM digital broadcasters, up to a maximum of 10 percent of a station’s authorized analog power;3 a technical report by iBiquity Digital Corporation (iBiquity) examining the benefits of this proposed increase in digital power, the compatibility with analog broadcasting and the potential interference effects 1 The National Association of Broadcasters is a trade association that advocates on behalf of more than 8,300 free, local radio and television stations and also broadcast networks before Congress, the Federal Communications Commission and the Courts. 2 Public Notice, DA 08-2340, MM Docket No. 99-325, October 23, 2008. 3 Joint Parties Ex Parte letter, filed in MM Docket No. 99-325, June 10, 2008 (Joint Parties request). resulting from the proposed increase;4 and a study by National Public Radio (NPR) on Corporation for Public Broadcasting-supported research on digital radio coverage and interference.5 As discussed below, the benefits of permitting FM broadcasters to optionally increase the power in their digital signal are compelling. -
Shortwave-Listening
Listen to global news in the making! Monitor transmissions from Voice of America. Radio Canada, Radio Netherlands. Radio Moscow and many others. Learn how radio waves tra- vel. Get information on popular shortwave bands and licensing for a Itypes of equipment. Radio Listener's Guide by William Barden, Jr. Radio Shack A Division of Tandy Corporation First Edition First Printing-1987 Copyright01987 by William Barden Jr., Inc. Printed in the United States of America. All rights reserved. Reproduction or use, without express permission, of editorial or pictorial content, in any manner, is prohibited. No patent liability is assumed with respect to the use of the information contained herein. Library of Congress Catalog Card Number: XX-XXXXX Radio Listener's Guide T Table of Contents Section I World of the BBC, Radio Moscow, Police Calls, Aircraft Communications, and Hams Chapter 1. Radio—What Is It' Generating Radio Waves—The Radio Spectrum—Radio Equipment and Frequencies—Band Use—How Radio Waves Travel—Radio Licenses and Listening—Subbands and Channels—Radio Equipment Chapter 2. Types of Broadcasting Voice Communication—Code Transmission—Teleprinter Transmission— Facsimile Transmission—Slow-Scan Television—Fast-Scan Television — Repeaters— Portable Phones—Satellite Reception—Transmitting Power Chapter 3. Shortwave Broadcasters Frequency Assignments—The European Long-Wave Band—The AM Broadcast Band—Tropical Broadcasting-49- and 41-Meter Bands-31- and 25-Meter Bands—Above the 25-Meter Band—A Typical Listening Session—Logging Foreign Stations—Foreign Broadcast lnformation—QSL Cards Chapter 4. Other Types of Broadcasting in the Lower Frequencies Transmissions Below the AM Broadcast Band—The AM Broadcast Band— Portable Phones—Marine Transmissions—CW Transmissions—Radio Teleprinter—Single Sideband—Time and Frequency Signals—Weather Maps by Facsimile—Citizen's Band Frequencies—The Russian Woodpecker—Pirate and Clandestine Stations Chapter 5. -
Kidsdictionary.Pdf
Access Charges: This is a fee charged by local phone companies for use of their networks. Amplitude Modulation (AM) that's the "AM" Band on your Radio: A signaling method that varies the amplitude of the carrier frequencies to send information. The carrier frequency would be like 910 (kHz) AM on your AM dial. Your radio antenna receives this signal and then decodes it and plays the song. Analog Signal: A signaling method that modifies the frequency by amplifying the strength of the signal or varying the frequency of a radio transmission to convey information. Bandwidth The amount of data passing through a connection over a given time. It is usually measured in bps (bits-per- second) or Mbps. Broadband Broadband refers to telecommunication in which a wide band of frequencies is available to transmit information. More services can be provided through broadband in the same way as more lanes on a highway allow more cars to travel on it at the same time. Broadcast To transmit (a radio or television program) for public or general use. In other words, send out or communicate, especially by radio or television. Cable A strong, large-diameter, heavy steel or fiber rope. The word history of cable derives from Middle English, from Old North French, from Late Latin capulum, lasso, from Latin capere, meaning to seize. Calling Party Pays A billing method in which a wireless phone caller pays only for making calls and not for receiving them. The standard American billing system requires wireless phone customers to pay for all calls made and received on a wireless phone. -
750 Review Insert
The Eton Elite 750 is much more than just a fancy-looking boom-box shortwave receiver, reports WB6NOA, who listened to all it has to offer, including longwave, shortwave, the AM and FM broadcast bands, and the VHF air band. CQ Reviews: Eton Elite 750 Shortwave Receiver BY GORDON WEST,* WB6NOA s ham operators, we know not to pre-judge a radio by just how it Alooks, or how many buttons and meters it may have on the face. Like many of you, I have a collection of no- name bargain mail-order portable shortwave (SW) receivers, but few can hold a candle to those from name-brand manufacturers. Now, this monster- sized Eton receiver is hitting the mar- ket in grand style. The Eton Elite 750 is major-sized multi-mode receiver, fun for a radio enthusiast wanting to tune in what’s out there from 100 kHz to 30 MHz, plus the AM and FM broadcast bands and AM air-band reception. The Eton name may be unfamiliar to you, and the 750 looks a lot like a pre- vious radio from Grundig. Actually, the two companies have a relationship that spans 35 years, as explained by Eton CEO and Chairman Esmail Amid- The large speaker makes the Eton Elite 750 a great poolside or beach enter- Hozour. “From our initial partnership tainment radio, too! Plenty of audio output, enough to also power a personal with Max Grundig in 1979, Eton has car- music player that can plug in. ried on Grundig’s 75+ year legacy in developing the best-in-class world band we bring new and exciting shortwave non-directional radio beacons (NDBs), radios.” Esmail continued, “Eton’s dedi- products to the market each year.” Navtex, 630-meter ham radio CW bea- cation to design and innovation spans cons, and various government stations partnerships with Drake to ensure high- Exploring the Elite 750 lurking down here. -
Audio Level Equalization of Television Sound, Broadcast FM and National Weather Service FM Radio Signals
Europaisches Patentamt European Patent Office © Publication number: 0 512 374 A1 Office europeen des brevets EUROPEAN PATENT APPLICATION © Application number: 92107242.7 int. CI 5= H04N 5/60, H04B 1/16 @ Date of filing: 28.04.92 © Priority: 06.05.91 US 695803 F-92400 Courbevoie(FR) @ Date of publication of application: @ Inventor: Kim, Yong Hyun 11.11.92 Bulletin 92/46 Blk 127, Pasir Ris St.11, 04-395 Singapore 1851(SG) © Designated Contracting States: DE FR GB IT 0 Representative: Einsel, Robert, Dipl.-lng. © Applicant: THOMSON CONSUMER Deutsche Thomson-Brandt GmbH Patent- ELECTRONICS S.A. und Lizenzabteilung Gottinger Chaussee 76 9, Place des Vosges, La Defense 5 W-3000 Hannover 91 (DE) © Audio level equalization of television sound, broadcast FM and national weather service FM radio signals. © A television receiver includes a single tuner (102) for tuning both television channels and broadcast FM stations. The tuner (102) serves as the first conversion stage of a double conversion FM receiver, a separate mixer-oscillator (180) converts the FM radio sound IF to 4.5 MHz for processing in the television receiver's sound channel. A single discriminator circuit (130) is employed for tuning FM radio signals having a first deviation, such as broadcast FM radio signals, and FM signals having a second deviation (i.e., the television sound signals), and FM radio signals having a third deviation, such as signals of an information service, such as in the United States, the National Weather Service. Circuitry (136,137) for amplifying the output signal of the discriminator circuit exhibits a first gain, and a first volume control range when amplifying FM signals having the first deviation, exhibits a second gain and the first volume control range, when amplifying FM signals having the second deviation, and exhibits a second gain, and a second volume control range when amplifying FM signals having the third deviation. -
I Would to Thank the Commission for Issuing This Notice of Proposed
Before the Federal Communications Commission Washington, D.C. 20554 In the matter of ) ) Revitalization of the AM Radio Service ) MB Docket No. 13-249 To: The Commission COMMENT BY BRIAN J. HENRY I hold a Lifetime FCC General Class Radiotelephone license as well as an Amateur Advanced Class license and have been a broadcast engineer since the late 1970’s. I have constructed, repaired, and maintained countless AM broadcast stations over the course of my career and I am a former AM broadcast station licensee (KLLK-Willits, California). I am the proprietor of Henry Communications, a company that I founded in 1978, to provide technical services to the radio and television broadcast industry. I currently do not have an interest in any broadcast property. I am participating in this proceeding because I am passionate about AM broadcasting and I want to help revitalize it. I. Introduction I would like to thank The Commission for issuing this Notice of Proposed Rulemaking as it attempts to mitigate some of its concerns regarding the long-term viability of the AM broadcast band. The AM broadcast industry needs your help and guidance. Every ten years or so “AM Improvement” becomes a priority in the broadcast industry. It is always the same. There needs to be further deregulation. I would like to suggest that deregulation has gone far enough and that a certain amount of re-regulation and stricter enforcement of the existing laws could be helpful in the effort to revitalize AM. I am concerned that the proposals that The Commission is considering may ultimately result in a degradation of AM quality and will not be an enhancement to the service. -
ETS 300 750 TELECOMMUNICATION May 1996 STANDARD
DRAFT EUROPEAN pr ETS 300 750 TELECOMMUNICATION May 1996 STANDARD Source: EBU/CENELEC/ETSI JTC Reference: DE/JTC-00VHFTXHU ICS: 33.060.20 Key words: broadcasting, radio, transmitter, FM, VHF, audio European Broadcasting Union Union Européenne de Radio-Télévision EBU UER Radio broadcasting systems; Very High Frequency (VHF), frequency modulated, sound broadcasting transmitters in the 66 to 73 MHz band ETSI European Telecommunications Standards Institute ETSI Secretariat Postal address: F-06921 Sophia Antipolis CEDEX - FRANCE Office address: 650 Route des Lucioles - Sophia Antipolis - Valbonne - FRANCE X.400: c=fr, a=atlas, p=etsi, s=secretariat - Internet: [email protected] Tel.: +33 92 94 42 00 - Fax: +33 93 65 47 16 Copyright Notification: No part may be reproduced except as authorized by written permission. The copyright and the * foregoing restriction extend to reproduction in all media. © European Telecommunications Standards Institute 1996. © European Broadcasting Union 1996. All rights reserved. Page 2 Draft prETS 300 750: May 1996 Whilst every care has been taken in the preparation and publication of this document, errors in content, typographical or otherwise, may occur. If you have comments concerning its accuracy, please write to "ETSI Editing and Committee Support Dept." at the address shown on the title page. Page 3 Draft prETS 300 750: May 1996 Contents Foreword .......................................................................................................................................................5 1 Scope -
1 Before the Federal Communications Commission Washington, D.C
Before the Federal Communications Commission Washington, D.C. 20554 In the Matter of RM No. 9395 Amendment of Part 73 of the Commission's Rules to Permit the Introduction of Digital Audio Broadcasting in the AM and FM Broadcast Services ) GROUP COMMENTS FILED ON BEHALF OF THE ORGANIZATIONS AND INDIVIDUALS LISTED BELOW. IDENTIFICATION OF PARTIES My name is Ted M. Coopman and I am a resident of Santa Cruz, CA. I have a Master of Science in Mass Communications from San Jose State University (1995) and have been researching broadcasting since 1993. I have presented numerous papers on this subject at professional conventions held by the National Communication Association, the American Communication Association, the Western Communication Association, and the Southern States Communication Association. I have also had a manuscript published in the Journal of Broadcasting and Electronic Media (Vol. 43, No. 4, Fall 1999) and operate a website(www.roguecom.com/rogueradio) where I house my research on broadcasting. I am also the co-founder of Rogue Communications, a multi-service consulting and research company. In these capacities, I have become concerned with the state of radio broadcasting in the United States. Our current free radio service is threatened by media consolidation, the loss of diversity, localism, and the increased use of FM spectrum for ancillary services to the detriment of music and voice broadcasting. I have drafted his Group Comment to present the most basic issues and needs expressed by a diverse cross- section of individuals and organizations concerned with the health of radio. We, the undersigned organizations and individuals, representative of a wide spectrum of advocates for a democratic, community service oriented, free AM-FM broadcast service, strongly believe that the NPRM concerning the adoption of In Band On Channel (IBOC) terrestrial Digital Audio Broadcasting (DAB) is ill-conceived.