DOCSLIB.ORG

Uwìälu @Aiswww@

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Uwìälu @Aiswww@ Nov. 27, 1951 s. s. H|l_|_v 2,576,115 ARRANCEMENT ECR TRANSMIITINC ELECTRIC sICNALs CCCURYINC A wIDE FREQUENCY BAND CvER NARRow BAND CIRCUITS Filed Feb. 4, 1948 Nîä,_ , Emmaüzzwru www@ @waisuwìälu Patented Nov. 27, 1951 ' 2,576,115 UNITED STATES A,lnßxrlszN'r oFFlcE 2,516,115 ARRANGEMENT FOR TRANSMITTING ELEC TRIC SIGNALS OCCUPYING A WIDE FRE QUENCY BAND OVERI NARROW BAND CIR CUITS i Stuart Seymour Hill, London, England, assigner to International Standard Electric Corpora tion, New York, N. Y., a corporation of Dela Application February 4, 1948, Serial No. 6,316 In Great Britain February 7, 1947 13 Claims.` (Cl. 17H4) 2 The present invention relates to electric signal of one or more sections to the frequency range. transmission systems of the kind in which signals passed by the corresponding channel and meansl occupying a relative wide frequency band are for transmitting the frequency shifted sections. transmitted over two or more circuits each of over the respective channels, characterised in­­ which is capable of transmitting only a relative “ this, that the frequency shifting means in thev ly narrow frequency band. case of at least one section comprises two succes The invention has its principal application to sive frequency changes, one of which employs a broadcasting circuits. fixed carrier frequency and the other a carrier It is frequently necessary to send broadcast ma frequency which is adjusted to a value deter terial to the studios by telephone line. Some 10 mined by the cut-off frequency of the correspond times special broadcast channels designed for a ing channel. j wide frequency band with low noise and distor The invention will be described with reference tion are available, or ordinary open wire lines can to the accompanying drawings, Figs. 1 and 2 ofl perhaps be specially equalised for a given occa which respectively show block schematic cir sion. Very often, however, only narrow band 15 cuit diagrams of the transmitting and receiving commercial telephone channels will be available. arrangements of a system according to the inven Such channels may, for example, pass a band from tion. Terminals l and 2 of Fig. 1 are intended about 300 to 3,000 cycles per second, while the to be connected respectively to terminals 3 and broadcast band which it is desired to transmit 4 of Fig. 2 by separate telephone or other rela may extend from about 100 to 6,000 cycles per 20 tively narrow band circuits or lines. The system second. to be described will be assumed to be designed It has therefore already been proposed to split to meet a particular series of requirements, but4 the wide broadcast band into two sections, which it should be understood that it may be adapted after the necessary frequency shifts are trans for other requirements. None of the frequency mitted separately over two different commercial ` ranges given below are intended to set limitations or other narrow band telephone circuits, and are to the system, and are only `quoted for the sake then recombined at the receiving end after the of example, and may be extended Without any necessary frequency transfers. dimculty. It has been found, however, that in the ar It will be assumed that the broadcast band rangements so far proposed, the transmitter and 30 which it is desired to cover extends from 100 to receiver circuits have _to be specially designed for 6,000 cycles per second, and that the commercial the particular band-width passed by the telephone telephone channels cover a band from about 300 channels which will be used, because the receiver tow'3,000 cycles per second. It will further be` frequency shifts necessary for the proper re assumed that the commercial telephone circuits COmbïIling of the two parts of the band depend es likely to be available may have upper cut-oli? fre on this band-width. In other words, if the cir quencies which may lie anywhere between about cuits are designed for telephone channels with a 2,700 and 3,200 cycles per second. The upper given band-width, they cannot be satisfactorily cut-off frequency of the commercial circuits will used with channels having a different band ` be denoted by fc. width. At the transmitting end of the system the pro . It is therefore the principal object of the pres gramme signals covering the wide band are ampli ent invention to overcome this difficulty, and fied in a preamplifier 5 ,and are then passed to provide an arrangement which can be easily through a clean-up> low pass filter 6 which re adapted for use with telephone channels of vari moves those upper frequencies which the sys ous band-widths. ' 45 tem cannot be expected to transmit. This filter This object is achieved according to the inven will therefore limit the band betweeny 100 and tion by providing an arrangement for transmit about 6,300 cycles per second. The limited band ting an electric signal occupying a relatively wide of frequencies is then supplied in parallel to upper frequency band over a plurality of communication and lower channels through a conventional hy channels each of which is capable of passing only 50 b_rid `coil network l, the place of the balancing a relatively narrow `frequency band, comprising impedance being taken by a synchronising oscil means for dividing the signal band into a plu lator 8 to be described later. This hybrid coil rality of sections of widths corresponding respec network prevents appreciable interaction between tively to the widths of the bands passed by the the two channels. The band is then applied in said channels, means for frequency shifting each the lower channel through'the attenuating pad I 2,576,115 4 Vto a modulator l0 supplied with a carrier wave of might also appear at the output of the second frequency 12 kc./s. from an oscillator Il, the modulator i9 as a band from 3.2 to 6 kc./s. Only lower sideband extending from 5.7_Jtou11191 lic/s.M a Vsmall portion of this 4band is however present being selectedflbyaïñlteíf lf2 which also iatte'nuatesj inthe firstv .lower sideban’diat` ßìl'fito 8.8 läd/s. frequencies up to about’7.5 kc./s. foi1` the purpose The effectof'the` two modulations ’in the upper ' of minimising programme leak through the modu ,channel _has therefore been to remove that por lator. The pad 9 may introduce an attenuai àv"tion of the original programme band which is tion of about 12 decibels, andiisïprovid'ed: in’order dealt with bythe-lower channel, and to shift the to ensure that both channels? are .operated at'fY Yupper~ffrequencies ofthe band downwards by about the same level. In the programme- band»` 2.7 kc/s., the diiîerencebetween the frequencies the middle and lower frequencies predominate, of the two oscillators. 1 At the receiving terminal shown in Fig. 2, the and so without the pad 9 thelflower-,channel would . be at a much higher level thanthenpperchannel Y, ' Aband ofjfrequencies of the lower channel which and there would then be dangerïofzthexintroduc arrive overtheïline connected to terminal ¿l are tion of excessive noise into the upper channel. applied to a first .demodulator 2l supplied with a carrier frequency of 9.35 kc./s. from an oscillator The lower sideband from the‘filter l2 is .applied . 22. " N'ñlter 23»removes the upper side-band and to a second modulator s liedw'ith >al-.c'arrier . upp " l "programme leak, and delivers the lower sideband wave of 12.2 kc./s. from an oscillator I4 the out put of .which is applied through an amplifier 2.15V toA a.second demodulator 24 supplied with a car rier frequency from an oscillator 25 at 9.15 lio/s. to the commercial channel connected to terminal 20 The lower sideband from the demodulator. 2K» 2;.twhichrchannel is îassumed-.to cut-off at about coversïthe‘range lûll'to 3,600'cycles per‘second of 3.2 A»kd/s; nand. `so rselects4 part; `of- . the lower :side band. {The‘highest frequency? cnf-:the sideband the original signal band.. Besides the unwanted appliedï to thesecond modulator .-l 3 (11.9. -kc./s.) upper sideband (a) which covers the Vrange 15 to 25 1749 kcJ/s.; there will be a‘sm'all progra-mmev leal; appears ¿asl-1.300 cycles-in the Jfinally* transformed . (b) inthe range' 5.85 to 8;75 koi/sand also those band. The ­highest frequencyof` the originalwide . frequencies (c). immediately above 3.2 kc./s. input-:band f which1is passed» through thelower. which have not been effectively removed bythe channel is A3À,kc./s.,f `and _thisappears as 9 .kc./S._, filters 6 and l2. 4 Y after. thefi-lrst modulation; 1and.3.2’l<c•./s. .after 'the Theìfrequencies (a) and (b) are-removed by a second. j(Frequencies.above 3.2.~kc./s. will be vat 30 tenuated by the commercial channel,y though suitable low pass filter 26 in the output circuit in which the >bands from! the lower and upper there v mayebe some.. transmission upto about channels arerecombined. The frequencies (c) 4.7 ks.¿/s., correspondingv to.4.5¿kc./s..in the orig may beat vwithV frequencies` legitimately trans inal input -ba/nd. .~ Thus « there `isscme transmis» mitted over the upper channel. An additional ' sionon the frequencies between 3.l and 4.5 lcd/s. 35 simple lowpass ñlter section 21‘is therefore in ofthe signal band. `Howeverfany.frequencies in cludedin the lower branch after the second de the >range 3.2110 4.7 kc./s.
Load more

Recommended publications
  • 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
    [Show full text]
  • 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.
    [Show full text]
  • SBE Comments to FINAL AM Improvement Docket
    Before the FEDERAL COMMUNICATIONS COMMISSION Washington, DC 20554 In the Matter of ) ) Revitalization of the AM Radio Service ) MB Docket No. 13-153 To: The Commission COMMENTS OF THE SOCIETY OF BROADCAST ENGINEERS, INCORPORATED 1. The Society of Broadcast Engineers, Incorporated (“SBE”)1 respectfully submits its Comments in response to portions of the Commission’s Notice of Proposed Rulemaking, 13-139, 28 FCC Rcd. 15221, released October 31, 2013 in the above-captioned proceeding (the “Notice”).2 The Notice proposes “to introduce a number of possible improvements to the … AM… radio service and the rules pertaining to AM broadcasting.” The Commission also seeks “to revitalize further the AM band by identifying ways to enhance AM broadcast quality and proposing changes to our technical rules that would enable AM stations to improve their service.” The Commission proposes to “help AM broadcasters better serve the public, thereby advancing the Commission’s fundamental goals of localism, competition, and diversity in broadcast media.” SBE applauds this effort and offers the following comments on some of the technical issues raised in this proceeding. Specifically, SBE offers its comments on four issues that will provide both immediate and long-term relief to AM broadcast licensees: 1 SBE is the national association of broadcast engineers and technical communications professionals, with more than 5,000 members worldwide. 2 The Notice of Proposed Rulemaking was published in the Federal Register November 20, 2013. See, 78 Fed. Reg. 69629. 1
    [Show full text]
  • Short Wave Radio
    Short Wave Radio A Working Electronic Sculpture Honoring the History of Radio Please note: This radio picks up short wave stations, but for your best satisfaction it will require a little time and attention, both to learn how to operate it and to appreciate the principles and history that it embodies. You’ll find bare-bones instructions on this page and more details inside the notebook. To turn the radio on, rotate the volume control clockwise until you hear a click, then set its dial to 3 or 4. If the radio was not already turned on, you’ll have to wait about 30 seconds for its vacuum tubes to warm up. •Put on the headphones. •Set the radio’s other controls as follows: •RF Gain: Fully clockwise. •Preselector: 1 •Tuning: 20 •Fine Tuning: 5.0 (This works like a clock, only with ten “hours” instead of 12) •Regeneration: 7 (Or advance slowly clockwise from zero until just after the point you hear a louder hiss in the headphones.) •Volume: Set to a comfortable level, usually about 4. Now, slowly adjust the TUNING control back and forth looking for squeals that indicate signals. (The shortwave broadcast band with 31 meter wavelength is located between about 10 and 30 on the dial.) You’ll should find a few unless ionospheric conditions are particularly poor on this day. Leave the TUNING control set on a loud squeal. Then slowly adjust the FINE TUNING to “zero beat.” (You’ll notice as you move the dial across a signal, it starts with a high-pitched note, moving down to a low-pitched or zero note, then back up to high pitch again.
    [Show full text]
  • Program and System Information Protocol Implementation Guidelines for Broadcasters
    ATSC Recommended Practice: Program and System Information Protocol Implementation Guidelines for Broadcasters Document A/69:2009, 25 December 2009 Advanced Television Systems Committee, Inc. 1776 K Street, N.W., Suite 200 Washington, D.C. 20006 Advanced Television Systems Committee Document A/69:2009 The Advanced Television Systems Committee, Inc., is an international, non-profit organization developing voluntary standards for digital television. The ATSC member organizations represent the broadcast, broadcast equipment, motion picture, consumer electronics, computer, cable, satellite, and semiconductor industries. Specifically, ATSC is working to coordinate television standards among different communications media focusing on digital television, interactive systems, and broadband multimedia communications. ATSC is also developing digital television implementation strategies and presenting educational seminars on the ATSC standards. ATSC was formed in 1982 by the member organizations of the Joint Committee on InterSociety Coordination (JCIC): the Electronic Industries Association (EIA), the Institute of Electrical and Electronic Engineers (IEEE), the National Association of Broadcasters (NAB), the National Cable Telecommunications Association (NCTA), and the Society of Motion Picture and Television Engineers (SMPTE). Currently, there are approximately 140 members representing the broadcast, broadcast equipment, motion picture, consumer electronics, computer, cable, satellite, and semiconductor industries. ATSC Digital TV Standards include
    [Show full text]
  • 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.
    [Show full text]
  • 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.
    [Show full text]
  • Spectrum/Frequency Requirements for Bands Allocated to Broadcasting on a Primary Basis
    Report ITU-R BT.2387-0 (07/2015) Spectrum/frequency requirements for bands allocated to broadcasting on a primary basis BT Series Broadcasting service (television) ii Rep. ITU-R BT.2387-0 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.
    [Show full text]
  • Recommendations on Issues Related to Digital Radio Broadcasting in India 1St February, 2018 Mahanagar Doorsanchar Bhawan Jawahar
    Recommendations on Issues related to Digital Radio Broadcasting in India 1st February, 2018 Mahanagar Doorsanchar Bhawan Jawahar Lal Nehru Marg New Delhi-110002 Website: www.trai.gov.in i Contents INTRODUCTION ................................................................................................... 1 CHAPTER 2: Digital Radio Broadcasting Technologies and International Scenario .............................................................................................................. 5 CHAPTER 3: Issues Related to Digitization of FM Radio Broadcasting .............. 15 CHAPTER 4: Summary of Recommendations .................................................... 40 ii CHAPTER 1 INTRODUCTION 1.1 Radio remains an integral part of India‟s rich culture, social and economic landscape. Radio broadcasting1 is one of the most popular and affordable means for mass communication, largely owing to its wide coverage, low set up costs, terminal portability and affordability. 1.2 At present, analog terrestrial radio broadcast in India is carried out in Medium Wave (MW) (526–1606 KHz), Short Wave (SW) (6–22 MHz), and VHF-II (88–108 MHz) spectrum bands. VHF-II band is popularly known as FM band due to deployment of Frequency Modulation (FM) technology in this band. AIR - the public service broadcaster - has established 467 radio stations encompassing 662 radio transmitters, which include 140 MW, 48 SW, and 474 FM transmitters for providing radio broadcasting services2. It also provides overseas broadcasts services for its listeners across the world. 1.3 Until 2000, AIR was the sole radio broadcaster in the country. In the year 2000, looking at the changing market dynamics, the government took an initiative to open the FM radio broadcast for private sector participation. In Phase-I of FM Radio, the government auctioned 108 FM radio channels in 40 cities. Out of these, only 21 FM radio channels became operational and subsequently migrated to Phase-II in 2005.
    [Show full text]
  • Analysis, Simulation, and Implementation of Block Transform OFDM Xiaoliang Xue University of Wollongong
    University of Wollongong Research Online University of Wollongong Thesis Collection University of Wollongong Thesis Collections 2011 Analysis, simulation, and implementation of block transform OFDM Xiaoliang Xue University of Wollongong Recommended Citation Xue, Xiaoliang, Analysis, simulation, and implementation of block transform OFDM, Master of Engineering - Research thesis, School of Electrical, Computer and Telecommunications Engineering, University of Wollongong, 2011. http://ro.uow.edu.au/theses/3437 Research Online is the open access institutional repository for the University of Wollongong. For further information contact Manager Repository Services: [email protected]. Analysis, Simulation, and Implementation of Block Transform OFDM A thesis submitted in partial fulfilment of the requirements for the award of the degree Master of Engineering by Research from UNIVERSITY OF WOLLONGONG by Xiaoliang Xue School of Electrical, Computer and Telecommunications Engineering October 2011 Statement of Originality I, Xiaoliang Xue, declare that this thesis, submitted in partial fulfillment of the requirements for the award of Master of Engineering - Research, in the School of Electrical, Computer and Telecommunications Engineering, University of Wollongong, is wholly my own work unless otherwise referenced or acknowledged. The document has not been submitted for qualifications at any other academic institution. Xiaoliang Xue 28 March, 2011 List of Abbreviations 1G First-generation 2G Second-generation 3G Third-generation 4G Fourth-generation
    [Show full text]
  • Facing the FCC Spectrum Incentive
    Corporation for Public Broadcasting Facing the Spectrum Incentive Auction and Repacking Process A Guide for Public Television Stations and Governing Boards 7/8/2014 Facing the Incentive Auction and Repacking Process — July 8, 2014 Contents 1 Introduction ............................................................................................................................. 3 2 Background ............................................................................................................................. 4 2.1 Spectrum Management, Usage and Regulation ............................................................... 4 2.2 The Attractiveness of Broadcast Spectrum ...................................................................... 6 2.3 Public Media’s Role ......................................................................................................... 7 2.4 Broadband Explained ..................................................................................................... 11 2.5 The National Broadband Plan ........................................................................................ 12 2.6 The “Spectrum Act” ....................................................................................................... 13 2.6.1 Reverse Auction.. .................................................................................................... 13 2.6.2 Repacking.. ............................................................................................................. 14 2.6.3 Forward Auction.. ..................................................................................................
    [Show full text]
  • Radio and Tv Broadcast Antennas
    BROADCAST ANTENNAS RADIO AND TV Summary 1 Front Cover 2 Summary 3 Introduction 4 Channels & Frequencies 5 Circular Polarization Tuned MY-Heliax FM Radio MY-Ciclone MY-Syren 6 Circular Polarization Broadband MY-TetraQ MY-TetraQ2 MY-TetraQ3 7 Circular Polarization High Power Panel MY-4DC 8 Vertical Polarization Dipole MY- Yinx- FM MY-FMPL MY-FMPL2 9 Vertical Polarization MY-GM MY-GM2Y MY-GM3Y 10 Vertical Polarization High Power Panel MY-BII Panel 11 Radio FM Splitters 12 Radio FM Filters 13 Radio FM Combiners 14 MY-1130 DAB MY-1150 MY-1180/90 15 MY-1140 MY-1170 MY-1160 16 DAB Splitters 17 DAB Filters 18 DAB Combiners 19 MY-BI Panel TV B I 20 MY-BIII 2D Panel TV BIII MY-BIII 4D Panel 21 2D BIII D Panel BIII yagi 22 Splitters BIII Filters BIII 23 Combiners BIII 24 MY-BIV/V 4 D Panel CI UHF BIV/V TV MY-BIV/V 4 D Panel 25 MY-YINX-N UHF 26 Splitters UHF 27 Filters UHF 28 Combiner UHF 29 MY-DVB Panel DVB 30 Splitters DVB 31 Filters DVB 32 Combiner DVB 33 Accessories Rigid Line Accesories Adapters Coaxial Connectors Directional Couplers 34 Address 2 Summary MOYANO is since 1960 the pioneer Company in the Spanish Radio Frequencies technology, basing its development in the design and construction of Antennas, Power devices and Telecommunication Towers. MOYANO is today the company that offers to their clients the best solutions in technology and Infrastructure for Broadcast Networks. The technological development based in the applied engineering facility is fully supported by a production group as well as installtion and maintenance division.
    [Show full text]