The Evolution of Telco-Constructed Broadband Services for CATV Operators
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Laboratory #1: Transmission Line Characteristics
EEE 171 Lab #1 1 Laboratory #1: Transmission Line Characteristics I. OBJECTIVES Coaxial and twisted pair cables are analyzed. The results of the analyses are experimentally verified using a network analyzer. S11 and S21 are found in addition to the characteristic impedance of the transmission lines. II. INTRODUCTION Two commonly encountered transmission lines are the coaxial and twisted pair cables. Coaxial cables are found in broadcast, cable TV, instrumentation, high-speed computer network, and radar applications, among others. Twisted pair cables are commonly found in telephone, computer interconnect, and other low speed (<10 MHz) applications. There is some discussion on using twisted pair cable for higher bit rate computer networking applications (>10 MHz). The characteristic impedance of a coaxial cable is, L 1 m æ b ö Zo = = lnç ÷, (1) C 2p e è a ø so that e r æ b ö æ b ö Zo = 60ln ç ÷ =138logç ÷. (2) mr è a ø è a ø The dimensions a and b of the coaxial cable are shown in Figure 1. L is the line inductance of a coaxial cable is, m æ b ö L = ln ç ÷ [H/m] . (3) 2p è a ø The capacitor per unit length of a coaxial cable is, 2pe C = [F/m] . (4) b ln ( a) EEE 171 Lab #1 2 e r 2a 2b Figure 1. Coaxial Cable Dimensions The two commonly used coaxial cables are the RG-58/U and RG-59 cables. RG-59/U cables are used in cable TV applications. RG-59/U cables are commonly used as general purpose coaxial cables. -
Product Doc Guide
Engineered Interconnect Products Catalog and Custo:;; Desig:ls s:!:ce 1970 Super Flexible • Lov/ :"'oss• ?::ase Stable Ground-based • Shipboard • A;r • S90ce • Defense Wireless Communications • H:gh ?o'v'!er: • -:-es~ & Measurement FLEXible COaxial Cab."e ~_sse:::bjjes to 40 GHz Product Do~c Guide Flexeo Microwave, Inc. PO Box 115· 17 Karrville Road Port Murray, NJ 07865 Toll Free 800 84 FLEXC Telephone 908-835-1720 Fax 908-835-0002 www.FlexcoMW.com flexeD Microwave, Inc. PO Box 115 ° 17 Karrville Road Port Murray, NJ 07865 Telephone 908 850°5800 Fax 908 85005250 ~~~ Engineered Interconnect Products THE CTC EXPERIENCE Introducing a new member to our Test line, it will fulfill all your needs for a flexible, shielded, phase stable, durable Test Cable. The CTS is a version of the NTC with heavy armor. The electrical specs are the same but, what a difference. Superior torque and crush resistance, the design incorporates a stainless steel conduit covered with a stainless steel braid rendering it a virtually indestructible assembly. We actually drove a solid wheeled fork truck across it. This cable is ideal for Production testing or applications where there is excessive twisting and contorting imposed by the process or the operator. The trade off is the min. bend radius: NTC = 1.0 in. CTC = 1.5 in. If RFI/EMI is a concern, the effective shielding under dynamic conditions is in excess of -110 dBc. Flexco Microwave, Inc. PO Box 115, 17 Karrville Road Port Murray, NJ 07865 Telephone 800 84 FLEXC Fax 908-835-0002 E-mail [email protected] ~~~~1;~ Engineered Interconnect Products http://www.FlexcoMW.com Product Data Guide Table of Contents 4 NEW Super Low Loss Designs! Flexco'spatented outer conductor with an expanded PTFEdielectric FC105 to 26.5 8Hz 1A FCL02 to 188Hz 1B FC102 & FCL05 Call Factory VANA Cables for Precision test & measurement Rock Solid Phase & Amplitude. -
LP-C400 400 Series 50 Ohm Ultra Low Losses Coaxial Cable
Wireless - Coaxial LP-C400 400 Series 50 Ohm Ultra low losses LPC400_SS_ENB01I Characteristics Antenna Cable Runs to Base Stations, Access Points (AP), Bridges or CPE. Cabling between any WiFi or WiMax antenna and the associated equipment. Indoor or Outdoor Use. Direct Bury or Tower Use. Land Mobile Radio (LMR). Local Multi-Point Distribution LP-C400 400 Series 50 Ohm System (LMDS). Ultra low losses Coaxial Cable. Multi-Channel Multi-Point Distribution Service (MMDS). This is an ultra-low-loss 50 ohm coaxial cable ideal for RF deployment. This 400-Series cable offers equivalent or better characteristics and performance than other existing industry cables such as Commscope WBC-400*, Times Wireless Local Loop (WLL). Microwave LMR-400*, Andrew CNT-400*, etc. This cable size is the most demanded and widely used coaxial cable in the wireless industry. Personal Communication Systems (PCS). The LP-C400 is our superior Lower Loss-per-meter 400-Series coaxial cable GPS. offered. It is manufactured with a polyethylene (PE) jacket which is UV resistant, and is built to withstand harsh temperatures, grease, oil, chemicals, SCADA. salt water and abrasion, offering a 15 year plus lifespan. The LP-C400 with a tough PE jacket is especially suited for long life outdoor use. Ham Radio. If your application is direct burial, our LP-C400 is also the best choice with its polyethylene jacket (PE). Other jacket materials, such as polyvinyl chloride (PVC), TPE, etc. are not well suited for direct burial. While PE jackets do not offer the same flexibility as other materials, this is the only material that any experienced engineer will recommend for a direct burial application for long term survivability underground. -
AT&T Debt Information
AT&T Inc. and Subsidiary Debt Detail - September 30, 2010 This chart shows the principal amount of AT&T Inc.'s and its subsidiaries' outstanding long-term debt issues as of the date above. AT&T intends to update this chart quarterly after filing its Form 10-Q or Form 10-K with the Securities and Exchange Commission. Outstanding Long-term Notes and Debentures Amount Outstanding at Unconditional Guarantee Entity (Original Issuer) Maturity Coupon Maturity Date Current Portion Long-term Portion Total by AT&T Inc. SBC Communications Inc. $1,000,000,000 5.300% 11/15/2010 $1,000,000,000 - $1,000,000,000 AT&T Wireless Services, Inc. $3,000,000,000 7.875% 3/1/2011 $3,000,000,000 - $3,000,000,000 SBC Communications Inc. $1,250,000,000 6.250% 3/15/2011 $1,250,000,000 - $1,250,000,000 BellSouth Corporation $1,000,000,000 4.295% 4/26/2021 (a) $1,000,000,000 - $1,000,000,000 Yes BellSouth Telecommunications, Inc. $152,555,337 6.300% 12/15/2015 $24,012,263 $128,543,074 $152,555,337 Ameritech Capital Funding Corporation $59,802,300 9.100% 6/1/2016 $7,299,540 $52,502,760 $59,802,300 Various $112,492,335 Various Various $103,734,725 $8,757,610 $112,492,335 BellSouth Corporation $1,000,000,000 6.000% 10/15/2011 - $1,000,000,000 $1,000,000,000 AT&T Corp. $1,500,000,000 7.300% 11/15/2011 - $1,500,000,000 $1,500,000,000 Yes Cingular Wireless LLC $750,000,000 6.500% 12/15/2011 - $750,000,000 $750,000,000 SBC Communications Inc. -
Analysis and Study the Performance of Coaxial Cable Passed on Different Dielectrics
International Journal of Applied Engineering Research ISSN 0973-4562 Volume 13, Number 3 (2018) pp. 1664-1669 © Research India Publications. http://www.ripublication.com Analysis and Study the Performance of Coaxial Cable Passed On Different Dielectrics Baydaa Hadi Saoudi Nursing Department, Technical Institute of Samawa, Iraq. Email:[email protected] Abstract Coaxial cable virtually keeps all the electromagnetic wave to the area inside it. Due to the mechanical properties, the In this research will discuss the more effective parameter is coaxial cable can be bent or twisted, also it can be strapped to the type of dielectric mediums (Polyimide, Polyethylene, and conductive supports without inducing unwanted currents in Teflon). the cable. The speed(S) of electromagnetic waves propagating This analysis of the performance related to dielectric mediums through a dielectric medium is given by: with respect to: Dielectric losses and its effect upon cable properties, dielectrics versus characteristic impedance, and the attenuation in the coaxial line for different dielectrics. The C: the velocity of light in a vacuum analysis depends on a simple mathematical model for coaxial cables to test the influence of the insulators (Dielectrics) µr: Magnetic relative permeability of dielectric medium performance. The simulation of this work is done using εr: Dielectric relative permittivity. Matlab/Simulink and presents the results according to the construction of the coaxial cable with its physical properties, The most common dielectric material is polyethylene, it has the types of losses in both the cable and the dielectric, and the good electrical properties, and it is cheap and flexible. role of dielectric in the propagation of electromagnetic waves. -
Powerline and Coax Adapters
Powerline and Coax Adapters Powerline Ethernet Adapters Powerline Wireless Extenders HomePNA Ethernet Bridges Powerline and Coax Adapters Powerline and Coax Adapters Introduction Introduction ZyXEL Powerline and Coax Adapters Powerline Home Network NSA325 2-Bay Power Plus Turn Your Power Lines or Coaxial Cables into a Smart Home Network Media Server NWD2205 Wireless N ZyXEL’s broad line of Powerline adapters allow you to use your existing power outlets to create a fast and secure home network. You won’t need USB Adapter Study Room to install new cables, which saves you time, money and effort. Your Powerline network will enable you to share your Internet connection as well PLA4231 as all your digital media content, so you can enjoy Broadband content anywhere in your home. In fact, Powerline extends your network to areas 500 Mbps Powerline PLA4211 500 Mbps Mini Powerline even wireless signals may not reach. Wireless N Extender STB2101-HD Pass-Thru Ethernet Adapter HD IP Set-Top Box Game Wired LAN Adapter Product Portfolio Console Internet Blu-ray HDTV xDSL/Cable Player Modem PLA4201 PLA4225 500 Mbps 500 Mbps Mini Powerline Powerline 4-Port Power Line NBG5615 Ethernet Adapter Gigabit Switch Living Room Wireless N Ethernet Simultaneous AV/HDMI Cable Dual-Band Wireless HD Powerline PLA4231 N750 Media Router Extender 500 Mbps Powerline Wireless N Extender Power Line Benefits of Wired LAN Adapter 500 Mbps Mini Powerline Plug-and-Play Design Oce Room Ethernet Adapter 500 Mbps Mini Powerline Pass-Thru Simply plug a ZyXEL Powerline Adapter into an outlet near your Ethernet Adapter IEEE 1901 router and plug your router into it. -
Introduction to Transmission Lines
INTRODUCTION TO TRANSMISSION LINES DR. FARID FARAHMAND FALL 2012 http://www.empowermentresources.com/stop_cointelpro/electromagnetic_warfare.htm RF Design ¨ In RF circuits RF energy has to be transported ¤ Transmission lines ¤ Connectors ¨ As we transport energy energy gets lost ¤ Resistance of the wire à lossy cable ¤ Radiation (the energy radiates out of the wire à the wire is acting as an antenna We look at transmission lines and their characteristics Transmission Lines A transmission line connects a generator to a load – a two port network Transmission lines include (physical construction): • Two parallel wires • Coaxial cable • Microstrip line • Optical fiber • Waveguide (very high frequencies, very low loss, expensive) • etc. Types of Transmission Modes TEM (Transverse Electromagnetic): Electric and magnetic fields are orthogonal to one another, and both are orthogonal to direction of propagation Example of TEM Mode Electric Field E is radial Magnetic Field H is azimuthal Propagation is into the page Examples of Connectors Connectors include (physical construction): BNC UHF Type N Etc. Connectors and TLs must match! Transmission Line Effects Delayed by l/c At t = 0, and for f = 1 kHz , if: (1) l = 5 cm: (2) But if l = 20 km: Properties of Materials (constructive parameters) Remember: Homogenous medium is medium with constant properties ¨ Electric Permittivity ε (F/m) ¤ The higher it is, less E is induced, lower polarization ¤ For air: 8.85xE-12 F/m; ε = εo * εr ¨ Magnetic Permeability µ (H/m) Relative permittivity and permeability -
Tab 23 – Miscellaneous Charges / Enhanced Services Table of Contents
Tab 23 – Miscellaneous Charges / Enhanced Services Table of Contents Overview..................................................................................................... 2 Detailed Process ........................................................................................... 2 Requesting Billing of Miscellaneous Charges/Enhanced Services ........................ 2 Record Processing ...................................................................................... 3 Taxes ....................................................................................................... 4 Implementation Time Frames....................................................................... 4 Processing Requirements ............................................................................... 4 PROMOTIONAL CREDIT/REBATES.................................................................... 5 Description of Service ................................................................................. 5 Formatting of EMI Record ............................................................................ 5 Bill Format - Promotional Credits .................................................................. 6 Exhibit I ...................................................................................................... 7 MISC CHARGE/ENHANCED SERVICE BILLING REQUEST FORM .......................... 7 Billing and Collections Product Binder Section 23 Miscellaneous Charges/Enhanced Services Page 2 of 7 CA, NV January 2006 MISCELLANEOUS CHARGES/ENHANCED -
Coaxial Cables
Coaxial Cables Why use Coaxial cables? Practically everything in our tech-driven society uses high-frequency very delicate electrical currents for communicating with each other. Transmission of these high-frequency signals through conventional pair of wires depend on the resistance, inductance and capacitance (or reactance) of the wires utilized. Conventional pair of wires carrying these signals are exposed to external interference (from nearby signal carrying wires, running machines and lightening) and get distorted, termed as frying, cross talk and static noises. Conventional pair of wires also have a high "attenuation", that is, the signals get weaker as they travel along the wires for long- distance, and hence amplifiers are necessary to boost it up every few miles to maintain the signal above the noise level. It is possible to transmit more than one signal of different bandwidths, simultaneously on a pair of wires by “frequency multiplexing”. Conventional pair of wires have a relatively low bandwidth, i.e. have a low upper limit of frequency for proper transmission. Hence to properly transmit these high-frequency signals, the medium should be able to deal with the complex interaction of ‘reactance’ of the medium and also have less external interference, low attenuation and high bandwidth. For this purpose coaxial cables have been invented and deployed for the transmission of these AC or high frequency signals or currents. Coaxial Cables : 50 Ohm and 75 Ohm. A coaxial cable is comprised of three main components. In the center of the coaxial cable is what is known as the center conductor. It is either a solid wire or stranded wires and is typically a mixture of aluminum and copper. -
The American Telephone and Telegraph Company Divestiture: Background, Provisions, and Restructuring
Report No. 84-58 E I -. <I?....*- ".YII. -n, -- THE AMERICAN TELEPHONE AND TELEGRAPH COMPANY DIVESTITURE: BACKGROUND, PROVISIONS, AND RESTRUCTURING b Y Angele A. Gilroy Specialist in Industrial Organization Economics Division COLLECTION WKI HEKN !CNTUCKY LIBRARY April 11, 1984 11 i :::A L.'~~-l.ii.e makes jucn research available. without parti- ::;I.. in lr:m\ !orrns inc!uding studies. reports. cornpila- ;,)I!., I!:<?\[>. :md l:a~kqroi~ndhrietings. Cpon request. CRS .. ., :i ~ !>!r::z:rrir.e.;in ann1~-zingle+slative proposals and -tl:..b. :!nd in s>w;sinq the possible effects of these proposals . < :!I irie.The Ser~ice'ssenior specialists and ii,:c( r :iil.,;ii ?is are also at-aiiable for personal consultations ;xi-ir :.t>.;!?ecri\-elieid.; t~f'expertise. ABSTRACT On January 1, 1984, The American Telephone and Telegraph Company (AT&T) di- vested itself of a major portion of its organizational structure and functions. Under the post-divestiture environment the once fully-integrated Bell System is now reorganized into the "new" AT&T and seven Ladependent regional 5olding ?om- panies -- American Information Technologies Corp., 3ell Atlantic Corp., 3ell- South Corp., NYNEX Corp., Pacific Telesis Group., Southwestern Bell Corp., and U.S. West, Inc. The following analysis provides an overview of the pre- and post-divestiture organizational structure and details the evolution of the anti- trust action which resulted in this divestiture. CONTENTS ABSTRACT ................................................................ iii INTRODUCTION ............................................................ 1 1 . BELL SYSTEM CORPORATE REORGANIZATION .............................. 3 A . Predivestiture Bell System Corporate Structure ................ 3 B . Divested Operating Company Structure .......................... 5 C . Post-Divestiture AThT Organizational Structure ................ 7 11. -
ONN 6 Eng Codelist Only Webversion.Indd
6-DEVICE UNIVERSAL REMOTE Model: 100020904 CODELIST Need help? We’re here for you every day 7 a.m. – 9 p.m. CST. Give us a call at 1-888-516-2630 Please visit the website “www.onn-support.com” to get more information. 1 TABLE OF CONTENTS CODELIST TV 3 STREAM 5 STB 5 AUDIO SOUNDBAR 21 BLURAY DVD 22 2 CODELIST TV TV EQD 2014, 2087, 2277 EQD Auria 2014, 2087, 2277 Acer 4143 ESA 1595, 1963 Admiral 3879 eTec 2397 Affinity 3717, 3870, 3577, Exorvision 3953 3716 Favi 3382 Aiwa 1362 Fisher 1362 Akai 1675 Fluid 2964 Akura 1687 Fujimaro 1687 AOC 3720, 2691, 1365, Funai 1595, 1864, 1394, 2014, 2087 1963 Apex Digital 2397, 4347, 4350 Furrion 3332, 4093 Ario 2397 Gateway 1755, 1756 Asus 3340 GE 1447 Asustek 3340 General Electric 1447 Atvio 3638, 3636, 3879 GFM 1886, 1963, 1864 Atyme 2746 GPX 3980, 3977 Audiosonic 1675 Haier 2309, 1749, 1748, Audiovox 1564, 1276, 1769, 3382, 1753, 3429, 2121 2293, 4398, 2214 Auria 4748, 2087, 2014, Hannspree 1348, 2786 2277 Hisense 3519, 4740, 4618, Avera 2397, 2049 2183, 5185, 1660, Avol 2735, 4367, 3382, 3382, 4398 3118, 1709 Hitachi 1643, 4398, 5102, Axen 1709 4455, 3382, 0679 Axess 3593 Hiteker 3118 BenQ 1756 HKPro 3879, 2434 Blu:sens 2735 Hyundai 4618 Bolva 2397 iLo 1463, 1394 Broksonic 1892 Insignia 2049, 1780, 4487, Calypso 4748 3227, 1564, 1641, Champion 1362 2184, 1892, 1423, Changhong 4629 1660, 1963, 1463 Coby 3627 iSymphony 3382, 3429, 3118, Commercial Solutions 1447 3094 Conia 1687 JVC 1774, 1601, 3393, Contex 4053, 4280 2321, 2271, 4107, Craig 3423 4398, 5182, 4105, Crosley 3115 4053, 1670, 1892, Curtis -
FCC), October 14-31, 2019
Description of document: All Broadcasting and Mass Media Informal Complaints received by the Federal Communications Commission (FCC), October 14-31, 2019 Requested date: 01-November-2019 Release date: 26-November-2019-2019 Posted date: 27-July-2020 Source of document: Freedom of Information Act Request Federal Communications Commission 445 12th Street, S.W., Room 1-A836 Washington, D.C. 20554 The governmentattic.org web site (“the site”) is a First Amendment free speech web site, and is noncommercial and free to the public. The site and materials made available on the site, such as this file, are for reference only. The governmentattic.org web site and its principals have made every effort to make this information as complete and as accurate as possible, however, there may be mistakes and omissions, both typographical and in content. The governmentattic.org web site and its principals shall have neither liability nor responsibility to any person or entity with respect to any loss or damage caused, or alleged to have been caused, directly or indirectly, by the information provided on the governmentattic.org web site or in this file. The public records published on the site were obtained from government agencies using proper legal channels. Each document is identified as to the source. Any concerns about the contents of the site should be directed to the agency originating the document in question. GovernmentAttic.org is not responsible for the contents of documents published on the website. Federal Communications Commission Consumer & Governmental Affairs Bureau Washington, D.C. 20554 tfltJ:J November 26, 2019 FOIA Nos.