P25 Public Safety Radio
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DMR and Digital Voice Modes
DMR and Digital Voice Modes Presented by N7MOT – Lenny Gemar Amateur radio began with spark gap transmitters, evolving to Morse code and analog voice communications, all originally in the Low Frequency (LF) and High Frequency (HF) bands. Since those early days, many new modes, both analog and digital have been developed. These modes now span from the Very Low Frequencies (VLF) to the Extra High Frequencies (EHF). This presentation is designed to acquaint amateur radio operators with the Digital Mobile Radio or DMR format of digital audio communications, used primarily in the VHF and UHF bands. We’ll briefly discuss the other four Common Air Interface formats (CAI) before diving into the specifics of DMR. DMR and Digital Voice Modes – 8/14/2017 Page 1 of 20 DMR and Digital Voice Modes Digital Voice Modes used in Amateur Radio Interconnected Systems • DDD-D---StarStar ––– Digital Smart Technologies for Amateur Radio (FDMA) • WiresWires----X/SystemX/System Fusion --- Wide-coverage Internet Repeater Enhancement System (FDMA) • NXDN (IDAS/NEXEDGE) ––– Icom/Kenwood Collaboration (FDMA) • DMR ––– Digital Mobile Radio (TDMA 2-TS) • P25 (Phase 1) – Project 25 or APCO P25 (Phase 1 FDMA, Phase 2 TDMA 2-TS) • TETRA --- Terrestrial Trunked Radio, formerly known as Trans-European Trunked Radio (TDMA 4-TS) No known U.S./Canada amateur deployments. DMR and Digital Voice Modes – 8/14/2017 Page 2 of 20 DMR and Digital Voice Modes Digital Voice Modes used in Amateur Radio Interconnected Systems. Repeaters in service as reported by RepeaterBook.com on 8/14/2017 @ 12:00 PDT for the U.S. and Canada. -
Project 25 and Interoperability in Land Mobile Radio
WHITE PAPER 2014 PROJECT 25 AND INTEROPERABILITY IN LAND MOBILE RADIO • The Project 25 standard is unique in that it is a USER driven standard. • Multiple vendors support the P25 standard. • Motorola Solutions equipment interoperates with other vendors equipment. • Customers can and do have a mix of vendor’s equipment. • As technology and customer needs move forward, so too, does P25, which is an open and continually evolving standard. WHITE PAPER PROJECT 25 AND INTEROPERABILITY IN LAND MOBILE RADIO P25: A UNIQUE USER DRIVEN STANDARD Public safety agencies are challenged with keeping communities safe and protecting the lives of their officers, both in normal day-to-day operations as well as when a disaster strikes. Often, it requires agencies to work not only within their jurisdictions or agencies but also across multiple jurisdictions and agencies. Interoperable wireless communications is critical to coordinating joint and immediate response. The public safety community and mission critical land mobile communication providers have been working hand-in-hand for many years and have developed the Project 25 (P25) standards for interoperable mission critical communications. WHAT IS THE PROJECT 25 STANDARD AND WHO MANAGES IT? According to the Project 25 Interest Group (PTIG), “Project 25 is the standard for the design and manufacture of interoperable digital two-way wireless communications products. Developed in North America with state, local and federal representatives and Telecommunications Industry Association (TIA) governance, P25 has gained worldwide acceptance for public safety, security, public service, and commercial applications.” PTIG continues, “The published P25 standards suite is administered by the Telecommunications Industry Association (TIA Mobile and Personal Private Radio Standards Committee TR-8). -
Technical Specification for Land Mobile Radio Equipment
SKMM WTS LMR Rev. 1.01:2007 TECHNICAL SPECIFICATION FOR LAND MOBILE RADIO EQUIPMENT Suruhanjaya Komunikasi dan Multimedia Malaysia Off Pesiaran Multimedia, 63000 Cyberjaya, Selangor Darul Ehsan, Malaysia Copyright of SKMM, 2007 SKMM WTS LMR Rev. 1.01:2007 FOREWORD This Technical Specification was developed under the authority of the Malaysian Communications and Multimedia Commission (SKMM) under the Communications and Multimedia Act 1998 (CMA 98) and the relevant provisions on technical regulation of Part VII of the CMA 98. It is based on recognised International Standards documents. This Technical Specification specifies the specification to conform for approval of telecommunications devices. NOTICE This Specification is subject to review and revision i SKMM WTS LMR Rev. 1.01:2007 CONTENTS Page Foreword................................................................................................................... i 1 Scope........................................................................................................................ 1 2 Normative references ............................................................................................... 1 3 Abbreviations............................................................................................................ 1 4 Requirements ........................................................................................................... 2 4.1 General requirements............................................................................................... 2 4.2 -
Base Station Antenna Selection for LTE Networks
White paper Base station antenna selection for LTE networks Ivy Y. Kelly, Ph.D. technology development strategist, Sprint Martin Zimmerman, Ph.D. Base Station Antenna engineering director, CommScope Ray Butler, MSEE Wireless Network Engineering vice president, CommScope Yi Zheng, Ph.D. Base Station Antenna senior engineer, CommScope December 2017 Contents Executive summary 3 Antenna overview 3 LTE fundamentals 3 Selecting the optimum antenna for your network 5 Conclusion 6 References 6 About the authors 7 commscope.com 2 Executive summary Rapid mobile data growth is requiring the industry to use more sophisticated, higher-capacity access technologies like LTE, which supports many advanced antenna techniques. LTE requires precise containment of RF signals used to transmit mobile data, which can only be accomplished with high-performance antennas. This paper gives an overview of antennas and their application in practical configurations for various types of LTE antenna techniques. Antenna overview Antenna parameters can be separated into two categories, as shown The first LTE specification is part of 3GPP Release 8, which was below. Primary parameters (Table 1) are those specifically mentioned frozen in December 2008. LTE-Advanced generally refers to the LTE when defining the type of antenna used in a particular application. features that are found in Release 10 and beyond. LTE-Advanced For a given antenna vendor, the primary parameters are enough to features include CA, eight-layer DL transmission, four-layer UL identify a specific model that can be used. Secondary parameters transmission, and enhanced inter-cell interference coordination (Table 2) are those that impact performance and can be used to (eICIC).2 Release 10 features are just now being deployed. -
Federal Communications Commission § 90.665
Federal Communications Commission § 90.665 § 90.656 Responsibilities of base sta- where within their authorized MTA, tion licensees of Specialized Mobile provided that: Radio systems. (1) The MTA licensee affords protec- (a) The licensees of base stations that tion, in accordance with § 90.621(b), to provide Specialized Mobile Radio serv- all sites for which applications were ice on a commercial basis of the use of filed on or prior to August 9, 1994. individuals, Federal government agen- (2) The MTA licensee complies with cies, or persons eligible for licensing any rules and international agreements under either subparts B or C of this that restrict use of frequencies identi- part will be responsible for exercising fied in their spectrum block, including effective operational control over all the provisions of § 90.619 relating to mobile and control stations that com- U.S./Canadian and U.S./Mexican border municate with the base station. The areas. base station licensee will be respon- (3) The MTA licensee limits its field sible for assuring that its system is op- strength at any location on the border erated in compliance with all applica- of the MTA service area in accordance ble rules and regulations. with § 90.671 and masks its emissions in accordance with § 90.669. (b) Customers that operate mobile (b) In the event that the authoriza- units on a particular Specialized Mo- tion for a previously authorized co- bile Radio system will be licensed to channel station within the MTA licens- that system. A customer that operates ee’s authorized spectrum block is ter- temporarily on more than one system minated or revoked, the MTA licens- will be deemed, when communicating ee’s co-channel obligations to such sta- with the other system, to be tempo- tion will cease upon deletion of the fa- rarily licensed to the other system and cility from the Commission’s licensing for that temporary period, the licensee record. -
SCS PACTOR 4 (Pdf)
1. Introduction 1 Introduction 1.1 SCS P4dragon, the next Generation Thank you for purchasing the SCS P4dragon DR7800 high performance HF radio modem. SCS modems are the original PACTOR mode modems developed by the people who have created all PACTOR modes. From SCS and SCS representatives, you will receive the best possible support and benefit from the concentrated knowledge of the PACTOR engineers who invented PACTOR. With the introduction of the P4dragon DR7800 modem, SCS also announces PACTOR-4 as a new mode of high performance data transmission over HF frequencies. P4dragon stands for high sophisticated algorithms of communication engineering and high computation power of the PACTOR modems of the fourth generation. 1.2 Packaging list This is a complete list of hardware and software supplied with the SCS P4dragon: • 1 x P4dragon DR7800 High Performance HF-Radio Modem • 1 x Installation Guide • 1 x SCS CD-ROM • 1 x 8 pole DIN cable • 1 x 13 pole DIN cable • 1 x USB cable • 1 x RJ45 Patch cable (with installed “network option”) 1.3 Requirements to operate a PACTOR Modem A transceiver capable of switching between transmit and receive within 20 ms. Most modern transceivers fulfill this requirement. A computer that provides an USB interface or Bluetooth capability. An appropriate terminal program to operate with a USB or Bluetooth virtual COM port. 1.4 About this installation guide This installation manual contains only relevant information about the installation of your SCS P4dragon modem and popular applications like HF email. You can find complete documentation and detailed descriptions of the command set of the P4dragon in the electronic version of the complete manual (PDF format) on the SCS CD-ROM supplied with your modem. -
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. -
Security Weaknesses in the APCO Project 25 Two-Way Radio System
University of Pennsylvania ScholarlyCommons Technical Reports (CIS) Department of Computer & Information Science 11-18-2010 Security Weaknesses in the APCO Project 25 Two-Way Radio System Sandy Clark University of Pennsylvania Perry Metzger University of Pennsylvania Zachary Wasserman University of Pennsylvania Kevin Xu University of Pennsylvania Matthew A. Blaze University of Pennsylvania, [email protected] Follow this and additional works at: https://repository.upenn.edu/cis_reports Part of the Computer Sciences Commons Recommended Citation Sandy Clark, Perry Metzger, Zachary Wasserman, Kevin Xu, and Matthew A. Blaze, "Security Weaknesses in the APCO Project 25 Two-Way Radio System", . November 2010. University of Pennsylvania Department of Computer and Information Science Technical Report No. MS-CIS-10-34. This paper is posted at ScholarlyCommons. https://repository.upenn.edu/cis_reports/944 For more information, please contact [email protected]. Security Weaknesses in the APCO Project 25 Two-Way Radio System Abstract APCO Project 25 (“P25”) is a suite of wireless communications protocols designed for public safety two- way (voice) radio systems. The protocols include security options in which voice and data traffic can be cryptographically protected from eavesdropping. This report analyzes the security of P25 systems against passive and active attacks. We find a number of protocol, implementation, and user interface weaknesses that can leak information to a passive eavesdropper and that facilitate active attacks. In particular, P25 systems are highly susceptible to active traffic analysis attacks, in which radio user locations are surreptitiously determined, and selective jamming attacks, in which an attacker can jam specific kinds of traffic (such as encrypted messages or key management traffic). -
A Software Based APCO Project 25 Data Transmission Base Station for Local Police Headquarters
University of New Hampshire University of New Hampshire Scholars' Repository Master's Theses and Capstones Student Scholarship Fall 2007 A software based APCO Project 25 data transmission base station for local police headquarters Eric Rene Ramsey University of New Hampshire, Durham Follow this and additional works at: https://scholars.unh.edu/thesis Recommended Citation Ramsey, Eric Rene, "A software based APCO Project 25 data transmission base station for local police headquarters" (2007). Master's Theses and Capstones. 308. https://scholars.unh.edu/thesis/308 This Thesis is brought to you for free and open access by the Student Scholarship at University of New Hampshire Scholars' Repository. It has been accepted for inclusion in Master's Theses and Capstones by an authorized administrator of University of New Hampshire Scholars' Repository. For more information, please contact [email protected]. A SOFTWARE BASED APCO PROJECT 25 DATA TRANSMISSION BASE STATION FOR LOCAL POLICE HEADQUARTERS BY ERIC RENE RAMSEY B.S., University of New Hampshire, 2005 THESIS Submitted to the University of New Hampshire in Partial Fulfillment of the Requirements for the Degree of Master of Science in Electrical Engineering September, 2007 Reproduced with permission of the copyright owner. Further reproduction prohibited without permission. UMI Number: 1447900 INFORMATION TO USERS The quality of this reproduction is dependent upon the quality of the copy submitted. Broken or indistinct print, colored or poor quality illustrations and photographs, print bleed-through, substandard margins, and improper alignment can adversely affect reproduction. In the unlikely event that the author did not send a complete manuscript and there are missing pages, these will be noted. -
EFJ Catalog 2004
Sandown Wireless USA 2004 Catalog Mobiles VHF UHF 800 MHz ANALOG/DIGITAL MOBILE RADIO I APCO Project 25 Compatible – Trunked and Conventional5300 SERIES I SMARTNET® and SmartZone® I Analog FM I Encryption For over 80 years, EFJohnson has been at the forefront of the communi- cations industry. Our subscriber radios are used throughout the world by military, police, fire, paramedics, and homeland security profes- sionals. The 5300 Series Analog/ Digital Mobile Radio provides Project 25 Forward Compatibility is provided Field Programmable Capability compatibility along with SMARTNET®/ via a scalable design that allows new provides National Telecommunications SmartZone® capability to meet the features and applications to be inte- and Information Administration (NTIA) needs of federal, state, and local grated into the existing radio platform. agencies the ability to reprogram government users, as well as business, conventional frequencies, CTCSS, DCS, Encrypted Communications for industrial and public safety applications. and talkgroups into the radio’s memory. Switching between SMARTNET/ wideband legacy systems and narrow- ™ 10-Character Alphanumeric Display SmartZone Project 25 and conventional band operation. DES and DES-XL provides a backlit visual display of the analog equipment is simple – just turn enable secure voice communications in radio’s channel or talkgroup on the front the channel knob. wideband channels; Project 25 DES-OFB and AES encryption provide secure of the radio. Tilt viewing angle allows Multiple Protocol Compatibility: communication in narrowband channels. for easy viewing anywhere in the – Project 25 CAI (Common Air vehicle and in any light condition. Interface) enables users to commu- Multiple System Select is an 100-Watt Option allows extra power nicate with other Project 25 compatible advanced feature that enables the user for VHF communication systems. -
GENERAL AVIATION ANTENNAS Clearly Better Performance—At Any Altitude
GENERAL AVIATION ANTENNAS Clearly better performance—at any altitude. RAMI antennas are known for their streamlined aesthetics, great value, and for what really matters when you're navigating at 24,000 feet: reliable performance. By maintaining our focus on antennas and keeping all of our design and manufacturing in house, the improvements will just keep on coming. COM VOR/LOC/GS Transponder/DME Transponder Marker Beacon GPS Antenna Diplexers/Splitter Base Station ELT Ground Vehicular Cable Assemblies COM AV‐10 Frequency: 118–137 MHz The AV‐10 is designed for high‐performance aircraft applications. It exhibits excellent electrical characteristics and incorporates an efficient aerodynamic 4‐bolt mounting base. The antenna essentially matches the styling of the communication antennas currently used on most singles and light twins. The antenna is designed to operate at speeds up to 350 mph and altitudes up to 50,000 ft. It has a drag force of 2.70 lb @ 250 mph. This antenna is a direct replacement for the CI 121. Antenna AV‐17 Frequency: 118–137 MHz The AV‐17 is designed specifically for mounting to the underside of an aircraft, providing an excellent radiation pattern for air‐to‐ground communications. It has a 4‐bolt mounting base and is low in profile. The antenna is designed to operate at speeds up to 350 mph and altitudes up to 50,000 ft. It has a drag force of 0.66 lb @ 250 mph. This antenna is a direct replacement for the CI 122. AV‐529 Frequency: 118–137 MHz The AV‐529 is designed for broadband communications (118‐137 MHz). -
Esco Rfp Draft 20171030
Emergency Communications of Southern Oregon (ECSO) Request for Proposals Public Safety Voice Radio Communications System Functional Specification DUE: 3/18/2020 by 2:00pm PDT Prepared by Federal Engineering, Inc. 10560 Arrowhead Dr. Fairfax, VA 22030 703-359-8200 Emergency Communications of Southern Oregon Public Safety Voice Radio Communications System FINAL Table of Contents 1. Functional Specifications .................................................................................. 6 1.1 Overview .......................................................................................................... 6 1.1.1 Standards and Guidelines................................................................................. 7 1.1.2 Network Security Requirements ....................................................................... 8 1.1.3 Governing Codes and Conflicts ...................................................................... 10 1.2 Integrated Voice and Data Radio System ....................................................... 10 1.2.1 Project 25 Requirements ................................................................................ 10 1.2.2 Core System Features and Capabilities .......................................................... 10 1.2.3 Interoperability Requirements ......................................................................... 13 1.2.4 Coverage ........................................................................................................ 14 1.2.5 Site Selection.................................................................................................