1 Introduction to Digital Mobile Radio (DMR) By John S. Burningham, W2XAB May 2015
2 The Amateur DMR Networks Over 1,275 registered repeaters. Over 14,738 registered radios. The Networks are divided by infrastructure Mototrbo (Motorola Solutions) Most common around the world, about 95%. Hytera
3 Major Mototrbo Networks Wide Area Networks DMR-MARC (Motorola Amateur Radio Club) Radio registration Network Pin Maps DCI (Digital Communications Interconnect) DMR-NA (DMR Core Talkgroup Server Project) Regional Groups Typically associated with one or more of the wide area networks which supply Talk Group interconnections.
5 What is DMR? Digital Mobile Radio (DMR) was developed by the European Telecommunications Standards Institute (ETSI) and is used worldwide by professional mobile radio users. DMR is divided into three tiers. Tier I Tier II Tier III
6 Tier I Tier I is a single channel specification originally for the European unlicensed dpmr446 service. It is a single channel FDMA 6.25 khz bandwidth; the standard supports peer-to-peer (mode 1), repeater (mode 2) and linked repeater (mode 3) configurations. The use of the Tier I standard has been expanded into radios for use in other than the unlicensed dpmr446 service.
7 Tier II (The Standard for Amateur Networks) Tier II is 2-slot TDMA 12.5 khz peer-topeer and repeater mode specification, resulting in a spectrum efficiency of 6.25 khz per channel. Each time slot can be either voice and/or data depending upon system needs. IP Site Connect (IPSC) for interconnecting repeaters over the Internet is vendor specific and not part of the ETSI standards at this time. Most amateur radio implementations of DMR are using voice on both time slots.
8 Tier III Tier III builds upon Tier II, adding trunking operation involving multiple repeaters at a single site. Not all manufacturers trunking implementation is Tier III compatible. Vender specific protocols have expanded the trunking to multiple site operations.
9 Vocoder The current implementation of DMR utilizes the DSVI AMBE+2 vocoder by agreement of the manufactures; it is not specified in the ESTI standard. Most of the radio manufacturers have implemented the vocoder in licensed software. The forward error correction in the AMBR+2 this is an improvement of the voice quality of older vocoders such as used by D-Star.
10 DMR 2-Slot TDMA DMR Tier II/Tier III occupies a 12.5 khz bandwidth with two channels sharing using Time-Division Multiple Access (TDMA), this results in spectrum efficiency of 6.25 khz per channel. Comparing the spectrum efficiency of DMR to a wideband analog FM, DMR only uses 25% of the bandwidth per talk channel. Each channel can carry either voice and/or data depending on system design. The two time slots are called Time Slot 1 (TS1) and Time Slot 2 (TS2).
11 DMR 2-Slot TDMA For the amateur, this means one repeater allows two separate channels at the same time. Currently most amateur DMR repeater system implementations utilize both channels for voice and some limited text messaging. Typically one channel (time slot) is used for wide-area and the second is local and regional talk groups. For repeater operators, a single two-slot TDMA repeater offers a significant savings over two standalone repeaters to obtain two separate communication channels as only one repeater, one duplexer, and one antenna system is required.
12 DMR 2-Slot TDMA The two-slot TDMA implemented in DMR uplinks (portable/mobile to repeater) uses a 30-ms window for each time slot, the 30-ms is further divided into a ms frame and a 2.5-ms gap. This means when transmitting, your transmitter is only turned on for 27.5ms every 60ms resulting is extended battery life for portables. The DMR repeater (downlink) transmits a continuous data stream even if only one timeslot is being used; the 2.5-ms uplink gap is replaced with a CACH burst (Common Announcement Channel) that is used for channel management and low speed signaling.
13 The Frame The 27.5-ms frame consists of a total of 264-bits; 108-bit payload, 48-bit SYNC or embedded signaling, and a second 108-bit payload for a total of 216-bits of payload per frame. The vocoder must compress 60-ms of audio with FEC (forward error correction) into 216-bits of data for transmission. The 2.5ms-gap is used for guard time to allow PA ramping and propagation delay.
14 DMR Terminology Talk Groups Zones Color Codes Code Plugs Scanning Roaming Simplex Admit Criteria
15 Talk Groups (TG) Talk Groups (TG) are a way for groups of users to share a time slot (one-to-many) without distracting and disrupting other users of the time slot. It should be noted that only one talk group can be using a time slot at a time. If your radio is not programmed to listen to a talk group, you will not hear that talk group s traffic.
16 Zones User DMR radios support Zones, a Zone is just a grouping of individual channels. Some model radios may limit the number of channels per Zone and the number of Zones allowed.
17 Color Codes (CC) DMR repeaters use Color Codes (CC) much like analog repeaters use CTCSS or DCS. To access a repeater you must program your radio to use the same CC as the repeater. There are 16 different CCs (CC0-CC15). The factory default is CC1. The use of Color Codes is not optional on DMR systems. If your Color Code is not set correctly, you will not be able to access the repeater. The only real purpose of using different Color Codes is when multiple repeaters operating on the same frequency have overlapping coverage areas.
18 Code Plugs A code plug is simply a radio s configuration file. Using a manufacturer s programming software you configure the channels and operating parameters of a radio, this file is uploaded to the radio. Building a code plug can take many hours, especially if you want to program hundreds of channels. The code plug can also contain a Contact List of Radio IDs, call signs, and names to be displayed. You can find copies of configured code plugs on the web for different models of radio; check out the different Yahoo DMR groups. All DMR radios support a limited number of entries in the Contact List.
19 Scanning All DMR radios allow you to configuring scanning of channels. Remember, you will only hear traffic on the frequency, time slot, and talk groups you have programmed on a channel. I typically scan both time slots on my local repeater and a simplex channel I use. You can also scan analog channels mixed with the digital channels. Scanning will decrease the battery life on your radio.
20 Roaming Roaming is NOT scanning, roaming is similar but different. Roaming is designed to have your radio automatically select a better channel if your current channel s Receive Signal Strength Indicator (RSSI) falls below a defined level as you move throughout the coverage area of a group of repeaters that carry the same talk groups on the same time slots. Roaming is not supported on all DMR radios, check your owner s manual or manufacturer website to see if roaming is supported; in some radios it may be an additional cost option.
21 Roaming & Beaconing To fully support roaming, a group of repeaters must be programmed to BEACON a short announcement at regular intervals to allow roaming clients to identify possible candidates. Roaming does not select the best candidate, it selects the first candidate that exceeds a specified signal level.
22 Simplex In the professional side of DMR, Talk-Around refers to operating simplex on a repeater output channel this allows a direct communication while still being able to hear the repeater this allows users to directly contact other users listening on the repeater output frequency who may be local and out of range of the repeater. Amateurs typically use dedicated simplex channels so as not to interfere with repeater traffic.
23 Simplex The amateur DMR community has published a list of recommended simplex frequencies: UHF 1) ) ) (most common in NA) 4) (common in non-na countries) VHF 1) ) Use TG99 / CC1 / TS1 /Admit Criteria: Always / In Call Criteria: TX or Always
24 Admit Criteria The Admit Criteria determines when your radio is allowed to transmit. The recommended setting for repeater channels is Color Code Free this configures your radio to be polite to your own digital system. You should configure your In Call Criteria to Follow Admit Criteria. Simplex channels should be configured as Always for both Admit Criteria and Always or Follow TX for In Call Criteria.
25 Accessing a DMR Repeater When you want to access a DMR repeater, you must have the frequency, color code, TS and TG set correctly. When you key your transceiver, you send a signal to the repeater and the repeater responds back to acknowledge you can transmit your message. If you do not receive the repeater s acknowledgement your radio will stop transmitting and you will hear a negative confirmation tone. This is one of the advantages of TDMA, allowing bidirectional communications between user and the repeater when transmitting. The repeater can also signal your radio to stop transmitting if there is contention on the network because more than one station is transmitting at a time.
26 IPSC and Bridges IP Site Connect (IPSC) is a vendor specific repeater feature offered by some manufacturers. Allows a fully-meshed network of a limited number of repeater (15 is considered the maximum). One repeater or bridge is the Master, the other are Peers. The Master s duty is to inform connected Peers of how to communicate with other Peers. Bridges are used to interconnect IPSC networks. It is common in the amateur networks for each repeater to be directly connected to a bridge instead of utilizing a fully-meshed IPSC network; this reduces bandwidth requirements for the repeater sites.
27 Bridges for Mototrbo Ravennet Systems (Developer) Rayfield Communications c-bridge Bridgecom Systems MV-DMR Linux Based Available in hardware and virtual configurations Defacto Standard in the Americas SmartPTT (Russian Product) Windows based Common in Europe
28 User Radios There are many sources of DMR radios, both new and used. As of this date, you can t walk in to an amateur radio store and buy a DMR radio but that could soon change. All the DMR radios are professional (commercial) radios for the greater professional market. If you want to purchase a new radio you can easily find a dealer, some are ham friendly and will offer reasonable discounts to hams; check with your local DMR users or the websites for further information.
29 Buying a Radio New or Used VHF, UHF, or 900 MHz Programming Software Programming Cable Number of Channels Display or Non-Display DTMF Keypad GPS Bluetooth Analog capable Mobile or Portable
30 External Amplifiers Most external amateur amplifiers will NOT work with DMR user radios! It must be designed to switch fast enough for the TDMA on/off keying of the transmitter. If you need more power than a handheld, consider purchasing a mobile and NOT using an external amplifier connected to a handheld. Not all handheld are designed for connection of an external antenna.
31 Suppliers of DMR Radios Motorola Solutions $$-$$$$ Hytera $$-$$$$ Vertex Standard $$-$$$ Connect Systems $ BeiFeng Telecom Technologies (BFDX) $$-$$$ Kenwood $$-$$$ Note: Kenwood has already released DMR radios in other parts of the world, when they will arrive (if ever) in the US market has not yet been announced.
32 Good Operating Practice Examples of good operating practice for initial calls on the DMR networks include: This is W2XAB monitoring Southeast Regional N5ITU this is W9JW on North America This is NØYNT for a radio check on Local WB8FXJ this is WB8SCT on Ohio State Spend most of your time listening, not talking. Be a good neighbor and don t hog the network. Move off the wide area Talk Groups for long QSOs. Don t over ID! Help the new users develop good operating practices. Promote DMR to your friends.
33 Amateur Radio Guide To DMR For further information please read the Amateur Radio Guide to Digital Mobile Radio (DMR) Available free online at:
34 New Mototrbo SLR-5700 Repeater (Scheduled to be released June 2015)
The DMR Basics & No Frills What is DMR? Digital vs. Analog Time Slots [TDMA] & Talk Groups Zones Color Codes Code Plugs Scanning and Roaming Simplex Admit Criteria Repeater Access Basic Programming Digital
What is DMR? Digital Mobile Radio (DMR) was developed by the European Telecommunications Standards Institute (ETSI) and is used worldwide by professional mobile radio users. [http://www.dmrassociation.org]
DMR (Digital Mobile Radio) Presentation by: Ken Dorsey KA8OAD Special Thanks to: Jason Johnston KC5HWB Kent Weeks WA5YXS Larry Shafron - N5LS Originally designed for the commercial market Has advantages
Digital Mobile Radio (DMR) & PNW System Primer Andy Ruschak, KK7TR Background ETSI (European) standard for Digital Mobile Radio - Open Standard - Ratified in 2005 Three (3) Tiers, I, II, III - Tier I Unlicensed
Digital Mobile Radio (DMR) & PNW System Primer Andy Ruschak, KK7TR DMR Overview Background ETSI (European) standard for Digital Mobile Radio - Open Standard - Ratified in 2005 Three (3) Tiers, I, II, III
DIGITAL MOBILE RADIO THE VERY BASICS The DMR Difference History Audio Quality Spectrum Efficiency The Local and Worldwide Network Repeater vs. Hotspot Code Plugs DMR today in our area Brief History DMR
Digital Mobile Radio Demystified By Don Trynor, VA3XFT November 3, 2015 Agenda Digital Mobile Radio Overview Ham Radio Usage of DMR How to Get Started With DMR 2 What is Digital Mobile Radio? Co o ly k
What Is DMR (Digital Mobile Radio) Presentation By: Jimmy Bennett - W4MF Special Thanks to: Ken Dorsey KA8OAD Jason Johnston KC5HWB Kent Weeks WA5YXS Larry Shafron - N5LS What is Digital Mobile Radio (DMR)?
DMR: Introduction to a New D/V Mode for AMATEUR Radio HamSCI 2018-02 Kai Chen, K2TRW Presentation Summary Digital Mobile Radio An ETSI published global standard Many manufacturers Longer battery life Supports
DMR: A NEW MODE FOR AMATEUR DIGITAL RADIO Slides for Nashua Area Radio Club Feb. 2, 2016 By Bill Barber, NE1B Digital Mobile Radio An ETSI published worldwide standard Over a DOZEN manufacturers of radios
INTRODUCTION TO DMR ARRL/TAPR DCC 2017 ST. LOUIS GEORGE SCHINDLER, WBØIIS What is DMR? DMR stands for Digital g Mobile Radio Based on ETSI (European) Standard, developed for commercial mobile radio Also
1 DMR radio AN INTRODUCTION 7/21/201 7 2 What is DMR? DMR stands for Digital Mobile Radio Based off commercial radio standard developed by Motorola, then known as MotoTRBO Motorola placed technology into
Introduction to Amateur DMR Andrew Beard KC3HPS February 1st, 2017 Disclaimer I am not an expert I passed my Technician exam in August 2016 I purchased by first DMR radio in October 2016 Everything I say
Product TechnicalReview Mark by Mark J. Wilson, Spencer, K1RO, WA8SME email@example.com BridgeCom Systems D-500 70-Centimeter DMR and Analog Handheld Transceiver This solid radio offers an easy entry point
Rochester Amateur Radio Association, Inc. DMR Mike Moore KC2NM Steve Verzulli KA1CNF Sept. 8, 2018 What is DMR? Digital Mobile Radio is an open digital mobile radio standard. Often referred to as MOTOTRBO.
14 September 2012 Introduction to DMR and the DMR Association www.taitradio.com Bill Fillman Vice President and Principal Consultant Tait Communications Learning Objectives: 1. Know what DMR and ETSI stand
Digital Voice Modes Compare and Contrast of the Mainstream Digital Voice Modes Silvercreek Amateur Radio Association January 2019 Meeting About N8CD John Wagner, N8CD Been a ham since 1978 Do digital things
Understanding and testing of DMR standard Roger Kane Managing Director, Vicom Australia @CommsConnectAus#comms2014 Presentation Title: Understanding and Testing DMR Speaker: Roger Kane @CommsConnectAus
MOTOROLA MOTOTRBO CAPACITY PLUS RADIO SYSTEM DESCRIPTION P a g e 1 North Lawrence Community Schools October 1, 2012 P a g e 2 Table of Contents TABLE OF CONTENTS... 2 GENERAL SYSTEM OVERVIEW... 3 REQUIRED
Just What is this DMR Mode you ve been hearing about? HOPEFULLY AFTER THIS SHORT PRESENTATION YOU WILL HAVE A BETTER HANDLE ON JUST WHAT DMR IS AS IT IS USED BY THE AMATEUR RADIO COMMUNITY. Without getting
KB7APU repeater system MotoTRBO/Digital Mobile Radio information. How Field SAR Coms Work How Repeaters Work First DMR HAM radio system in the State of Oregon What is DMR (Digital Mobile Radio)? How to
White Paper Whitepaper 4 Level FSK/FDMA 6.25 khz Technology New dpmr Whitepaper 4 Level FSK/FDMA 6.25 khz Technology 1.4 dpmr Association 2017 dpmr digital Private Mobile Radio 6.25 khz Technology dpmr
Version 1.0 February 2009 Frequently Asked Questions Page 1 of 16 Disclaimer This document has been prepared by Icom Incorporated (hereinafter Icom) as a reference document for questions about the Icom
DMR Simulcast and DMR Trunking upgradable IP Multi-site Connection Digital telephone Interconnection RDAC Remote Management Software Intelligent Super Repeater RD982i-S RD982i-S Intelligent Super Repeater
NXDN versus DMR a comparison of protocols JVCKENWOOD USA CORPORATION D.E. Wingo, Sr. Product Manager WHITE PAPER Contents Executive Summary 1 NXDN and DMR Standards 3 A Basic DMR Overview 7 DMR Tier II
SafeMobile Radio Configuration SafeMobile offers a world of wireless applications that help organizations better manage their mobile assets, fleet and personnel. For more information, see www.safemobile.com.
Introduction to Digital Voice and DMR Presented at the San Diego Hamfest David Hull, KC6N October 6, 2018 Contents Introduction to Digital Voice Digital Voice Radio Implementation Characteristics of DV
Digital Introduction North America Channel Partner Module v2 121410 VERTEX STANDARD is registered in the US Patent & Trademark Office. All other product or service names are the property of their respective
ADVANCED SOLUTIONS FOR SMART COMMUNICATIONS IP2AIR Bridge VHF/HF IP2AIR is an advanced solution for professional two-way radios developed by ICOM FRANCE. The IP2AIR solutions enhances your experience of
RD988 Super Version Intelligent Super Repeater DMR Simulcast and DMR Trunking upgradable IP Multi-site Connection Digital telephone Interconnection RDAC Remote Management Software RD988 Super Version Intelligent
Version 8.8 Linked Capacity Plus February 2016 Table of Contents Table of Contents Linked Capacity Plus MOTOTRBO Repeater Programming 2 4 MOTOTRBO Radio Programming 14 MNIS and DDMS Client Configuration
DMR Trunking Pro Hytera Open Standard DMR Trunking Portfolio ETSI DMR Open Standard Technology IP Based Digital Trunked System Infrastructure Versatile Services & Expandable Systems www.hytera.us Overview
February 9, 2018 Steve Smith KM4CJ If you are an amateur radio operator then I am sure you have heard of one of the digital modes: D-Star, DMR or Fusion. You may be wanting to dip your toes into the digital
CELETRA DMR Korean Telecommunications Technology Association member since 2014 European ETSI standard DMR Association Category-1 member since 2014 Australian Radio Communications Industry Association member
Version 9.1 SmartPTT Enterprise December 2016 Table of Contents Table of Contents 1.1 Introduction 3 1.2 Installation of the SmartPTT software 3 1.3 General SmartPTT Radioserver Configuration 7 1.4 SmartPTT
CT DMR Networks 101 August 2017 Sma version2..0 8/2017 SMA version 2.1 3/2018 KC1SA SMA version 2.2 3/2018 KC1SA DMR basics or DMR 101 This is my perspective on DMR Some material borrowed from Nearfest
Challenging Communication Boundaries RoIP Gateways Radio over IP for Optimal Analog & Digital Radio Network Performance Radio over IP (RoIP) Radio over IP offers a cost effective way to interconnect radio
Motorola MSC-241 Design and Deploy for MOTOTRBO Solutions EMEA http://killexams.com/exam-detail/msc-241 QUESTION: 97 A Dealer installed a Capacity Plus system with 4 voice repeaters. They want to provide
The DMR Documentation Project An introduction for DMR users Project Link https://github.com/wd8kni/dmr-documentation-project Document Version V1.6b 1 FORWARD This document is a work in progress. If you
ENRICHING YOUR DIGITAL EXPERIENCE NEW MEMBER TO WORLD'S MOST COMPLETE DMR PORTFOLIO PD98X www.hytera.com PD98X Highlight Brand New Features 01 Micro SD Card 02 Single Frequency Repeater Mode Based on micro
DIGITAL AUDIO MODES MIKE MYERS Overview Overview of Digital Voice One Technology Started it All Modes Overview Going Beyond your Repeater Other Connection devices Compare the Digital Modes Resources Overview
Uni01 Uni02 Uni03 Uni04 Uni05 Uni01 Uni02 Uni03 Uni04 Uni05 Uni01 Uni02 Uni03 Uni04 Uni05 A New Generation Two-Way Radio THE ACTIVE MULTI-MODE ANALOG / DIGITAL Missing Child Missing Child Image Box Member
Digital Migration Radio Wall Mount Repeater for Indoor Light, Small, Compact Design RF Power 1~25W with 100% Duty Cycle DMR & Analog Auto Switch www.hytera.com is a 25W, DMR and Analog dual mode repeater
Hytera DMR Simulcast System Higher Frequency Efficiency Smooth Roaming and Handover Dynamic Voting Analog/Digital Selectable Smart Subnetting and Patching www.hytera.com DS-6310 DMR Simulcast System Hytera
Hytera DMR Simulcast System Higher Frequency Efficiency Smooth Roaming and Handover Dynamic Voting Analog/Digital Self-adaptive Smart Subnetting and Patching www.hytera.com DS-6310 DMR Simulcast System
INTRODUCTION The AnyTone D868UV radio is a VHF and UHF radio with both Digital DMR (Tier I and II) and Analog capabilities. It offers a total of 4,000 channels (Analog and Digital) and up to 130,000 contacts,
DMRGateway Technical Overview INAD Overview The goal Allow a user on the ASL analog network to communicate with a user on a DMR network. The networks DMR two time slot TDMA RF network IPSC Masters Peers
DMR PROFESSIONAL DIGITAL MOBILE RADIO // Why Simoco Xd? // Simoco Xd Connections count, and with a history of 90 years radio engineering excellence, Simoco combines innovation in 2 way radio design with
10 ADVANTAGES IMPRESSIVE VERSATILITY 1 NEXEDGE offers: Conventional Voting Type C Gen1 Simulcast Multi-Site Conventional Multi-Site Conventional with Voting Type C Gen2 A NX-5000 Series NEXEDGE radio can
Introducing the C4FM/FM and Repeater System Leading Amateur Communications Into the Future System Fusion joins Digital and Analog FM Communication into a single multiple function system. Superior Performance
D-STAR Digital Smart Technologies for Amateur Radio Presentation to Socorro Hamfest Saturday, October 21st, 2017 Ed James, KA8JMW firstname.lastname@example.org Digital protocol data and voice transmitted simultaneously
Department of Computer Science Institute for System Architecture, Chair for Computer Networks Mobile Communication and Mobile Computing Prof. Dr. Alexander Schill http://www.rn.inf.tu-dresden.de Structure
MOTOTRBO R1.8 Training Overview MOTOTRBO System Training Release1.8 MOTOROLA, MOTO, MOTOROLA SOLUTIONS and the Stylized M Logo are trademarks or registered trademarks of Motorola Trademark Holdings, LLC
So are you hungry? Ham radio is like a smorgasbord Contesting Experimentation DXing WinLink Antenna Design PSK JT65 Satellites D-Star Something new and fun to try System Fusion WELCOME To The Future of
Version 9.1 SmartPTT Monitoring December 2016 Table of Contents Table of Contents 1.1 Introduction 2 1.2 Installation of the SmartPTT software 2 1.3 General SmartPTT Radioserver Configuration 6 1.4 SmartPTT
DMR An Overview What is it? Where is it? When will it be here? Group Company Structure Group Capabilities Our secure heritage establishes as one of the most experienced manufacturers and integrators in
DMR Application Note Testing MOTOTRBO Radios On the R8000 Communications System Analyzer April 2 nd, 2015 MOTOTRBO Professional Digital Two-Way Radio System Motorola and MOTOTRBO is registered in the U.S.
: DMR Application Note Testing MOTOTRBO Radios On the Freedom Communications System Analyzer MOTOTRBO Professional Digital Two-Way Radio System Motorola and MOTOTRBO is registered in the U.S. Patent and
XPT Digital Trunking Decentralized and Cost-Effective Digital Trunking Solution Trunking without the Need for a Dedicated Control Channel Economical and Practical Digital Upgrade Solution Large Capacity
Ham VHF/UHF Digital Voice Modes For the beginner Reminder about some terms from the 1 st presentation on HF digital modes When looking at the digital modes of today, you have to look at it from two perspectives
Version 2.3.1 Release Notes 7/31/2018 1. A new field for temperature has been added to Option 13 Bird Thru Line Power meter. 1. The marker frequency entries are not altered by changing the center frequency
SYSTEM FUSION & WIRES-X AN OVERVIEW Parker Radio Association 2/22/2018 MY APOLOGIES IN ADVANCE Some parts of the presentation will sound like a Yaesu commercial. That is because the best information available
Application Note Testing Motorola DMR MOTOTRBO Radios with the Cobham 3920B Radio Test Platform The Cobham 3920B is the complete tool for anyone wishing to test Analog or Digital MOTOTRBO mobile or portable
A FEDERAL, STATE AND MUNICIPAL PARTNERSHIP Alaska Land Mobile Radio Communications System Radio Concepts Overview Radio Concept Review Types of Radios Systems Conventional System Trunked System ALMR Zones
PNW DMR Best Practices Brad Estill, N7ER The 70% DMR Expert Now that you ve learned about DMR, how do you put your knowledge to practical use? So, today you ve heard about DMR, and about the PNW DMR systems.
TETRA AND DMR TIER III: WHICH OPEN STANDARD DIGITAL TRUNKING IS RIGHT FOR ME? TETRA AND DMR TIER III: WHICH OPEN STANDARD DIGITAL TRUNKING IS RIGHT FOR ME? 2 The last few decades have seen the emergence
CARA Flea Market System Fusion Digital Communication Solutions Chris Wilson N0CSW National Sales Manager Yaesu North America New Products DR 1X Repeater Introduction Introduction to System Fusion Comparison
MOTOTRBO PROFESSIONAL DIGITAL TWO-WAY RADIO REPEATERS ACCELERATE PERFORMANCE MOTOTRBO PROFESSIONAL DIGITAL TWO-WAY RADIO SYSTEM THE FUTURE OF TWO-WAY RADIO Motorola is a company of firsts with a rich heritage
Hytera DMR Conventional Series SIP Phone Gateway to Simultaneous Calls Application Notes Document version: 3.0 Date: 02-2015 Copyright Information Hytera is the trademark or registered trademark of Hytera
Wireless Institute of Australia Australian Amateur Band Plans Updated September 2006 Introduction Spectrum Management International spectrum management is the responsibility of the International Telecommunications
XPR 2500 VHF & UHF MOBILES 6.25e/12.5 khz Standard Package Includes: - Compact Microphone (PMMN4090) - Low Profile Bracket (RLN6469) - 10 ft Power Cable (HKN4191) - 3 Year Service from the Start Lite (warranty
Simple to use. Simple to maintain. KENWOOD Viking radios are safe and simple to use. KENWOOD Viking radios bring together the proven Viking P25 software expertise and KENWOOD s recognized hardware quality
Digital Patrol Radio PD412 Compliant with DMR standard Dual Mode Analog & Digital. Embedded RFID reader www.hytera.us Voice Call Voice call capability includes private, group and all call. Rugged & Reliable
Amateur Radio License Class Operating Station Equipment Presented by Steve Gallafent October 3, 2007 Operating Station Equipment Modulation Modulation is the process of adding information to a radio signal
Capacity Plus Configuration Guide Version 8.3 Table of Contents 1 Table of Contents 1 Introduction 2 2 Brief Information on Use of Control Stations 4 3 6 3.1 Programming Repeter 7 3.1.1 Master Repeater
Version 9.1 SmartPTT PLUS November 2016 Table of Contents Table of Contents Introduction 2 Installation of the SmartPTT software 2 General SmartPTT Radioserver Configuration 6 SmartPTT Dispatcher Configuration
Technician Licensing Class Talk to Outer Presented Space by Amateur Radio Technician Class Element 2 Course Presentation ELEMENT 2 SUB-ELEMENTS (Groupings) About Ham Radio Call Signs Control Mind the Rules
Welcome to Ham Radio 102 Intro to Digital Voice Modes Sponsored by Digital Voice Modes So What s The Big Deal??? No static Better voice quality in noisy conditions Easy linking over the internet Send voice
ELECTRONIC COMMUNICATIONS COMMITTEE ECC Decision of 28 October 2005 on harmonised frequencies, technical characteristics, exemption from individual licensing and free carriage and use of digital PMR 446
with and refinement of narrowband digital voice technologies at VHF and above, ARRL states as follows: I. Introduction. 1. The rule changes proposed in this Petition are necessary in order to facilitate
Hytera DMR Conventional Series Back-to-Back Mobile Radio Application Notes Hytera DMR Conventional Series Back-to-Back Mobile Radio Application Notes Version 1.1 Date: Apr, 2014 Web: http://www.hytera.com
XPR 2500 VHF & UHF MOBILES 6.25e/12.5 khz Standard Package Includes: Compact Microphone (PMMN4090) Low Profile Bracket (RLN6469) 10 ft Power Cable (HKN4191) 3 Year Service from the Start Lite (warranty
Code Plug Basics for the MD-380 David Hull, KC6N July 27, 2017 Contents Part I: Some Basic Concepts/Terminology Part II: So you got a new radio, now what? Part III: Code Plug management Entering Contact