ALL UNDER ONE ROOF

TRANSRADIO We have your Solution

2

CONTENT

3

DRM (Digital Radio Mondiale) Radio goes future we show IT ............4 Overview of the DRM Solution ...............................................................5 TRANSRADIO Rides on DRM Potential ...............................................6/7 DRM The Economical Way to reach your Listeners.............................8 SFN Extend the Coverage ....................................................................9 Fraunhofer DRM ContentServer R4.............................................10/11

The new DRM DMOD3 The All in One Solution....................................12 Features..................................................................................................13 Supported DRM Modes.........................................................................13 Harddisk-free Design, VSWR Measurement ........................................14 DRM Reserve and Fall Back Systems....................................................15 Optimization of the DRM Spectrum ......................................................16 Automatic Equalizer Adjustment Speed up your Business..............17

TRAM Premium Line Pure Efficiency in all Modes ...............................19 TRAM Premium Line Highlights ......................................................20/21 Paralleling Unit ......................................................................................22 Riding the Longwave.............................................................................23 Fraunhofer DT 700 DRM Monitoring Receiver......................................24 Remote Control and Error Tracking via SNMP and HTML ...................25

AM Antennas from TRANSRADIO Designed for DRM .........................26Antenna Tuning Devices, Diplexer, ENW ................................................27DRM Consulting Ask the Experts...........................................................28Turnkey-ready Solution from the Market leader......................................29Technical Data DRM DMOD3....................................................................30Ports and Connectors DRM DMOD3 ........................................................31

Optional FraunhoferDRM ContentServerTM R4

MDIdata

Audio

DRM (DIGITAL RADIO MONDIALE) Radio goes future we show IT

4

The major advantage of LF, MF and HF broadcasting in the frequency range below 30 MHz is the huge achievable coverage. While all other technologies need an extensive networkwith a high number of transmitters, AM broadcasting requires justa few transmitters, providing a program to particular target groupsin a large geographical area. Because listeners were accustomedto the high quality of VHF/FM broadcasting, upgrading AM with anew technology was required to deliver the same high standards.Implementing the digital broadcasting technology DRM gives substantial improvements in audio and reception quality.

Robustness in fading channels Significant improvement in audio quality Power savings at the transmitter site Service related data (service labels, alternative frequencies and

language information) Data services (pictures, text- and traffic information) News Service JournalineTM

Digital Radio Mondiale (DRM) is the name of the international consortium, which defined the standardsfor digitalisation of AM broadcasting. DRM was founded

in 1998 and developed a digital radio standard which is endorsedby the IEC, ETSI and ITU. TRANSRADIO, formerly TELEFUNKENSenderSysteme Berlin, as a founding member of this consortium,has tremendously influenced this standard with its experience andknowledge in broadcasting. TRANSRADIO has established itself asthe leading DRM provider. Today TRANSRADIO has the highestnumber of installed DRM transmitters in service.

DRM DMOD3

TRAM TX1

Parallelingunit

Antenna

RFRFback(directionalcoupler)

GPS-antenna or external clock

ENV2

ENV1

RFdrive

RFdrive

RFout

RFout

OptionalFraunhofer DRM Monitoring ReceiverDT 700

RFback

TRAM TX2

Antenna

5

OVERVIEW OF THE DRM SOLUTIONS

TRANSRADIO RIDES ON DRM POTENTIAL

6

MW transmitterTRAM/P 400

Carrier power of400kW(>200kW DRM)in Heusweiler(Germany)

MW transmitterTRAM/P 800

Carrier power of 800kW(>400kW DRM)in Cremlingen/Braunschweig(Germany)

MW transmitterTRAM/P 600

Carrier powerof 600kW

(>300kW DRM)in Marnach

(Luxembourg)

Cremlingen MW 800kW

DRM Medium Wave Transmitting Station

Marnach MW 600kW

Heusweiler MW 400kW

Please find more references on our

TRANSRADIO has established itself as the

worlds leading DRM provider.Today, TRANSRADIO has

the highest number of installed DRM transmitters

in service.

7DRM Long Wave Transmitting Station

LW transmitter TRAM 300L

Carrier power of 300kW (>150 kW DRM)in Summerhill (Ireland)

LW transmitterTRAM/P 500L

Carrier powerof 500kW(>250kW DRM)in Zehlendorf(Germany)

LW transmitterTRAM/P 500L

Carrier powerof 500kW (>250

kW DRM)in Donebach

(Germany)

Zehlendorf LW 500kW

Donebach LW 500kW

Summerhill LW 300KW

r website www.transradio.de/references

The DRM power is normally given as theaverage power of the digital modulation.Because of the high modulation peaks ofthe DRM signal, the average power is significantly lower than for the sametransmitter operating in the analog AMmode. In general a DRM COFDM waveform has a peak to average ratio of about 10 dB. Thus a standard DRMtransmitter with a carrier power of100kW and 100% modulation reaches apeak power of 400kW. The DRM powerof such a transmitter is only 40 kW. As a result, for the same coverage, up to60% of the power can be saved runningan AM transmitter in DRM.

In contrast to standard transmitters,TRANSRADIOs TRAM family of trans-mitters attain a DRM power of up to 73%of their nominal power with all qualityrequirements fulfilled: the MER value is well above the minimum DRM requirement and the out-of-band emissions are considerably within theDRM spectrum mask. This is possibledue to the overmodulation capability of the TRAM transmitters and a peak-to-average ratio reduction schemeimplemented in the DRM DMOD3.

Thus, TRANSRADIOs TRAM family oftransmitters produce nearly two timesthe DRM power compared to a standardtransmitter.

DRM THE ECONOMICAL WAY TO REACH YOUR LISTENERS

8

A single frequency network (SFN) is a radio network that operates severaltransmitters on a single frequency andhas overlapping coverage areas. SFNsare an efficient method of extending the coverage area without the need for additional frequencies. Signals arrivingfrom transmitters outside the local trans-mitter area can reinforce reception andrecover losses through local anomalouspropagation effects. Any receiver in thecoverage area of these transmitters willreceive the signal from more than onetransmitter. Different paths that arrivefrom distant transmitters in the SFNmust arrive with a delay separation thatis less than the guard interval duration,or otherwise inter-symbol interferenceoccurs. To avoid interference, each station is run synchronously with theothers using GPS as a reference clock.The built-in GPS receiver of the DRMDMOD3 from TRANSRADIO is implemented for single frequency networks. Tests in the medium waveband, conducted in cooperation with MEDIA BROADCAST GmbH and in theshort wave band, in cooperation withthe DRM consortium demonstrated thereadiness of the DRM DMOD3 for alltypes of SFN's.

SFN EXTEND THE COVERAGE

9

SFN-Berlin: 3 TRAM 10, 1485 kHz

The Fraunhofer DRM ContentServerR4 is designed to meet all the demandsof DRM broadcasters, DRM network providers and DRM transmitter operators with regard to DRM Multiplexgeneration. The system is typically located in the studio or a playout centeror at the transmitter site with fullremote control for administration anddata provision. The Fraunhofer DRMContentServer R4 is based on robustand redundant 19 server hardware forreliable 24/7 operation.

The Fraunhofer DRM ContentServerR4 provides triple functionality:

DRM Audio ServerWith multi-stream real time audio encoding

DRM Multimedia Data ServerProviding all standardized as wellas proprietary mechanisms for

data application import, preparation, encoding and broadcast

DRM Multiplex GeneratorManaging the extensive DRM signalling capabilities, generating

the full digital DRM Multiplex and providing standard MDI/DCP output streams.

The system can easily be scaled tomatch individual requirements and tosupport proprietary data applications.

The system has 3 major interfaces:Configuration and Administration:The system is designed to be administe-red remotely using any modern HTMLbrowser. The system status is availablevia remote HTML interface (includingdetailed status information), automatice-mail report system, local status moni-tor, relay board signalling and SNMP.

Audio and Data Input:For audio input, the system supports upto 4 digital AES/EBU or up to 4 analogstereo signals. In addition, playlists andmp3 files can be uploaded to the systemfor offline audio encoding. Data for multimedia applications can be providedusing a variety of standard protocols(e.g. FTP, HTTP, RSS, UECP, Leitungspro-tokoll, Funkhaustelegramm). Powerfulmirroring features provide automaticand scheduled data updates e.g. fromFTP, HTTP and RSS sources on the web.

DRM Multiplex Output via MDI/DCP:The complete digital DRM multiplexgenerated by the Fraunhofer DRM ContentServer R4 can be fed simultaneously to any number of DRMmodulators or monitoring stations formulti-frequency or SFN broadcasts. The output stream uses the standardizedMDI/DCP protocol supported by all standard compliant DRM modulatorsand monitoring equipment via UDP/IPbased or serial connections.

FRAUNHOFER DRM CONTENTSERVER R4

Overview of the DRM ContentServerTM R4

10

ConfigInterface

DR

M M

ultip

lex

Gen

erat

or

DRMAudioServer

DRMMultimediaDataServer

FAC

SDC

MSC

MDI / DCPInterface

GPS

Remote Configuration/Administration

DRMModulators

Audio

Data

Optional FraunhoferDRM ContentServerTM R4

MDIdata

Audio

OVERVIEW

Public NetworkContent Contribution

Protected Privat NetworkBroadcast Distribution Chain

DRM Multiplex Generator

DRM AudioServer

DRM MultimediaDataserver

TM

Audio 1-4 Streams(live/playlist)

Analoge/ ISDN Modem

Local status/ Config menu

Relay card

Emailnotification

Time syncGPS, ntp

4 x (AAC, CELP,HVXC)

SNMP

Administration(Webbrowser)

Firewall /Security

MDI / DCP

Local / long distanceAny number of simultaneous outputs (SFN)IP uni-/multicastRS-232

System Status

Data Application

DRM Text MessagesNews Service JournalineMOT SlideshowMOT Broadcast WebsiteTPEG Traffic InformationEPG-Electronic Program GuideTOP NewsTMC-Traffic Message Channel

Features of the DRM ContentServerTM R4

11

THE NEW DRM DMOD3 - THE ALL IN ONE SOLUTION

12

Mode A Mode B Mode C Mode D

Nominal Bandwidth (9/10 kHz)

Half Bandwidth (4.5/5 kHz)

Double Bandwidth (18/20 kHz)

64QAM MSC, all Code Rates

16QAM MSC, all Code Rates

16QAM SDC

4QAM SDC

Standard Modulation

Hierarchical Modulation

Equal Error Protection

Unequal Error Protection

Long/Short Interleaving

= supported

The aim of the new DRM DMOD3 is to offer highly automated configuration procedures, maximumreliability, low power consumption, lowheat dissipation and a compact andergonomic design. All broadcastingmodes are possible. The DRM DMOD3offers easy and fast switchover facilitybetween analog AM, pure DRM, singlechannel or multi channel simulcast. Core features of the new DRM exciterare the automatic equalizer adjustmentand the integrated antenna voltage standing wave ratio (VSWR) measure-ment capability, which offers a very precise and fast method to set up DRM equipment. The DRM DMOD3 is designed for mounting in standard19 racks of 4U height. It eliminates the requirement for a separate RF processor and offers a significant reduction in external wiring.Low power consumption, reduced operating temperature and a higherMTBF have been achieved by implementing notebook technologycomponents and a harddisk-free design.

Operation modes Operation modes AM, DRM, SCS and

MCS

Fast switchover Fast switchover is accomplished in

less than 5 seconds between all operation modes

Automatic Equalizer Adjustment Easy signal correction with automatic

equalizer adjustment

VSWR Measurement of the Antenna

Integrated RF Processor The DRM DMOD3 fits into a single

4RU Case Significant reduction of external wiring

Low Power Consumption Harddisk-free design Use of notebook components

Ergonomic Design Increased display size of 8.4 Provides a resolution of 800x600 for

easy readability Simple to operate without the need

of a external keyboard

Improved Reliability Harddisk-free design for better MTBF Wide ambient temperature range

up to 50 C

Now all DRM-Modes fully supported!

New Features:

13

DRM DMOD3

E

E

OVERVIEW

VSWR MEASUREMENT, HARDDISK-FREE DESIGN

14

Harddisk-Free Memory Architecture

VSWR Measurement of the AntennaThe DRM broadcast must be compliantwith the ITU spectrum mask and requires low antenna VSWR. The DRMDMOD3 is capable of measuring theVSWR of the antenna during DRM operation and to show the result on thescreen. This enables the broadcaster tomonitor antenna matching during regular operation without additionalmeasuring equipment.

Furthermore the DRM spectrum is mea-sured and is visualized by the integratedDRM DMOD3 web server.

The new memory architecture of the DRMDMOD3 offers maximum reliability due to the harddisk-free design. All necessarydata to boot up and to run the DMOD3 are stored on a static permanent storage(flash1), which has read only access. Inessential dynamic data for logging and configuration, which are written

occasionally, are stored on a secondflash memory (flash 2). This separationof the essential and inessential data on two flash storage devices was madeto increase the reliability of the architecture, since the likelihood of failure of a flash memory is determinedmainly by the number of write cycles.

RAMDiskFlash1 Flash2

Static permanentstorage

StartupProgramsPermanent config

Dynamic permanentstorage

Log filesDynamic configuration

Dynamic volatilestorage

Temporary dataFast logging

Data Processing

Mandatory- Read only

Inessential for normal operation

Memory Architecture

Example of an Antenna VSWR

Dual-flash storage architecture: Safe like a safe

Active DRM ReserveThe active DRM reserve offers a maximum of reliability for a DRM system. Two DRM exciters superviseeach other during normal operation. In the unlikely event of failure of one DRM exciter, the remaining exciter takes over the service and keeps the transmitter(s) on air. In an active reserve, double exciter system the test points of the transmitter(s) are switched as well.

DRM Exciter Fall-Back SolutionThe exciter fall-back solution gives the opportunity to fall back from DRM transmission to AM, DAM or AMC modulation in the unlikely event of failure of the digital exciter. In fall back mode the audio signalbypasses the digital exciter. The internal synthesizer of the trans-mitter provides the RF signal and thetransmitter is kept on air by means ofthe internal AM modulator.

Combination of Active DRM Reserve and DRM Exciter Fall-BackIn order to further increase the reliability of the DRM system, the Active DRM Reserve and the Exciter Fall-Back Solution can be combined. In the unlikely case of the failure of both DRM exciters the internal synthesizer of the transmitter provides the RF signal.

DRM DMOD3 -A

TX Antenna

MDI

Audio

MDI

Audio

Control Unit

Supervision Link

RF, Envelope

RF, Envelope

DRM DMOD3 TX Antenna

Audio

Control Unit

RF from TX-Synthesizer

RF

Envelope

Audio

Audio

RF

Envelope

MDI

DRM RESERVE AND FALL BACK SYSTEMS

15

OPTIMIZATION OF THE DRM SPECTRUM

16

The DRM DMOD3 provides automatic functions to pre-equalize the transmitted signal in order to minimize the out-of-band emissions.The aim of the pre-equalization process is to reduce the influence of linear and non-linear distortions on the DRM signal.

The following pre-equalization functions are supported by the DRM DMOD3:

Optimisation Process

Compensation of Non-linear Distortion I

Measurement of theamplifier characteristic(AM/AM characteristic)

Calculation of a correction curve

Pre-equalization of thetransmission signal

Compensation of Non-linear Distortion II

Measurement of the incident phase modulation (AM/PM characteristic)

Calculation of a correction curve

Pre-equalization of thetransmission signal

Compensation of Linear Distortions

Measurement of the envelope frequencyresponse

Calculation of an equalization filter to compensate the amplitude frequencyresponse and the groupdelay distortions

Pre-equalization of thetransmission signal

Adjustment of the TimeDelay and the DC Offset

The DRM DMOD3 offers a sophisticatedalgorithm for optimaladjustments between the delay differences of the amplitude- andphase signal as well as the DC offset.

AM/AM AM/PM H (j) , DC

Broadcast operators demand an auto-mated configuration procedure for DRM equipment and the DRM DMOD3 isthe answer. The DRM DMOD3 providesautomated functions to pre-equalize the transmit signal in order to reduceout-of-band emissions. The equalizeradjustment can be performed automatically just by the push of a button.

The DRM DMOD3 auto-adjust of theequalizer offers:

Automatic initial equalizer adjustment Equalizer optimization during DRM

operation

Adaptive equalization Automatic switching of up to three

different test points

Crucial parameters like time delay, DC offset and envelope frequencyresponse are optimized in order tominimize out-of-band emissions

SPEED UP YOUR BUSINESS

17

One Button Automatic Equalizer Adjustment

MDI Decoder&

OFDM Generator

I-Qto

A-PhiConversion

TX

EnvelopeFilter

DRM DMOD3Auto - Adjust

MDIUpsampling

&RF-Output

RF-Input&

Downsampling

Measuring PointSwitching device

DelayAdjustment

I,Q

TestPoint 1

TestPoint 2

DC-OffsetFilter CoefficientsA-PhiDelay

Phasemodulated

RF

Envelope

Phi

A

TestPoint 3

Equalizer

DRM DMOD3

Block Diagram of the Automatic Equalizer Adjustment

TRAM PREMIUM LINE PURE EFFICIENCY IN ALL MODES

18

TRAM 10 TRAM 100TRAM 50

19

Many years of experience in the field of high power transmitters inconjunction with the latest state of theart transistor technology has paved theway for a future oriented and meanwhilewell established solid state transmitterconcept. As opposed to conventionaltransmitters the simple modular systemof solid state medium wave transmittersfrom TRANSRADIO offers a maximum of flexibility and unsurpassed audio quality. The TRAM Premium line basedon the new developed power modulessecures optimized DRM parameter whileachieving an outstanding overall efficiency in all operation modes.

All TRAM Premium line transmitters areoptimized for digital transmission andexceed the DRM recommendations. The layout, in standard 19" racks, allowsfor easy and comfortable access to allcomponents and modules and results in exceptionally low space requirementfor the respective power classes. The power amplifier stage offers truemodular redundancy through the use ofstandardized 1 kW amplifier modules.Each individual module is equipped withan on-board PDM modulator and noquantization problems occur. Designedwith a high power reserve capability,each module provides full signal qualityon its own.

The TRAM Premium Line optimized for DRM Transmission

TRAM 400

TRAM TX2

TRAM TX1

OVERVIEW

20

Outstanding efficiency and excellent performancedata

125 % positive peak programme capability DAM operating mode for further energy saving

(standard for all models, DCC by jumper setting)

Compact and service-friendly design, extremelylow space requirement

Modular design of the power amplifiers: standard 1 kW plug-in power module, broadband over thewhole MF range, no tuning of the modules is required. Integrated supervision and protection circuits are standard features.

All transmitters are exclusively air-cooled utilising a unique internal air-flow system. Recycled air cooling by means of air-water heat exchangersavailable.

Factory fitted and tuned to the desired operatingfrequency.

Rugged construction with emphasis placed on highmechanical strength and stability.

Combining stand alone transmitters by utilising aninnovative paralleling unit (PU). No need for a high-power reject load.

TRAM Premium line transmitters are also availableas long wave broadcast transmitters (150 to 300kHz) and long wave communication transmitters(14 to 148 KHz)

All TRAM Premium line transmitters are optimizedfor digital modulation techniques such as DRM.

TRAM Essentials at a GlanceLW communication transmitters: 14 kHz to 148 kHzLW broadcast transmitters: 150kHz to 300kHzMW broadcast transmitters: 525 kHz to 1710 kHzOutput power range: stand-alone version 5kW to 600 kW

combined up to 2000 kW

TRAM PREMIUM LINE HIGHLIGHTS TRANSRADIO

TRAM-transmitters, prefered models

TypeNo. of 50kW- Power blocks

No. of identical power modules

No. of driver modules

Output power (other power classes on request)*)

Frequency range LW

MW

Operation modes

RF Output Connector

Load impedance

VSWR

Modulation system

AF range

AF Frequency response

AF harmonic Distortion (THD)

Modulation capability

Carrier shift (amplitude drop)

RF harmonics and spurious emissions

Signal to noise ratio

Frequency stability

AF Input

Power supply Voltage

Frequency

Voltage variations

Power factor

Power consumption m = 0

m = 1

Overall efficiency**)

Control Local

Remote

Environmental Temperatureconditions

Relative humidity

Installation altitude

Cooling system

Dimensions [mm] Width(LW TXs require more filter racks) Depth

Height

21

TRANSRADIO RF and Power are our Strength

AM TRANSMITTERS A SECURE INVESTMENT INTO THE FUTURE

TRAM 5 TRAM 10 TRAM 25 TRAM 50 TRAM 100 TRAM 200 TRAM 300 TRAM 400 TRAM 500 TRAM 6001 2 4 6 8 10 12

5 10 24 48 96 192 288 384 480 576

1 1 2 4 6 8 10 12

5 kW 10 kW 25 kW 50 kW 100 kW 200 kW 300 kW 400 kW 500 kW 600 kW

150 kHz to 300 kHz

525 kHz to 1710 kHz

Factory fitted and tuned to the determined operating frequency

Components for change to other frequencies on request

AM (A3E) AM reduced power P/4 DAM (X3E), i.e. dynamic carrier control AM stereo capability, prepared for DRM

7/8 EIA 1 5/8 EIA 3 1/8 EIA 4 1/2 EIA 6 1/8 EIA 9 EIA

50 unbalanced

VSWR 1.3 tuneable, automatic power reduction as a result of increasing VSWR during operation

Pulse Duration Modulation (PDM)

30 Hz to 10 kHz

Changeover between a maximum of 2 band limiting filters on request

0.5 dB, 30 Hz to 10 kHz, with band limiting filters switched off

1% at m = 0,8

100% continuously, + 125% peak programme capability

1% with voltage regulation

Standard: according to ITU-R SM 329 or better ( 50mW), FCC requirements on request

60 dB referred to 100% Modulation

Deviation 5Hz, external synchronisation of synthesizer possible

600 balanced (can be changed inside the unit by jumper to 2000 )

Adjustable from 10dBm to +10dBm referred to 100% modulation, switched coarse increments (5dB), fine adjustment by potentiometer

Standard mains configuration: 3 N 400V;TN-S or TN-C, other voltages on request, TRAM 200 or higher MV supply preferred

50Hz (60 Hz on request)

5% with full performance; 10% with minor performance degradation

0.9 0.95

6.7 kW 12.2 kW 29,8 kW 57,5 kW 114,9 kW 229,9 kW 344,8 kW 459,8 kW 574,7 kW 689,7 kW

10,0 kW 18.3 kW 44,6 kW 86,2 kW 172,4 kW 344,8 kW 517,2 kW 689,7 kW 862,1 kW 1034,5 kW

> 75% > 82% > 84% 87%

OFF/ON, full power/on, reduced power(P/n) AM/DAM selection local/remote

Changeover between 2 AF band limiting filters various status indications by LED

Command input by floating contacts, same commands as for local control, indications by floating contacts

RS 232 standard and BIT BUS, SNMP, HTML optional

Standard: 10 C to +50C, other environmental temperatures on request

maximum 95%, non-condensing

Standard: maximum 2000 m, higher altitudes on request

Air cooling (intake air from the room, exhaust air to the room, air duct system with blowers on request)

600 600 1200 1800 3000 4800 6000 9600 10800 12000

1000 1000 1000 1000 1000 1000 1000 1000 1000 1000

2000 2000 2000 2000 2000 2500 2500 2500 2500 2500

*) All other power ranges on request **) with standard cooling

PARALLELING UNIT

22

The paralleling unit (PU) serves to combine two single transmitters to double the output power. Furthermore, it provides an active redundancy systemto avoid a loss of transmission duringmaintenance schedules. The PU equipment contains a centralcontrol unit, a combining network and a compact balancing resistor. The load regulation of the central controlunit ensures that both transmitters arelevelled automatically to equal RF outputpowers and a minimum of power is lost on the balancing resistor. In the unlikely event of failure of one of thetransmitters, a motorised RF switch willautomatically switch the unaffectedtransmitter directly to the antenna andthe faulty transmitter to a dummy load.The transmission continues and thefaulty transmitter can be repaired whilstconnected to the dummy load.

PU Control Unit

Parallelingunit

A

RFbac(directcouple

RFout

OVERVIEW

Longwave is well known for excellentground wave coverage hence, offering astable reception. DRM on LW combinesthe advantages of digital transmissionwith very good longwave propagation.On the other hand, narrow band longwave antennas with considerablemismatch even inside the transmissionbandwidth are posing a big challenge tothe broadcast industry. TRANSRADIOhas accepted this challenge and has successfully modernized several LWtransmission stations with its DRM solution. The DRM installation on LWneeds completely to fulfill the requirements concerning the out-of-band emissionsof ETSI EN 302 245-1 andITU SM.1541. Therefore, TRANSRADIOimplements an Extension Network(ENW) to eliminate the disadvantages ofthe asymmetrical antenna impedanceand to reduce mismatch. This results ina reduction of the standing wave ratioand a significant mask reserve. A worldpremier was achieved when the TRANSRADIO transmitter in Zehlendorf(Germany) broadcast for the first timeDRM on long wave in accordance withthe ETSI/ITU standard. Since thenTRANSRADIO reconfirmed impressivelyits leading position with respect to LWand has modernized LW transmittingstations, for example, in Donebach,Aholming (Germany) and Summerhill(Ireland).

RIDING THE LONGWAVE

23

Burg, Mainflingen and Kalundborg are Signals received from other Stations

Spectrum of the transmitted Signal in Zehlendorf

Mainflingen

Burg

Kalundborg, DK

Long Wave-Antennain Zehlendorf (360m)

Long Wave TransmitterTRAM/P 500L (500kW)

from TRANSRADIO in Zehlendorf

ConceptThe DRM Monitoring Receiver DT 700 is a professional monitoring receiverperfectly suited for DRM reception andtransmitter monitoring. It features a high performance front-end based onthe latest direct sampling reception technology. Together with a 12-band fix-tuned preselector filter bank, theDRM Monitoring Receiver DT 700 guarantees an outstanding receptionperformance and low phase noise. The receiver's signal processing is basedon a Software Defined Radio (SDR) construction. Its core is an embeddedLinux PC. The latter features an easysoftware update via built-in DVD drive.The highly reliable hardware is built for 24/7 continuous operation as isnecessary for a professional broadcastenvironment. Based on the embeddedLinux platform a web server allows easyremote access to all of the receiver'scontrol functions. The DRM MonitoringReceiver DT 700 is available with twodifferent reference oscillator accuracies standard oscillator (5ppm, Option B1) orhigh precision OCXO (

This function gives broadcast operatorsthe freedom to control their equipmentfrom any place in the world. Each individual transmitter or paralleling unit(PU) is optionally accessible via SNMPand HTML. The network access can bevia dial-in (PSTN, ISDN) or Ethernet connection (TCP/IP). The web server and the SNMP MIBs (management

management system. If a failure occurs,traps are sent by the SNMP agent. SNMPtraps can be collected and presented by a central management system. Also transmitter parameters can be modified via set commands. In addition,SMS messages and emails can be sent to the operator and the clock can be synchronized by an NTP-server.

Web Accessvia HTMLBased on aweb server, all necessaryfunctions of a transmittersystem can bemonitored andcontrolled by a standardbrowser noproprietarysoftware isrequired.

REMOTE CONTROL AND ERROR TRACKING VIA SNMP AND HTML

25

information base) offer all necessaryfunctions to remotely control the transmitter and display failure messages.

SNMPAs a result of standardized SNMP-MIBimplementation, the SNMP functions can be seamlessly integrated in a SNMP

Client with standard-

webbrowser SMS-messages

SNMP-management system

Mailserver

NTP-server for time-synchronisation

TRAM-transmitter

ISDN/PSTNrouter

Ethernet Interface Card

Ethernet

Standardized SNMP-MIB of a TRAM Transmitter

Webinterface of a TRAM Transmitter

er

AM ANTENNAS FROM TRANSRADIO DESIGNED FOR DRM

26

TRANSRADIO is dedicated to the design and development of AM antennas and related systems for broadcasters and to provide consultation to adapt and improve existing AM antennas especially for DRM. High quality DRM transmission without violating the specified spectrum mask requires high demands on antenna systems. In particular, broad impedance bandwidth is needed as well as symmetric characteristicsof impedance related to the carrier frequency. TRANSRADIO stays at the forefront of thelatest DRM technologies through innovativesolutions to technical challenges.

Our product portfolio includes: Directional and omni-directional antennas Antenna tuning devices including

(diplexers, triplexers, quadplexers, filters )

Extension Networks (ENW) Antenna switching matrixs RF feed lines Dummy loads (air-cooled,

water-cooled) Optimisation of existing antenna

designs especially to improve bandwidth and static grounding of all antenna parts

Horizontal Cross DipoleAntenna for MW Broadcastingin Mainflingen (Germany)

Vertical Pattern of Cross Dipole Antenna for Suspension Height

of 0.4 LambdaComputer Model of the CrossDipole Antenna Mainflingen

27

ling

Antenna

RFback

Antenna

OVERVIEW

The Extension Networkis the KeyThe quality of the DRM signal in thecoverage area depends significantly on a well designed antenna system.Bandwidth and radiation characteristicsare important criteria for good performance when choosing an antennatype. Years of experience with industrystandard tools has given us the capability to design all types of antennas.

In order to adapt existing AM antennasespecially for DRM, narrow band AMantennas with considerable mismatcheven inside the transmission bandwidthare posing a big challenge to the broadcast industry. TRANSRADIO hasaccepted this challenge and modernisesAM transmitting stations for DRM according to the requirements withrespect to the out-of-band emissions of ETSI EN 302 245-1 and ITU SM.1541.

The key to fulfill the requirements is the Extension Network (ENW). The ENW is implemented to eliminatethe disadvantages of the asymmetricalantenna impedance and to reduce mismatch.

Extension Network(ENW) in Donebach(Germany)

Antenna Tuning Unit (ATU)in Szolnok (Hungary)

28

DRM Upgrade KitsMany broadcasters still use transmittersbuilt in the 1970s and 1980s. Securinginvestments is an important issue forbroadcasters. Therefore an increasingnumber of broadcasters made the decision to upgrade their transmitterswith DRM exciters. TRANSRADIO delivers the solutions to upgrade thesesystems with DRM exciters and offerssite surveys to define the best upgradesolution. The TRANSRADIO DRM exciters have not only proved their compatibility to transmitters built byTRANSRADIO but also their ability tooperate with transmitters from othermanufactures.

DRM Antenna TuningTRANSRADIO provides consulting todevelop complete AM antenna systemsand to deliver, adapt and improve AM antennas especially for DRM. In general, TRANSRADIO employsExtension Networks (ENW) in orderto reduce unwanted phase modulationin the antenna and the mismatch of theload. The transmitters have a maximumof transmission quality because theyoperate on a wide-band matched load.

DRM Planning GuidanceThe calculation of the necessary DRM power of the transmitter dependsamongst other things on the groundconductivity, the robustness of the DRM mode, frequency and the requiredelectrical field strength. The TRANSRADIO consultant serviceprovides the necessary information todimension your DRM system.

DRM CONSULTING ASK THE EXPERTS

Transmitterinstallation

BuildingsContainers

VentilationAir-conditioning systemFire detector systemsEmergency power supply

Medium voltageLow voltage

Antenna installationAntenna tuning

TRANSRADIO delivers custom-tailoredsolutions to meet the needs of broadcasters. Our professional serviceencompasses the delivery of the transmitter and the management ofturnkey-ready projects including all facilities to operate a broadcasting system.

TURNKEY-READY SOLUTION FROM THE MARKET LEADER

Overview of the Professional Service

29

TECHNICAL DATA DRM DMOD3

30

Inputs for DRM Modulation Data V.24/RS232 asynchronous serial port with MDI protocol 10/100/1000 Mbit Ethernet port for UDP data transfer using MDI protocol

Inputs for Audio Signals for AM, DRM Standard XLR connectors for analog signals with normal line level or Simulcast Transmissions (+2dBV max.) at 10 kOhm

Standard XLR connectors for AES/EBU digital audio input Toslink connectors for ADAT optical audio input

Remote Control V.24/RS232/Network connection with Bitbus syntax Graphical user interface over IP Web interface

Modulator Industrial 19 4U rack mountable; Linux OS

Supported DRM Modes Modes A, B, C and D with bandwidths of 4.5, 5, 9 and 10 kHz forA/Phi transmitters; 18/20 kHz in addition for linear transmitters Error protection: EEP and UEP Standard and hierarchical modulation

RF Signal Direct-Digital-Synthesis signal generation Tuneable frequency range from 9 kHz to 26.1 MHz Output level 5 Vpp at 50 Ohm

Amplitude Signal Sampling rate of 192 kHz Frequency range from 0 Hz to about 80 kHz Output level 2 Vpp at 600 Ohm

Power Supply 100 ... 240 V single phase

Synchronization integrated GPS synchronization

Environmental Conditions Temperature: 10 ... +50 C Humidity: 10 ... 80 % RH, non condensing

Fast Switchover Fast switchover is accomplished in less than 5 seconds between allavailable modes (DRM, AM, Simulcast )

Other RF input for measurement and equalization functions with three selectable input connectors

PORTS AND CONNECTORS DRM DMOD3

31

Rear View DRM DMOD3Synchronisation

via GPS or external clocks

GPS RS-232

RF output to TXsin and

square

RF inputprobes

from TX

Envelopeoutput to TX

RS-232 serial ports for remote control, MDI data and UPS

Signallingrelays

Networkinterface

USB

Mains100-240V ~

ADAT digitaloptical audio

Analogaudio inputs

Digital audioinputs AES/EBU

32

des

ign

: HU

SS

-ME

DIE

N G

mb

H

ph

oto

s: T

ran

srad

io S

end

erS

yste

me

AG

, Wo

lfg

ang

Ko

rall,

Klu

we-

Yorc

k

TRANSRADIO SenderSysteme Berlin AGMertensstrae 6313587 BerlinGermany

Phone: +49 30 33978-0Fax: +49 30 33978-599E-mail: info@tsb-ag.deInternet: http://www.transradio.de