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Optimizing COmmuniCatiOns f

direct to hom

Why is Comtech Telecommunications the worlds leading supplier of Direct To Home (DTH) head-end

transmission equipment?

We have the widest selection of DTH satellite uplink hardware:

Satellite Modems & Modulators

Frequency Converters

HighPowerAmpliers

Switching & Redundancy Options

Signal Monitoring Equipment

We empower DTH providers to increase service offerings & ARPU, and reduce recurring costs:

Enable software updates to new transmission standards

Improve bandwidth / power utilization and MER / BER performance

Enable full transponder utilization

Options for IP-based and VOD services

Add Enterprise IPTV offerings

Save75%inampliercosts,powerconsumptionandfacilitycosts

We provide service, support and stability:How can you expect the best available service and support from your vendors if they dont have a proven

track record of stability? Comtech is a U.S.-based public company (NASDAQ: CMTL). Comtech has been in

thesatellitebusinesssince1967,hasahistoryofcontinuedgrowthandhassatellitecommunicationsground

equipment installed in more than 160 countries.

Over4,000satellitemodems/modulatorssoldtoDTHprovidersworldwide

Frequencyconvertersaverageover350,000hoursofservicewithoutoutage TWTAAmpliersdeployedbyeveryU.S.-basedDTHoperator

WIDEST SELECOF DTH UPLINKHARDWARE

MARKET-LEADITECHNOLOGIES

STABILITY &RELIABILITY

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sateLLite mODems & mODuLatOrs

Transport Stream Interfaces and Modularity

Toprotectyourlongterminvestment,ourmodems/modulatorscomewithaexibleassortmentofinterfaceoptionsthatareeld

installable. Multiple interfaces can be co-installed on these products

providingyourDTHuplinkfacilitytheexibilityandmonitoring

capability you demand. Interface expansion slots include:

10/100/1000Gig-EdatapipeFacilitatesIPTVservicestoenterprises and DVR caching service CCM,VCMandACMMod/CodMappingEnablesIPdataservicestobusinessandendusers PRO-MPEGCOP3AllowsuseofnextgenerationIP-basedencodersandmultiplexers Auto-EQ Automatic group delay and amplitude pre-distortion module Maximizes transponder resources and compensates forsatellite transponder distortion ASI-MonitorportProvidesvaluablecondencemonitoringsolutions

Redundant interfaces Enables transport stream selection and internal switchingPeak Performance

With4,000+modems/modulatorsdeployedbyDTHproviders,noothercompanyhasthebackgroundandexperienceofsupportinghigh

revenue DTH programs like Comtech does. Your satellite transmission equipment represents your sole delivery mechanism to your end

customer.DTHequipmentisnotusedasaterrestrialemergencybackup.Everyoutagerepresentsapotentiallossofmultiplechannels,

guaranteedadvertisingpositions,millionsofsubscribersandhundredsofthousandsofdollarsinrevenue.Ourmodems/modulators

aredesignedtoexceedtheDVB,DVB-S2andDVB-DSNGstandardsandprovidetheindustrysbestModulationErrorRatio(MER)

performance.Comtechmodems/modulatorsarebuilttolastfordecadesandprovideaplatformexibleenoughtosupportinfrastructure

upgradesandmodicationwithminimalimpacttohardwareandwiring.

FREQUENCY CONVERTERS

Comtech EF Datas converters set the standard for consistent

reliabilityandcost-effective,high-performancefrequency

conversion.ProvidingademonstratedMTBFof350,000hours

derivedfromgreaterthan10,000eldedunitsandover15years

ofmarketleadership,ourconvertersareanexcellentchoicefor

the stringent reliability requirements of broadcast systems. A broad

product line with over 40 different models translating between

IFfrequenciesof70/140MHzorL-BandtoC-,X-,Ku-Bandand

theHotbirdsatellitebandsensuresthereisaconvertersuitedforyourspecicrequirements.

Comtech offers 1:1 and 1:N redundancy switching options for your RF equipment. By utilizing the patented (U.S. #5666646) Daisy

ChainSwitchingtechnology,theconverterssupportredundantoperationusingdistributedprotectionswitchinginanactiveDaisyChainconguration.Thisredundantsystemtopologyprovidesbackupfor1to12onlineconverters.

ComtechsnumerousswitchingoptionscoupledwiththeRFperformance,breadthofproducts,anddemonstratedreliability,makeour

convertersthenocompromise,cost-effectivechoiceofDTHoperators.

CDM-710 Broadcast Satellite Modem &

DM240XR DVB Modulator

MBT-5000 L-Band Up/Down Converter System

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HigH pOWer ampLifiers

HighpowerampliersareacriticalcomponentinDTHuplinks.Ampliersaffectlinkperformance,andareoneofthemajorfactors

involvedindeterminingavailability,installationandoperationalcosts.OurComtechXicomTechnologydivisionunderstandsthatyouneedthemostcost-effectiveandreliablesolutionthatprovidestheexibilitytogrowyourbusiness.WearetheDTHuplinkamplier

providerofchoiceinNorthAmericaandtheleadingoutdoortravelingwavetubeamplier(TWTA)supplierworldwide.

TWTAsolutionsreducethecosttopurchase,install,operateandmaintaintheHPAsbyover75%whencomparedtoindoorklystron

powerampliers(KPAs).Weofferindustry-leadinghighpoweroutdoorpackagedTWTAsystemsinC-,Ku-,DBS-andKa-Band.

Reducing System Cost and Complexity

TWTAscansimultaneouslytransmitmultiplecarriers,takingtheplaceofmultipleKPAs.

Multi-carrier operation with a single HPA can dramatically reduce your installation and

replacementcosts.Forexample,aDTHproviderwithfourchannelstotransmitcanmultiplex

thesewitha1+1TWTAsolution,requiringonlytwoHPAs,comparedwithfouronline

ampliersandatleastonespareforaklystronapproach.Benetsinclude:

Eliminatingtheneedformultiplexersandsimpliedswitchingsystems. Reducing your HPA power consumption by ~90% due to the reduced number of HPAsrequiredandTWTAefciency,loweringoperatingcostsandenhancingreliability. Reducing the size and cost of the emergency backup generator (or increasing backupoperationtimebyupto10X). EliminatingtheneedforafastchannelchangerforthebackupHPA,sincetransmitfrequenciesareeasilychangedonaTWTAbymodifyingitsinputfrequency;klystronsmustbemechanicallytuned,increasingoperationalmanpowerrequirements.

High power outdoor TWTAs enable you to mount the HPA at the antenna. Moving the HPAs from the transmission room to the antenna

providesadditionalbenets:

EliminateslongwaveguiderunsbetweenthetransmissionroomandantennaalongwiththeirassociatedRFlosses.InmanycasesasingleTWTA,withitshigherinstantaneousbandwidth,canprovidemuchmorepowerattheantennacomparedtoKPAs. Reduces space requirements in the transmission room facility; saves on new installations and frees up space needed for upgrades Reducesairconditioningcostsbyeliminatingasignicantportionofthethermaldissipationinthetransmissionroom.

Flexibility for the Future

ExpandingyournetworkusingTWTAsiseasycomparedtoaKPAapproach.Carrierscanbeaddedwithoutinstallingadditional

ampliersaslongasthesystemoperateswithinthepowerandlinearityrequirementsoftheTWTA.Thismethodismoreexiblethanthe

traditionalapproachofaddinganewKPAforeachaddedcarrier.And,itprovidesexibilityinthelinkforchangesinpowerandlinearity

requirementsperchannelasthetransmissionstandardschange.MaximizingthisTWTAadvantage,weofferthehighestoutputpower

TWTAsintheindustry,withupto1250WatKu-Band,750WatDBS-Band,and500WatKa-Band.Sinceyouoperatetheselinksfor

decades,weofferTWTAswithmultiplesourcesoftubes,thusreducingdependenceonasingletubesupplier.OurTWTAsareavailable

withoptionsforextendedbandwidth,Ethernetinterface,predistortionlinearizers,andintegratedL-BandBUCs.

ThebusinesscaseforouroutdoorTWTAsinDTHuplinksiscompelling.DTHprovidersbenetfromareliablesolutionofferingreduced

costs,lowerelectricityconsumptionandareductioninfacilitiesandancillaryequipmentcosts.Ourlonghistoryoftechnologyleadership

in high power outdoor TWTAs for satellite communications and our outstanding record for reliability will help build your business and we

will be there to support you in the future.

Ka-Band Antenna-Mount TWTA

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sWitCHing & reDunDanCY OptiOns

WerecognizethatDTHoperatorsdependonyearroundoperationandsupport.Anyoutageaffectsmultipleprograms,vastrevenue

streamsandmillionsofcustomers.Forthesereasons,ComtechoffersDTHprovidersawideselectionofswitchingandredundancycongurationstocomplementourmodem,converterandamplierproducts.

Baseband,IF,L-BandandRFswitching Monitorportsforonline,backupandswitchpositioningforlocalandremotestatus Seriesswitching,independentswitchingandchainswitching 1:1primeservice,1:NandM:Ncongurations Productfaultdetection,validstreamdetection,IPaddressandPortbaseddetection

signaL mOnitOring eQuipment

Whether you need to monitor your signals at the uplink facility

orremotelyduetocrossstrappingorlocalizedfeedsupport,Comtech has a solution for your operations and service group.

ComtechofferssolutionsforIF,RFandbasebandmonitoring.

Comtech also offers specialized products to remotely monitor

signals and backhaul video and data feeds to network operation

centers (NOC) and uplink facilities. We offer ASI baseband

backhaulsolutions,Gig-EbackhaulsolutionsandremoteIRD

monitoring options.

DD240XR DVB Demodulator

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ComtechEFDatareservestherighttochangespecicationsofproductsdescribedinthisdocumentatanytimewithoutnoticeandwithoutobligationtonotifyanypersonofsuchchanges.Informationinthisdocumentmaydiffer

from that published in other Comtech EF Data documents. Refer to the website or contact Customer Service for the latest released product information. May 2009

2114 West 7th Street Tempe, AZ 85281 USA Voice 1.480.333.2200 Fax 1.480.333.2540

E-mail: sales@comtechefdata.com www.comtechefdata.com

mOre infOrmatiOn

Based on a consistent track record of reliability and stability, our market-leading satellite communications technologies

and global acceptance, you can have confidence when you select Comtech as your DTH head-end transmission equipmen

provider. Our solutions can help you increase service offerings, increase ARPU and reduce recurring costs.

Contact us to learn more about how our infrastructure products can be integrated into your network to optimizesatellite communications.