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NTIA Technical Memorandum TM-03-405 Digital Television (DTV) Field Strength and Video Quality Study J. Wayde Allen Ted Mullen U.S. DEPARTMENT OF COMMERCE Donald L. Evans, Secretary Nancy J. Victory, Assistant Secretary for Communications and Information August 2003
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Page 1: Digital Television (DTV) Field Strength and Video Quality ... · 2. Connect the indoor TV antenna to the first DTV receiver. 3. Tune the DTV receiver to an available DTV broadcast.

NTIA Technical Memorandum TM-03-405

Digital Television (DTV) Field Strengthand Video Quality Study

J. Wayde AllenTed Mullen

U.S. DEPARTMENT OF COMMERCEDonald L. Evans, Secretary

Nancy J. Victory, Assistant Secretaryfor Communications and Information

August 2003

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CONTENTS

Page

ABSTRACT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

1. INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

2. THE TEST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22.1HardwareRequirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22.2TestProcedure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22.3Uncertainties. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

3. RESULTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

4. CONCLUSION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

5. REFERENCES. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

APPENDIXA: DATA SETONE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

APPENDIXB: DATA SETTWO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

iii

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DIGITAL TELEVISION (DTV) FIELD STRENGTHAND VIDEO QUALITY STUDY

J.WaydeAllen andTedMullen�

A particularconcernaboutdigital television (DTV) broadcastsis whethersuchbroadcastshavesufficientpower to be receivedusinginexpensive indoor antennaslocatedinsidea typical home. To testthis, theInstitute for TelecommunicationSciences(ITS) constructeda “simulatedhome” mountedon a flatbedtrailer. This allowed ITS to move the testhometo a numberof locationsin thevicinity of anoperatingcommercialDTV transmitter. By equippingthis testhomewith commerciallyavailableDTV receiversandan indoor antennalocatedat the centerof the home,ITS could thenobserve andrecordthe DTVreceptionat a numberof test locations. This informationwasfurther correlatedwith the incidentfieldstrengthsby measuringthesignalpower outsidethestructureat a heightof 10 metersabovegroundandat a locationinsidethestructureat a heightof roughly1.5metersaboveground.This reportsummarizestheresultsof this study.

Key words:digital; field strength;power;quality; reception;television;TV

1 INTRODUCTION

As thedeploymentof digital television (DTV) movesforward,a numberof concernshave beenraisedregardingthepower limits placedon thetechnology. Of particularconcernis whetherreceptionof DTV is possibleusingcommer-cially availableDTV receiversandinexpensivesettop or “rabbit-ears”antennaspositionedat arbitrarylocationsin ahome.Sinceover-the-airDTV broadcastsarecurrentlyavailablein anumberof metropolitanareas,onecantestDTVreceptionin a numberof homesites.However, sincehouseslocatedin differentareasareconstructedusinga varietyof materialsandarenot all furnishedthesameway, analysisof suchdatais difficult. Therearesimply too many vari-ables.If no pictureis obtainedat onelocation,how canonedetermineif the lack of receptionis causedby too littlepower, multi-pathinterferencecausedby reflectionsof theDTV signaloff of nearbyobjects,obstructionof thesignalby interveningstructures,interferenceof thesignalby somelocal noisesource,or differencesin theconstructionofthetwo buildings?

Thereareseveral ways that onecandealwith this problem. Oneapproachis to accountfor asmany variablesaspossible. Another is to try and control the numberof experimentalvariablesin order to make the problemmoretractable. For this test, ITS choseto limit the numberof variablesby constructinga simulatedhomethat couldbe moved to a numberof test locations. This eliminatedthe problemof trying to comparedatataken in differentstructuresandallowedITS to look specificallyathow locationandpoweraffectedthereceptionof DTV signalsinsidea structure.

�Theauthorsarewith the Institutefor TelecommunicationSciences,NationalTelecommunicationsandInformationAdministration,U.S.De-

partmentof Commerce,Boulder, CO 80305.

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2 THE TEST

2.1 Hardware Requirements

Themajorelementsof thetestsetupinclude:

� SimulatedHomeEnclosure

� VHF/UHF IndoorTV Antenna

� Two CommercialDTV Receivers(differentbrandsandchip sets)

� Digital Camcorder

� TV Monitor

� GPSReceiver

� CalibratedDipole Antenna

� SpectrumAnalyzer

To improve the approximationof the enclosureto a typical house,the structureincludeda window in the broadwall, wasinsulatedwith fiberglass,andwaspaneledwith 1/4 inch plywood. All of theequipmentwasassembledasdiagrammedin Figure1.

Both theindoorTV antennaandthecalibrateddipoleantennacouldbemountedinsidethetestenclosureat thesamelocation. This allowed ITS to positionthe indoor TV antennafor recordingthe DTV receiver’s video signal,or tomeasurethefield strengthat this locationusingthecalibrateddipoleandspectrumanalyzer. Additionally, mountingthesamedipoleantennaon a 10-metermastallowedITS to positionit outsidetheenclosureat a heightof 10 metersabovegroundfor anexternalfield strengthmeasurement.Thisheightapproximatesthelocationof anexternalantennalocatedona representativehome.

2.2 Test Procedure

Thefollowing testprocedurewasfollowedat eachof thelocationswhereobservationsweremade.

1. Parktheteststructureatatestlocation.Theorientationof thestructurewasrandomto theextentthatthevehiclecouldlegally andsafelybeparkedat thechosenlocation.

2. ConnecttheindoorTV antennato thefirst DTV receiver.

3. TunetheDTV receiver to anavailableDTV broadcast.In this case,thestationwasKDVR-Denver, locatedonchannel32with acenterfrequency of 581MHz, andauthorizedto broadcastfrom LookoutMountainin Golden,Colorado,with aneffectiveradiatedpowerof 233kW.

4. Choosethefield strengthindicatordisplayfrom themenuon theDTV receiverandadjusttheantennato obtainthebestsignalasreportedby theDTV receiverdisplay. Theantennaadjustmentswereonly thosebuilt into theantenna,namelyrotationandtilt of the loop element.In all casestheantennalocationremainsconstantat thecenterof thetestenclosure.

5. Recordthevideooutputfrom thefirst DTV receiver.

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TV Monitor�

Digital Camcorder

Test Enclosure�

Spectrum Analyzer

Antenna Calibrated DipoleAntenna

Calibrated Dipole

Calibrated DipoleAntenna

Indoor TV

DTV Receiver(s)

(1.5 meters above ground) (1.5 meters above ground)

(On 10-meter mast)

Figure1: Measurementsystemconfiguration.

6. Connectthe indoor TV antennato the secondreceiver, adjust,andrecordthe video aswasdonefor the firstreceiver.

7. ReplacetheindoorTV antennaonthemountingpostin thecenterof theteststructurewith thecalibrateddipoleantennaconnectedto thespectrumanalyzer. Positionthe dipoleelementsin thesameplaneasthe indoorTVantennaelement.

8. ITS wasinterestedin measuringtheupperlimit of thepowersincethis indicatesthemostpoweroneis likely toseeat the testlocation. Sincethe KDVR signalhasa centerfrequency of 581MHz anda nominalbandwidthof 6 MHz, configuringthespectrumanalyzerwith thefollowing settingstakes601peakpower sampleswith a6-MHz bandwidthcenteredat 581MHz:

� CenterFrequency: 581MHz� Span:0 Hz� SweepTime: 100ms� ResolutionBandwidth:6 MHz� VideoBandwidth:6 MHz� PeakDetector

9. Recordthefield strengthtracedatafrom thespectrumanalyzer.

10. ITS wasalsointerestedin recordingtheshapeof theDTV signalenvelope.Thiswasaccomplishedby reconfig-uring thespectrumanalyzerto provide a narrow band(100kHz) power sweepacrossa frequency rangelarger

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than the DTV signal bandwidth. This was doneby reconfiguringthe spectrumanalyzerwith the followingsettings:

� CenterFrequency: 581MHz� Span:10 MHz� SweepTime: 100ms� ResolutionBandwidth:100kHz� VideoBandwidth:100kHz� PeakDetector

11. Recordthetracedatafrom thespectrumanalyzerasconfiguredin 10.

12. Mount thedipoleantennaon the10-metermastandraisethemastinto position.

13. Repeatthesamesetof spectrumanalyzermeasurementsat the10-meterheightwith thespectrumanalyzerresetfor the field strengthmeasurementsas in step8. The onedifferenceis that the analyzer’s detectoris set to“peakhold” sothat theanalyzerindicatesthemaximumsignalwhentheantennais rotatedaboutits axis. Thiseliminatestheneedto find theantennapolarizationgiving themaximumsignalbeforetakinga reading.

14. Rotatethedipolemastaroundits axis360degreesandrecordtheresultingfield strengthtrace.

15. Configurethespectrumanalyzerto recordtheshapeof theDTV signalenvelopeaswasdonein step10.

16. Recordthetracedatashowing theDTV signalenvelopeasseenat 10 meters.

17. Recorda descriptionof thetestlocationandtheGPScoordinates.

2.3 Uncertainties

Sincethis reportis anecdotalin nature,a high degreeof measurementaccuracy wasnot expected.Nevertheless,thefollowing shouldgive thereadera reasonableestimateof theexperimentuncertainty.

For our field strengthmeasurementwe measuredthepower of theDTV signalin a 6-MHz bandwidthandcomputedthefield strengthusingtheexpression[1, pg. 9]:

Fs ��� Pmedian � Gcable�� 77 2 � 20log � f ��� Gantenna (1)

where:

Fs is thefield strength� dBµV m� ,Pmedian is themedianpowercomputedfrom thespectrumanalyzertrace � dBm� ,f is thecenterfrequency in MHz (in this casef � 581),

Gcable is thelossof thecableconnectingtheantennato thespectrumanalyzer(in dB), and

Gantenna is thegainof theantenna(in dBi).

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For ourparticularequipmentour uncertaintiesareestimatedto be:

∆Pmedian ��� 1 dB ��� 26%� (2)

∆Gantenna ��� 2 dB ��� 58%� (3)

∆Gcable ��� 2 dB ��� 58%� (4)

The frequency accuracy given in the spectrumanalyzerdocumentationis � 0 2% of the spanor � 1 2 MHz so thefrequency term canvary from 20log � 579 8� � 55 27 to 20log � 582 2� � 55 30 giving an estimateof ∆20log � f � �� 0 02. Thiscertainlycontributesvery little to theoveralluncertaintyandfor this estimationwill beignored.

Combiningthefractionaluncertaintiesof the∆Pmedian, ∆Gcable, and∆Gantenna termsin anRSSsummationgivesthefollowing estimationfor theType-Bmeasurementuncertainty[2]:

ub ��

∆P2median � ∆G2

cable � ∆G2antenna ��� 0 262 � 0 582 � 0 582 � 0 86 ����� 2 7 dB� (5)

Sincetherearenorepeatdataatany givenpointwith whichto estimateType-Auncertainties[2], this informationmustbeestimatedfrom pastexperience.Similar testingdoneusingtheRadioSpectrumMeasurementSystem(RSMS)hasshown spectrumanalyzermeasurementswith repeatabilityontheorderof � 0 5 dB or approximately� 12%.This is areasonableestimate,andresultsin thefollowing estimateof combineduncertainty

uFs ��

u2a � u2

b � � 0 122 � 0 862 � 0 87 ����� 2 7 dB� (6)

Thisgivesanexpandeduncertaintywith a 95%confidencelimit � k � 2� of

UFs � 2uFs � 1 74 ����� 4 4 dB� (7)

which describesthe“best” measurementaccuracy obtainablewith this testsetup.

3 RESULTS

After collectingdataat eachof thelocations,themedianpeakpowerwascomputedfrom the1.5-meterand10-meterfield strengthtraces(581-MHzcenterfrequency, 0 span,6-MHz resolutionbandwidth).However, sincethis testwasperformedasquickly aspossible,therewerea few instanceswhereourspectrumanalyzertracedatadid notgetsavedto disk. This occurredat locations4, 24,25,26,27,28,29,and30. At theselocationsit wasnot possibleto computea medianandwe were forcedto usethe operator’s handwritten recordof powersreaddirectly from the spectrumanalyzerscreen.Field strengthswerecomputedusingequation1, andtheresultingfield strengthsfrom bothsetsofdataaretabulatedalongwith locationandwhethera television picturewasreceivedon receiver 1 (Rcr 1) or receiver2 (Rcr 2) in Table1. All availabletracedatahasbeenincludedat theendof this documentin AppendixA. A secondsetof datatakena few weekslateris includedin AppendixB. This seconddatasetincludesmeasurementsof therootmeansquare(rms)levelsin additionto thepeakvalues.

A formal quality assessmentof the receivedpicturewasbeyondthe scopeof this experiment.Thedeterminationofwhethera “picture wasreceived” or not wasbasedon thefollowing decisioncriteria: If a receiverwasableto displayapicturefor someportionof theobservationtime,thenthereceptionwasdeemedsuccessfulanda“Y” wasenteredin

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thedatatable. If no picturewasseenat all duringtheobservationtime, thenthereceptionwasdeemedunsuccessfulandan“N” wasrecorded.You mayalsonotea few casesindicatingthatdatawasnot available(NA) for receiver 1.This conditionoccurredearly in thetestbeforeit wasdiscoveredthat thereceiver wasnot properlytunedto the testsignal. Consequently, thereareno datain theselocationsto indicatewhetherthis receiver would have pickedup theDTV transmissionor not.

Thetestlocationshavealsobeenoverlayedontopof afield strengthpredictionmapin Figure2. Hereit is importanttonotethatpeakfield strengthsweremeasuredin orderto understandtheupperboundonthereceivedsignal.In contrast,thecomputermodelscomputeaveragefield strengths,andwill indicatea lower predictedfield strength.Oneshouldalsorecognizethat thecomputermodelsassumethat thestation’s transmitpower andantennapatternexactly matchwhatis on record.Confirmationof this would requiretestingat thetransmitter, which for this studywasnot possible.

Finally, thevideoclips recordedfrom thetestreceiverswerealsoeditedto createa DVD recording.This shows therecordedvideofrom eachreceiveroverlaidwith thelocationandfield strengthdataastabulatedin Table1.

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Table1: FieldStrengthData

Point Location Picture GPSCoordinates FieldStrength� dBµV m�

Rcr1 Rcr2 1.5m 10 m

1 TableMountainRef. pt. Y Y N40� 07 8402� W105� 14 6958� 86 1012 Gunbarrel,King Soopers Y Y N40� 04 3222� W105� 12 1003� 93 1013 Doral, IslandGreenDr. Y Y N40� 04 2713� W105� 11 0340� 93 1024 StrawberryLn., Somerset Y Y N40� 05 5572� W105� 09 1382� 83 1035 CottonwoodSquare Y N N40� 06 0516� W105� 10 1134� 77 906 7056Redwing Y Y N40� 06 1719� W105� 12 2390� 92 1047 GoatFarm,Niwot Rd. Y Y N40� 06 1118� W105� 14 2639� 98 1018 7151Fairways Y Y N40� 06 2669� W105� 15 5877� 96 1029 Foothills BusinessPark N N N40� 05 9479� W105� 17 0364� 81 10010 BustopParkingLot Y Y N40� 03 7998� W105� 16 9621� 92 9911 1501Quincy Y N N40� 02 8992� W105� 16 7355� 79 9112 1080JuniperSt. N N N40� 02 8921� W105� 16 7239� 75 8113 9th andDellwood Y N N40� 01 7173� W105� 17 1381� 76 7714 DOCLabsWing 4 N N N39� 59 6490� W105� 15 6798� 63 7615 NCAR S.ParkingLot Y Y N39� 58 7781� W105� 16� 3634� 89 10316 Bottomof NCAR Hill Y N N39� 59 0710� W105� 16� 0573� 75 8417 1124W. EnclaveCir. Y Y N39� 58 4765� W105� 10 0989� 86 10418 LowesParkingLot Y N N39� 57 7700� W105� 09 9448� 82 9319 ColoradoPlastic Y Y N40� 01 3681� W105� 15 1097� 80 8820 2240FloralDrive N N N40� 01 7978� W105� 16 0332� 63 7421 19th& Grape Y N N40� 02 0266� W105� 16 3373� 69 8422 3155W. SterlingCircle Y Y N40� 01 9156� W105� 13 6665� 84 9523 GartBros.ParkingLot Y Y N40� 02 1557� W105� 15 4693� 89 9824 9920PhillipsRd. Y Y N40� 03 7225� W105� 07 2034� 87 10325 Grangeon 42 Y Y N40� 02 2107� W105� 07 8549� 83 9526 7-11on 42 Y Y N40� 00 9667� W105� 07 8021� 83 8927 SweetwaterCir. NA Y N40� 00 0929� W105� 07 7760� 67 7828 Safeway, S.BoulderRd. NA Y N40� 00 8402� W105� 15 5642� 68 8529 S.Boulder(LDS Church) NA Y N39� 59 3024� W105� 09 2450� 84 9830 95th& S.BoulderRd. NA Y N39� 59 2827� W105� 07 7519� 90 10031 YMCA @ Arapahoe& 95th Y Y N40� 00 779� W105� 08 008� 78 9632 Eagleview & Barnswallow Y Y N40� 07 896� W105� 07 497� 78 9233 BoulderCountyFairgrounds Y Y N40� 09 500� W105� 07 754� 79 9534 Safeway N. HoverRd. Y N N40� 11 177� W105� 07 804� 78 9335 Peppier& WindingDr. Y Y N40� 12 100� W105� 05 310� 81 9436 I25 & 66th Y Y N40� 12 333� W104� 58 456� 93 10537 Sportman’sWarehouse Y Y N40� 24 759� W105� 00 242� 83 9338 Harmony & Timberline Y N N40� 32 453� W105� 02 297� 70 8439 4900Boardwalk Y N N40� 31 083� W105� 03 746� 70 8340 Ranch& Holyoke N N N40� 29 559� W105� 05 254� 63 6641 LakeLoveland Y N N40� 25 130� W105� 05 670� 70 8642 BerthoudPark Y N N40� 25 131� W105� 05 670� 74 77

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Figure2: Mapshowing testlocations.

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4 CONCLUSION

This testprovidesanindicationof how well DTV signalscanbereceivedin theBoulderareafrom anexisting stationlocatedonLookoutMountainandoperatingwith aneffectiveradiatedpowerof 233kW. It alsomakesclearthatpoweraloneis not theonly variableto consider. This is particularlyevidentat location9 (Figures34 - 37) whereno videowasobtainedfrom eitherof thetestreceiverseventhoughthereis asignificantfield strengthat this location.Comparethis for instancewith location19 (Figures74 - 77) wherethereis lessfield strengththanat location9 andvideowasobtainedfrom bothreceivers.Of particularinterestarethedifferencesbetweenthetwo graphsseenin Figure35 andFigure75. Figure35 shows that in spiteof therebeingmorepower at this location,theshapeof theDTV signalhasbeendistorted,presumablyby multi-patheffects,suchthatthereceiveris unableto reconstructthedigital videostreameventhoughthereis morepower availableat this location. Power level is clearlynot theonly importantvariableforthereceptionof DTV.

A muchmorecomprehensive studycould be conductedto help quantify DTV imagequality. Suchan experimentcould look for not only correlationbetweensignalpower andreceivedvideoquality, but alsocorrelationswith suchdeleteriouseffectsasmulti-pathinterference,shielding,andnoise.

5 REFERENCES

[1] C. L. Holloway, F. H. Sanders,andP. M. McKenna, “Predictedandmeasuredfield strengthsin the Boulder,Colorado,areafrom two proposedterrestrialdigital television tower sites,” NTIA Report01-387and NISTTechnicalNote1519,May 2001.

[2] B. N. Taylor andC. E. Kuyatt, “Guidelinesfor evaluatingandexpressingtheuncertaintyof NIST measurementresults,” NIST TechnicalNote1297,NationalInstituteof StandardsandTechnology,1994.

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APPENDIX A: DATA SET ONE

Thefollowing graphsshow thespectrumanalyzertracedatacollectedduringthefirst partof thestudy. As hasalreadybeennoted,therearea few locationswhereno tracedatawassavedto disk. Theselocationswere:4, 24,25,26,27,28,29,30,andconsequentlytherearegraphsmissingat theselocations.

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-55

-50

-45

-40

-35

-30

0 0.02 0.04 0.06 0.08 0.1

Pow

er (

dBm

)

Time (Seconds)

Point 1 @ 1.5 metersMedian

Figure3: Powerat1.5metersin location1.

-130

-120

-110

-100

-90

-80

-70

5.76e+08 5.78e+08 5.8e+08 5.82e+08 5.84e+08 5.86e+08

Pow

er (

dBm

)

Frequency (Hz)

Point 1 @ 1.5 meters

Figure4: DTV envelopeat 1.5metersin location1.

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-37

-36.5

-36

-35.5

-35

-34.5

-34

-33.5

-33

0 0.0002 0.0004 0.0006 0.0008 0.001 0.0012

Pow

er (

dBm

)

Time (Seconds)

Point 1 @ 10 metersMedian

Figure5: Powerat 10 metersin location1.

-120

-110

-100

-90

-80

-70

-60

-50

5.76e+08 5.78e+08 5.8e+08 5.82e+08 5.84e+08 5.86e+08

Pow

er (

dBm

)

Frequency (Hz)

Point 1 @ 10 meters

Figure6: DTV envelopeat 10 metersin location1.

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-45.5

-45

-44.5

-44

-43.5

-43

-42.5

-42

-41.5

0 0.0002 0.0004 0.0006 0.0008 0.001 0.0012

Pow

er (

dBm

)

Time (Seconds)

Point 2 @ 1.5 metersMedian

Figure7: Powerat1.5metersin location2.

-120

-110

-100

-90

-80

-70

-60

-50

5.76e+08 5.78e+08 5.8e+08 5.82e+08 5.84e+08 5.86e+08

Pow

er (

dBm

)

Frequency (Hz)

Point 2 @ 1.5 meters

Figure8: DTV envelopeat 1.5metersin location2.

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-37.5

-37

-36.5

-36

-35.5

-35

-34.5

-34

0 0.0002 0.0004 0.0006 0.0008 0.001

Pow

er (

dBm

)

Time (Seconds)

Point 2 @ 10 metersMedian

Figure9: Powerat 10 metersin location2.

-120

-110

-100

-90

-80

-70

-60

-50

5.76e+08 5.78e+08 5.8e+08 5.82e+08 5.84e+08 5.86e+08

Pow

er (

dBm

)

Frequency (Hz)

Point 2 @ 10 meters

Figure10: DTV envelopeat 10 metersin location2.

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-46

-45

-44

-43

-42

-41

-40

-39

-38

-37

-36

0 0.02 0.04 0.06 0.08 0.1

Pow

er (

dBm

)

Time (Seconds)

Point 3 @ 1.5 metersMedian

Figure11: Powerat 1.5metersin location3.

-95

-90

-85

-80

-75

-70

-65

-60

-55

5.76e+08 5.78e+08 5.8e+08 5.82e+08 5.84e+08 5.86e+08

Pow

er (

dBm

)

Frequency (Hz)

Point 3 @ 1.5 meters

Figure12: DTV envelopeat1.5metersin location3.

16

Page 21: Digital Television (DTV) Field Strength and Video Quality ... · 2. Connect the indoor TV antenna to the first DTV receiver. 3. Tune the DTV receiver to an available DTV broadcast.

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-31

-30

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0 0.02 0.04 0.06 0.08 0.1

Pow

er (

dBm

)

Time (Seconds)

Point 3 @ 10 metersMedian

Figure13: Powerat 10metersin location3.

-95

-90

-85

-80

-75

-70

-65

-60

-55

-50

-45

5.76e+08 5.78e+08 5.8e+08 5.82e+08 5.84e+08 5.86e+08

Pow

er (

dBm

)

Frequency (Hz)

Point 3 @ 10 meters

Figure14: DTV envelopeat 10 metersin location3.

17

Page 22: Digital Television (DTV) Field Strength and Video Quality ... · 2. Connect the indoor TV antenna to the first DTV receiver. 3. Tune the DTV receiver to an available DTV broadcast.

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-53

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-50

-49

-48

0 0.02 0.04 0.06 0.08 0.1

Pow

er (

dBm

)

Time (Seconds)

Point 4 @ 1.5 metersMedian

Figure15: Powerat 1.5metersin location4.

-95

-90

-85

-80

-75

-70

-65

-60

5.76e+08 5.78e+08 5.8e+08 5.82e+08 5.84e+08 5.86e+08

Pow

er (

dBm

)

Frequency (Hz)

Point 4 @ 1.5 meters

Figure16: DTV envelopeat1.5metersin location4.

18

Page 23: Digital Television (DTV) Field Strength and Video Quality ... · 2. Connect the indoor TV antenna to the first DTV receiver. 3. Tune the DTV receiver to an available DTV broadcast.

-90

-85

-80

-75

-70

-65

-60

5.76e+08 5.78e+08 5.8e+08 5.82e+08 5.84e+08 5.86e+08

Pow

er (

dBm

)

Frequency (Hz)

Point 4 @ 10 meters

Figure17: DTV envelopeat 10 metersin location4.

19

Page 24: Digital Television (DTV) Field Strength and Video Quality ... · 2. Connect the indoor TV antenna to the first DTV receiver. 3. Tune the DTV receiver to an available DTV broadcast.

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-55

-50

-45

-40

-35

-30

0 0.02 0.04 0.06 0.08 0.1

Pow

er (

dBm

)

Time (Seconds)

Point 5 @ 1.5 metersMedian

Figure18: Powerat 1.5metersin location5.

-94

-92

-90

-88

-86

-84

-82

-80

-78

-76

-74

-72

5.76e+08 5.78e+08 5.8e+08 5.82e+08 5.84e+08 5.86e+08

Pow

er (

dBm

)

Frequency (Hz)

Point 5 @ 1.5 meters

Figure19: DTV envelopeat1.5metersin location5.

20

Page 25: Digital Television (DTV) Field Strength and Video Quality ... · 2. Connect the indoor TV antenna to the first DTV receiver. 3. Tune the DTV receiver to an available DTV broadcast.

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-47

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-45

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-41

-40

0 0.02 0.04 0.06 0.08 0.1

Pow

er (

dBm

)

Time (Seconds)

Point 5 @ 10 metersMedian

Figure20: Powerat 10metersin location5.

-95

-90

-85

-80

-75

-70

-65

-60

-55

5.76e+08 5.78e+08 5.8e+08 5.82e+08 5.84e+08 5.86e+08

Pow

er (

dBm

)

Frequency (Hz)

Point 5 @ 10 meters

Figure21: DTV envelopeat 10 metersin location5.

21

Page 26: Digital Television (DTV) Field Strength and Video Quality ... · 2. Connect the indoor TV antenna to the first DTV receiver. 3. Tune the DTV receiver to an available DTV broadcast.

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-39

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-37

0 0.02 0.04 0.06 0.08 0.1

Pow

er (

dBm

)

Time (Seconds)

Point 6 @ 1.5 metersMedian

Figure22: Powerat 1.5metersin location6.

-95

-90

-85

-80

-75

-70

-65

-60

-55

5.76e+08 5.78e+08 5.8e+08 5.82e+08 5.84e+08 5.86e+08

Pow

er (

dBm

)

Frequency (Hz)

Point 6 @ 1.5 meters

Figure23: DTV envelopeat1.5metersin location6.

22

Page 27: Digital Television (DTV) Field Strength and Video Quality ... · 2. Connect the indoor TV antenna to the first DTV receiver. 3. Tune the DTV receiver to an available DTV broadcast.

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-34

-33

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-29

-28

-27

-26

0 0.02 0.04 0.06 0.08 0.1

Pow

er (

dBm

)

Time (Seconds)

Point 6 @ 10 metersMedian

Figure24: Powerat 10metersin location6.

-95

-90

-85

-80

-75

-70

-65

-60

-55

-50

-45

5.76e+08 5.78e+08 5.8e+08 5.82e+08 5.84e+08 5.86e+08

Pow

er (

dBm

)

Frequency (Hz)

Point 6 @ 10 meters

Figure25: DTV envelopeat 10 metersin location6.

23

Page 28: Digital Television (DTV) Field Strength and Video Quality ... · 2. Connect the indoor TV antenna to the first DTV receiver. 3. Tune the DTV receiver to an available DTV broadcast.

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-35

-34

-33

0 0.02 0.04 0.06 0.08 0.1

Pow

er (

dBm

)

Time (Seconds)

Point 7 @ 1.5 metersMedian

Figure26: Powerat 1.5metersin location7.

-95

-90

-85

-80

-75

-70

-65

-60

-55

-50

5.76e+08 5.78e+08 5.8e+08 5.82e+08 5.84e+08 5.86e+08

Pow

er (

dBm

)

Frequency (Hz)

Point 7 @ 1.5 meters

Figure27: DTV envelopeat1.5metersin location7.

24

Page 29: Digital Television (DTV) Field Strength and Video Quality ... · 2. Connect the indoor TV antenna to the first DTV receiver. 3. Tune the DTV receiver to an available DTV broadcast.

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-32

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0 0.02 0.04 0.06 0.08 0.1

Pow

er (

dBm

)

Time (Seconds)

Point 7 @ 10 metersMedian

Figure28: Powerat 10metersin location7.

-95

-90

-85

-80

-75

-70

-65

-60

-55

-50

5.76e+08 5.78e+08 5.8e+08 5.82e+08 5.84e+08 5.86e+08

Pow

er (

dBm

)

Frequency (Hz)

Point 7 @ 10 meters

Figure29: DTV envelopeat 10 metersin location7.

25

Page 30: Digital Television (DTV) Field Strength and Video Quality ... · 2. Connect the indoor TV antenna to the first DTV receiver. 3. Tune the DTV receiver to an available DTV broadcast.

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-35

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0 0.02 0.04 0.06 0.08 0.1

Pow

er (

dBm

)

Time (Seconds)

Point 8 @ 1.5 metersMedian

Figure30: Powerat 1.5metersin location8.

-95

-90

-85

-80

-75

-70

-65

-60

-55

5.76e+08 5.78e+08 5.8e+08 5.82e+08 5.84e+08 5.86e+08

Pow

er (

dBm

)

Frequency (Hz)

Point 8 @ 1.5 meters

Figure31: DTV envelopeat1.5metersin location8.

26

Page 31: Digital Television (DTV) Field Strength and Video Quality ... · 2. Connect the indoor TV antenna to the first DTV receiver. 3. Tune the DTV receiver to an available DTV broadcast.

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-36

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-34

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-31

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-29

0 0.02 0.04 0.06 0.08 0.1

Pow

er (

dBm

)

Time (Seconds)

Point 8 @ 10 metersMedian

Figure32: Powerat 10metersin location8.

-95

-90

-85

-80

-75

-70

-65

-60

-55

-50

5.76e+08 5.78e+08 5.8e+08 5.82e+08 5.84e+08 5.86e+08

Pow

er (

dBm

)

Frequency (Hz)

Point 8 @ 10 meters

Figure33: DTV envelopeat 10 metersin location8.

27

Page 32: Digital Television (DTV) Field Strength and Video Quality ... · 2. Connect the indoor TV antenna to the first DTV receiver. 3. Tune the DTV receiver to an available DTV broadcast.

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-53

-52

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-50

-49

0 0.02 0.04 0.06 0.08 0.1

Pow

er (

dBm

)

Time (Seconds)

Point 9 @ 1.5 metersMedian

Figure34: Powerat 1.5metersin location9.

-95

-90

-85

-80

-75

-70

-65

5.76e+08 5.78e+08 5.8e+08 5.82e+08 5.84e+08 5.86e+08

Pow

er (

dBm

)

Frequency (Hz)

Point 9 @ 1.5 meters

Figure35: DTV envelopeat1.5metersin location9.

28

Page 33: Digital Television (DTV) Field Strength and Video Quality ... · 2. Connect the indoor TV antenna to the first DTV receiver. 3. Tune the DTV receiver to an available DTV broadcast.

-39

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-37

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-34

-33

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0 0.02 0.04 0.06 0.08 0.1

Pow

er (

dBm

)

Time (Seconds)

Point 9 @ 10 metersMedian

Figure36: Powerat 10metersin location9.

-95

-90

-85

-80

-75

-70

-65

-60

-55

-50

-45

5.76e+08 5.78e+08 5.8e+08 5.82e+08 5.84e+08 5.86e+08

Pow

er (

dBm

)

Frequency (Hz)

Point 9 @ 10 meters

Figure37: DTV envelopeat 10 metersin location9.

29

Page 34: Digital Television (DTV) Field Strength and Video Quality ... · 2. Connect the indoor TV antenna to the first DTV receiver. 3. Tune the DTV receiver to an available DTV broadcast.

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-41

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-39

0 0.02 0.04 0.06 0.08 0.1

Pow

er (

dBm

)

Time (Seconds)

Point 10 @ 1.5 metersMedian

Figure38: Powerat1.5metersin location10.

-95

-90

-85

-80

-75

-70

-65

-60

-55

5.76e+08 5.78e+08 5.8e+08 5.82e+08 5.84e+08 5.86e+08

Pow

er (

dBm

)

Frequency (Hz)

Point 10 @ 1.5 meters

Figure39: DTV envelopeat 1.5metersin location10.

30

Page 35: Digital Television (DTV) Field Strength and Video Quality ... · 2. Connect the indoor TV antenna to the first DTV receiver. 3. Tune the DTV receiver to an available DTV broadcast.

-40

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-34

-33

-32

0 0.02 0.04 0.06 0.08 0.1

Pow

er (

dBm

)

Time (Seconds)

Point 10 @ 10 metersMedian

Figure40: Powerat 10 metersin location10.

-95

-90

-85

-80

-75

-70

-65

-60

-55

-50

5.76e+08 5.78e+08 5.8e+08 5.82e+08 5.84e+08 5.86e+08

Pow

er (

dBm

)

Frequency (Hz)

Point 10 @ 10 meters

Figure41: DTV envelopeat 10 metersin location10.

31

Page 36: Digital Television (DTV) Field Strength and Video Quality ... · 2. Connect the indoor TV antenna to the first DTV receiver. 3. Tune the DTV receiver to an available DTV broadcast.

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-59

-58

-57

-56

-55

-54

-53

-52

0 0.005 0.01 0.015 0.02

Pow

er (

dBm

)

Time (Seconds)

Point 11 @ 1.5 metersMedian

Figure42: Powerat1.5metersin location11.

-95

-90

-85

-80

-75

-70

5.76e+08 5.78e+08 5.8e+08 5.82e+08 5.84e+08 5.86e+08

Pow

er (

dBm

)

Frequency (Hz)

Point 11 @ 1.5 meters

Figure43: DTV envelopeat 1.5metersin location11.

32

Page 37: Digital Television (DTV) Field Strength and Video Quality ... · 2. Connect the indoor TV antenna to the first DTV receiver. 3. Tune the DTV receiver to an available DTV broadcast.

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-47

-46

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-41

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-39

0 0.02 0.04 0.06 0.08 0.1

Pow

er (

dBm

)

Time (Seconds)

Point 11 @ 10 metersMedian

Figure44: Powerat 10 metersin location11.

-95

-90

-85

-80

-75

-70

-65

-60

-55

5.76e+08 5.78e+08 5.8e+08 5.82e+08 5.84e+08 5.86e+08

Pow

er (

dBm

)

Frequency (Hz)

Point 11 @ 10 meters

Figure45: DTV envelopeat 10 metersin location11.

33

Page 38: Digital Television (DTV) Field Strength and Video Quality ... · 2. Connect the indoor TV antenna to the first DTV receiver. 3. Tune the DTV receiver to an available DTV broadcast.

-70

-65

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-55

-50

-45

-40

0 0.02 0.04 0.06 0.08 0.1

Pow

er (

dBm

)

Time (Seconds)

Point 12 @ 1.5 metersMedian

Figure46: Powerat1.5metersin location12.

-92

-91

-90

-89

-88

-87

-86

-85

-84

-83

5.76e+08 5.78e+08 5.8e+08 5.82e+08 5.84e+08 5.86e+08

Pow

er (

dBm

)

Frequency (Hz)

Point 12 @ 1.5 meters

Figure47: DTV envelopeat 1.5metersin location12.

34

Page 39: Digital Television (DTV) Field Strength and Video Quality ... · 2. Connect the indoor TV antenna to the first DTV receiver. 3. Tune the DTV receiver to an available DTV broadcast.

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-53

-52

-51

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0 0.02 0.04 0.06 0.08 0.1

Pow

er (

dBm

)

Time (Seconds)

Point 12 @ 10 metersMedian

Figure48: Powerat 10 metersin location12.

-95

-90

-85

-80

-75

-70

5.76e+08 5.78e+08 5.8e+08 5.82e+08 5.84e+08 5.86e+08

Pow

er (

dBm

)

Frequency (Hz)

Point 12 @ 10 meters

Figure49: DTV envelopeat 10 metersin location12.

35

Page 40: Digital Television (DTV) Field Strength and Video Quality ... · 2. Connect the indoor TV antenna to the first DTV receiver. 3. Tune the DTV receiver to an available DTV broadcast.

-64

-63

-62

-61

-60

-59

-58

-57

-56

0 0.02 0.04 0.06 0.08 0.1

Pow

er (

dBm

)

Time (Seconds)

Point 13 @ 1.5 metersMedian

Figure50: Powerat1.5metersin location13.

-94

-92

-90

-88

-86

-84

-82

-80

5.76e+08 5.78e+08 5.8e+08 5.82e+08 5.84e+08 5.86e+08

Pow

er (

dBm

)

Frequency (Hz)

Point 13 @ 1.5 meters

Figure51: DTV envelopeat 1.5metersin location13.

36

Page 41: Digital Television (DTV) Field Strength and Video Quality ... · 2. Connect the indoor TV antenna to the first DTV receiver. 3. Tune the DTV receiver to an available DTV broadcast.

-63

-62

-61

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-54

0 0.02 0.04 0.06 0.08 0.1

Pow

er (

dBm

)

Time (Seconds)

Point 13 @ 10 metersMedian

Figure52: Powerat 10 metersin location13.

-92

-90

-88

-86

-84

-82

-80

-78

-76

-74

5.76e+08 5.78e+08 5.8e+08 5.82e+08 5.84e+08 5.86e+08

Pow

er (

dBm

)

Frequency (Hz)

Point 13 @ 10 meters

Figure53: DTV envelopeat 10 metersin location13.

37

Page 42: Digital Television (DTV) Field Strength and Video Quality ... · 2. Connect the indoor TV antenna to the first DTV receiver. 3. Tune the DTV receiver to an available DTV broadcast.

-76

-75.5

-75

-74.5

-74

-73.5

-73

-72.5

-72

0 0.0002 0.0004 0.0006 0.0008 0.001 0.0012

Pow

er (

dBm

)

Time (Seconds)

Point 14 @ 1.5 metersMedian

Figure54: Powerat1.5metersin location14.

-130

-125

-120

-115

-110

-105

-100

-95

-90

5.76e+08 5.78e+08 5.8e+08 5.82e+08 5.84e+08 5.86e+08

Pow

er (

dBm

)

Frequency (Hz)

Point 14 @ 1.5 meters

Figure55: DTV envelopeat 1.5metersin location14.

38

Page 43: Digital Television (DTV) Field Strength and Video Quality ... · 2. Connect the indoor TV antenna to the first DTV receiver. 3. Tune the DTV receiver to an available DTV broadcast.

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-62

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0 0.02 0.04 0.06 0.08 0.1

Pow

er (

dBm

)

Time (Seconds)

Point 14 @ 10 metersMedian

Figure56: Powerat 10 metersin location14.

-120

-115

-110

-105

-100

-95

-90

-85

-80

5.76e+08 5.78e+08 5.8e+08 5.82e+08 5.84e+08 5.86e+08

Pow

er (

dBm

)

Frequency (Hz)

Point 14 @ 10 meters

Figure57: DTV envelopeat 10 metersin location14.

39

Page 44: Digital Television (DTV) Field Strength and Video Quality ... · 2. Connect the indoor TV antenna to the first DTV receiver. 3. Tune the DTV receiver to an available DTV broadcast.

-49.5

-49

-48.5

-48

-47.5

-47

-46.5

-46

-45.5

0 0.0002 0.0004 0.0006 0.0008 0.001 0.0012

Pow

er (

dBm

)

Time (Seconds)

Point 15 @ 1.5 metersMedian

Figure58: Powerat1.5metersin location15.

-100

-95

-90

-85

-80

-75

-70

-65

5.76e+08 5.78e+08 5.8e+08 5.82e+08 5.84e+08 5.86e+08

Pow

er (

dBm

)

Frequency (Hz)

Point 15 @ 1.5 meters

Figure59: DTV envelopeat 1.5metersin location15.

40

Page 45: Digital Television (DTV) Field Strength and Video Quality ... · 2. Connect the indoor TV antenna to the first DTV receiver. 3. Tune the DTV receiver to an available DTV broadcast.

-35.5

-35

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-34

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-33

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0 0.0002 0.0004 0.0006 0.0008 0.001 0.0012

Pow

er (

dBm

)

Time (Seconds)

Point 15 @ 10 metersMedian

Figure60: Powerat 10 metersin location15.

-120

-110

-100

-90

-80

-70

-60

-50

5.76e+08 5.78e+08 5.8e+08 5.82e+08 5.84e+08 5.86e+08

Pow

er (

dBm

)

Frequency (Hz)

Point 15 @ 10 meters

Figure61: DTV envelopeat 10 metersin location15.

41

Page 46: Digital Television (DTV) Field Strength and Video Quality ... · 2. Connect the indoor TV antenna to the first DTV receiver. 3. Tune the DTV receiver to an available DTV broadcast.

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0 0.0002 0.0004 0.0006 0.0008 0.001 0.0012

Pow

er (

dBm

)

Time (Seconds)

Point 16 @ 1.5 metersMedian

Figure62: Powerat1.5metersin location16.

-120

-115

-110

-105

-100

-95

-90

-85

-80

-75

5.76e+08 5.78e+08 5.8e+08 5.82e+08 5.84e+08 5.86e+08

Pow

er (

dBm

)

Frequency (Hz)

Point 16 @ 1.5 meters

Figure63: DTV envelopeat 1.5metersin location16.

42

Page 47: Digital Television (DTV) Field Strength and Video Quality ... · 2. Connect the indoor TV antenna to the first DTV receiver. 3. Tune the DTV receiver to an available DTV broadcast.

-55

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-53

-52

-51

-50

-49

-48

0 0.0002 0.0004 0.0006 0.0008 0.001 0.0012

Pow

er (

dBm

)

Time (Seconds)

Point 16 @ 10 metersMedian

Figure64: Powerat 10 metersin location16.

-120

-110

-100

-90

-80

-70

-60

5.76e+08 5.78e+08 5.8e+08 5.82e+08 5.84e+08 5.86e+08

Pow

er (

dBm

)

Frequency (Hz)

Point 16 @ 10 meters

Figure65: DTV envelopeat 10 metersin location16.

43

Page 48: Digital Television (DTV) Field Strength and Video Quality ... · 2. Connect the indoor TV antenna to the first DTV receiver. 3. Tune the DTV receiver to an available DTV broadcast.

-52.5

-52

-51.5

-51

-50.5

-50

-49.5

-49

-48.5

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-47.5

0 0.0002 0.0004 0.0006 0.0008 0.001 0.0012

Pow

er (

dBm

)

Time (Seconds)

Point 17 @ 1.5 metersMedian

Figure66: Powerat1.5metersin location17.

-120

-110

-100

-90

-80

-70

-60

5.76e+08 5.78e+08 5.8e+08 5.82e+08 5.84e+08 5.86e+08

Pow

er (

dBm

)

Frequency (Hz)

Point 17 @ 1.5 meters

Figure67: DTV envelopeat 1.5metersin location17.

44

Page 49: Digital Television (DTV) Field Strength and Video Quality ... · 2. Connect the indoor TV antenna to the first DTV receiver. 3. Tune the DTV receiver to an available DTV broadcast.

-34.5

-34

-33.5

-33

-32.5

-32

-31.5

-31

-30.5

-30

0 0.0002 0.0004 0.0006 0.0008 0.001 0.0012

Pow

er (

dBm

)

Time (Seconds)

Point 17 @ 10 metersMedian

Figure68: Powerat 10 metersin location17.

-120

-110

-100

-90

-80

-70

-60

-50

-40

5.76e+08 5.78e+08 5.8e+08 5.82e+08 5.84e+08 5.86e+08

Pow

er (

dBm

)

Frequency (Hz)

Point 17 @ 10 meters

Figure69: DTV envelopeat 10 metersin location17.

45

Page 50: Digital Television (DTV) Field Strength and Video Quality ... · 2. Connect the indoor TV antenna to the first DTV receiver. 3. Tune the DTV receiver to an available DTV broadcast.

-56.5

-56

-55.5

-55

-54.5

-54

-53.5

-53

-52.5

0 0.0002 0.0004 0.0006 0.0008 0.001 0.0012

Pow

er (

dBm

)

Time (Seconds)

Point 18 @ 1.5 metersMedian

Figure70: Powerat1.5metersin location18.

-120

-115

-110

-105

-100

-95

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Figure71: DTV envelopeat 1.5metersin location18.

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Figure72: Powerat 10 metersin location18.

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Figure73: DTV envelopeat 10 metersin location18.

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Figure74: Powerat1.5metersin location19.

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Figure75: DTV envelopeat 1.5metersin location19.

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Figure76: Powerat 10 metersin location19.

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Figure77: DTV envelopeat 10 metersin location19.

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Figure78: Powerat1.5metersin location20.

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Figure79: DTV envelopeat 1.5metersin location20.

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Figure80: Powerat 10 metersin location20.

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Figure81: DTV envelopeat 10 metersin location20.

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Figure82: Powerat1.5metersin location21.

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Figure83: DTV envelopeat 1.5metersin location21.

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Figure84: Powerat 10 metersin location21.

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Figure85: DTV envelopeat 10 metersin location21.

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Figure86: Powerat1.5metersin location22.

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Figure87: DTV envelopeat 1.5metersin location22.

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Figure88: Powerat 10 metersin location22.

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Figure89: DTV envelopeat 10 metersin location22.

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Figure90: Powerat1.5metersin location23.

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Figure91: DTV envelopeat 1.5metersin location23.

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Figure92: Powerat 10 metersin location23.

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Figure93: DTV envelopeat 10 metersin location23.

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APPENDIX B: DATA SET TWO

After gatheringthedatapresentedin AppendixA it wasrequestedthatmoredatabecollectedin theareato theNorthandEastof thecity of Boulder. Additionally wewereaskedto includemeasurementsof therootmeansquare(rms)levelsin additionto thepeakvaluesasreportedin thefirst dataset.Themeasuredfield strengthsareshown inTable2, andthegraphsin Figures94–141show thespectrumanalyzertracedata.

Table2: Test2 MeasurementResults

Point Picture FieldStrengthat 1.5meters Field Strengthat 10meters

Rcr 1 Rcr 2 peak rms peak rms� dBµV m� � dBµV m� � dBµV m� � dBµV m�

31 Y Y 78 70 96 8732 Y Y 78 69 92 8433 Y Y 79 70 95 8734 Y N 78 68 93 8535 Y Y 81 72 94 8636 Y Y 93 85 105 9837 Y Y 83 74 93 8438 Y N 70 61 84 7639 Y N 70 61 83 7540 N N 63 52 66 6641 Y N 70 61 86 7742 Y N 74 68 77 68

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Figure94: Powerat1.5metersin location31.

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Figure95: DTV envelopeat 1.5metersin location31.

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Figure96: Powerat 10 metersin location31.

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Figure97: DTV envelopeat 10 metersin location31.

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Figure98: Powerat1.5metersin location32.

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Figure99: DTV envelopeat 1.5metersin location32.

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Figure100:Powerat 10metersin location32.

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Figure101: DTV envelopeat 10 metersin location32.

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Figure102: Powerat 1.5metersin location33.

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Figure103:DTV envelopeat1.5metersin location33.

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Figure104:Powerat 10metersin location33.

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Figure105: DTV envelopeat 10 metersin location33.

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Figure106: Powerat 1.5metersin location34.

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Figure107:DTV envelopeat1.5metersin location34.

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Figure108:Powerat 10metersin location34.

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Figure109: DTV envelopeat 10 metersin location34.

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Figure110: Powerat 1.5metersin location35.

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Figure111:DTV envelopeat1.5metersin location35.

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Figure112:Powerat 10metersin location35.

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Figure113: DTV envelopeat 10 metersin location35.

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Figure114: Powerat 1.5metersin location36.

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Figure115:DTV envelopeat1.5metersin location36.

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Figure116:Powerat 10metersin location36.

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Figure117: DTV envelopeat 10 metersin location36.

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Figure118: Powerat 1.5metersin location37.

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Figure119:DTV envelopeat1.5metersin location37.

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Figure120:Powerat 10metersin location37.

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Figure121: DTV envelopeat 10 metersin location37.

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Figure122: Powerat 1.5metersin location38.

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Figure123:DTV envelopeat1.5metersin location38.

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Figure124:Powerat 10metersin location38.

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Figure125: DTV envelopeat 10 metersin location38.

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Figure126: Powerat 1.5metersin location39.

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Figure127:DTV envelopeat1.5metersin location39.

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0 0.02 0.04 0.06 0.08 0.1

Pow

er (

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Time (Seconds)

Point 39 @ 10 meters: peak tracerms trace

median value (peak)median value (rms)

Figure128:Powerat 10metersin location39.

-105

-100

-95

-90

-85

-80

-75

-70

-65

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5.76e+08 5.78e+08 5.8e+08 5.82e+08 5.84e+08 5.86e+08

Pow

er (

dBm

)

Frequency (Hz)

Point 39 @ 10 meters

Figure129: DTV envelopeat 10 metersin location39.

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Time (Seconds)

Point 40 @ 1.5 meters: peak tracerms trace

median value (peak)median value (rms)

Figure130: Powerat 1.5metersin location40.

-102

-100

-98

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-94

-92

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5.76e+08 5.78e+08 5.8e+08 5.82e+08 5.84e+08 5.86e+08

Pow

er (

dBm

)

Frequency (Hz)

Point 40 @ 1.5 meters

Figure131:DTV envelopeat1.5metersin location40.

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0 0.02 0.04 0.06 0.08 0.1

Pow

er (

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Time (Seconds)

Point 40 @ 10 meters: peak tracerms trace

median value (peak)median value (rms)

Figure132:Powerat 10metersin location40.

-105

-100

-95

-90

-85

-80

-75

-70

5.76e+08 5.78e+08 5.8e+08 5.82e+08 5.84e+08 5.86e+08

Pow

er (

dBm

)

Frequency (Hz)

Point 40 @ 10 meters

Figure133: DTV envelopeat 10 metersin location40.

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Time (Seconds)

Point 41 @ 1.5 meters: peak tracerms trace

median value (peak)median value (rms)

Figure134: Powerat 1.5metersin location41.

-102

-100

-98

-96

-94

-92

-90

-88

-86

-84

-82

-80

5.76e+08 5.78e+08 5.8e+08 5.82e+08 5.84e+08 5.86e+08

Pow

er (

dBm

)

Frequency (Hz)

Point 41 @ 1.5 meters

Figure135:DTV envelopeat1.5metersin location41.

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Time (Seconds)

Point 41 @ 10 meters: peak tracerms trace

median value (peak)median value (rms)

Figure136:Powerat 10metersin location41.

-105

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-95

-90

-85

-80

-75

-70

-65

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5.76e+08 5.78e+08 5.8e+08 5.82e+08 5.84e+08 5.86e+08

Pow

er (

dBm

)

Frequency (Hz)

Point 41 @ 10 meters

Figure137: DTV envelopeat 10 metersin location41.

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Pow

er (

dBm

)

Time (Seconds)

Point 42 @ 1.5 meters: peak tracerms trace

median value (peak)median value (rms)

Figure138: Powerat 1.5metersin location42.

-105

-100

-95

-90

-85

-80

-75

-70

5.76e+08 5.78e+08 5.8e+08 5.82e+08 5.84e+08 5.86e+08

Pow

er (

dBm

)

Frequency (Hz)

Point 42 @ 1.5 meters

Figure139:DTV envelopeat1.5metersin location42.

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0 0.02 0.04 0.06 0.08 0.1

Pow

er (

dBm

)

Time (Seconds)

Point 42 @ 10 meters: peak tracerms trace

median value (peak)median value (rms)

Figure140:Powerat 10metersin location42.

-105

-100

-95

-90

-85

-80

-75

5.76e+08 5.78e+08 5.8e+08 5.82e+08 5.84e+08 5.86e+08

Pow

er (

dBm

)

Frequency (Hz)

Point 42 @ 10 meters

Figure141: DTV envelopeat 10 metersin location42.

82


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