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Digital Low Power TV and TV Digital Low Power TV and TV Translator Rules and PoliciesTranslator Rules and Policies
AFCCE Luncheon AFCCE Luncheon
January 20, 2006January 20, 2006
[email protected] (202) 418-2607 [email protected] (202) 418-1600
NO!
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Digital LPTV Is Here!
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Report and Order (MB Docket No. 03–185)Adopted: September 9, 2004
TopicsTopics
LPTV/translator digital transitionLPTV/translator digital transition
Means of digital conversionMeans of digital conversion
Spectrum Spectrum
Interference protectionInterference protection
Other technical criteriaOther technical criteria
Permissible servicePermissible service
GoalsGoals– Hasten transition to digital serviceHasten transition to digital service– Minimize disruption of existing serviceMinimize disruption of existing service
Analog TV Digital TV
40%20% 60%
80%0%
Where are we?
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If and when must Class A, LPTV, and TV translators convert to digital and cease analog transmissions?
Full-Power DTV Transition Ends Full-Power DTV Transition Ends
Or later when 85% of households in a “market” can “receive” DTV signals
December 2006
FindingsFindings
Class A, LPTV and TV translator stations must Class A, LPTV and TV translator stations must ultimately convert to digital ultimately convert to digital FCC has discretion to set separate analog FCC has discretion to set separate analog transmission end-date for these stationstransmission end-date for these stationsLess disruptive to set date some fixed time after Less disruptive to set date some fixed time after the deadline for full-service stationsthe deadline for full-service stationsWill consider establishing a transition deadline in Will consider establishing a transition deadline in the FCC’s 3the FCC’s 3rdrd DTV periodic review proceeding, DTV periodic review proceeding, unless preempted by Congressional actionunless preempted by Congressional action
AUCTON 81AUCTON 81
Auction of non-daisy chain groups Auction of non-daisy chain groups started September 14started September 14thth and ended and ended September 26September 26thth See DA 05-2543, released September See DA 05-2543, released September 30, 200530, 2005114 Groups, 305 Applications.114 Groups, 305 Applications.90 Winners, 24 Groups did not submit 90 Winners, 24 Groups did not submit a bid.a bid.
Auction 81 ContinuedAuction 81 Continued
Total revenue $997,100 Total revenue $997,100
Maximum bid $253,000 For Laredo, Maximum bid $253,000 For Laredo, Texas, Minimum bid $1000 for Texas, Minimum bid $1000 for different communities.different communities.
Daisy chain MX groups auction , no Daisy chain MX groups auction , no date have been set.date have been set.
Close to 800 applications, 80 groups.Close to 800 applications, 80 groups.
FREEZE ORDERFREEZE ORDER
Public Notice Released August 3, 2004Public Notice Released August 3, 2004
Freeze was imposed in order to develop a Freeze was imposed in order to develop a channel election and repacking process to channel election and repacking process to assign DTV channel in the core TV assign DTV channel in the core TV spectrum for eligible TV stations.spectrum for eligible TV stations.Freeze does not apply to LPTV and TV Freeze does not apply to LPTV and TV translator stations.translator stations.
CONTINUECONTINUE
Modification applications that does not Modification applications that does not change the coverage can be filed.change the coverage can be filed.
Class A displacement applications and Class A displacement applications and applications for coverage changes can not applications for coverage changes can not be filed be filed
STA will be issued if disruption of service STA will be issued if disruption of service is imminent.is imminent.
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Means for LPTV/translator digital conversion
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Option 1: “Flashcut” existing analog channel to digital operation
DIGITAL FLASH- CUT DIGITAL FLASH- CUT APPLICATION PROCESSING APPLICATION PROCESSING
NEW FORMS 346 AND 301-CA, NEW FORMS 346 AND 301-CA, VERSION FEBRUARY 2005 TO BE VERSION FEBRUARY 2005 TO BE USEDUSED
EXISTING LICENSEES OR PERMITTES EXISTING LICENSEES OR PERMITTES WITH A VALID CONSTRUCTION WITH A VALID CONSTRUCTION PERMIT CAN FILE ON-CHANNEL PERMIT CAN FILE ON-CHANNEL DIGITAL CONVERSION AS MINOR DIGITAL CONVERSION AS MINOR CHANGES TO THEIR EXISTING CHANGES TO THEIR EXISTING ANALOG FACILITIES. ANALOG FACILITIES.
FLASH-CUT CONTINUEDFLASH-CUT CONTINUED
A. NO CHANNEL CHANGE.A. NO CHANNEL CHANGE.
B. THE NEW PROTECTED CONTOUR B. THE NEW PROTECTED CONTOUR OF PROPOSED DIGITAL FACILITIES OF PROPOSED DIGITAL FACILITIES SHOULD OVERLAP THE ANALOG SHOULD OVERLAP THE ANALOG FACILITIES OF LPTV AND TV FACILITIES OF LPTV AND TV TRANSLATOR.TRANSLATOR.
Flashcut: File “minor change” applicationFlashcut: File “minor change” application
Digitally converted station protected
contourAnalog station protected
contour
Must be continuity of analog and digital service areas
FLASH CUT CONTINUEDFLASH CUT CONTINUED
C. BECAUSE OF THE FREEZE, THE NEW C. BECAUSE OF THE FREEZE, THE NEW PROTECTED CONTOUR OF A CLASS A PROTECTED CONTOUR OF A CLASS A DIGITAL FLASH CUT PROPOSAL DIGITAL FLASH CUT PROPOSAL SHOULD BE WITHIN THE EXISTING SHOULD BE WITHIN THE EXISTING PROTECTED CONTOUR OF THE PROTECTED CONTOUR OF THE CLASS A STATION.CLASS A STATION.
FLASH CUT (CONTINUED)FLASH CUT (CONTINUED)
D. FIRST COME-FIRST SERVED BASIS.D. FIRST COME-FIRST SERVED BASIS.
THE APPLICATION WILL BE CUT OFFTHE APPLICATION WILL BE CUT OFF
THE DAY IT’S FILED. THE DAY IT’S FILED.
E. THREE-YEAR CONSTRUCTION E. THREE-YEAR CONSTRUCTION PERIOD WILL BE GIVEN TO FLASH-PERIOD WILL BE GIVEN TO FLASH-CUT APPLICATIONS IF THE LICENSED CUT APPLICATIONS IF THE LICENSED FACILITY IS FLASH CUT.FACILITY IS FLASH CUT.
CONTINUEDCONTINUED
F. IF THE CONSTRUCTION PERMIT F. IF THE CONSTRUCTION PERMIT IS FLASH CUT, THEN THE NEW IS FLASH CUT, THEN THE NEW DIGITAL CONSTRUCTION PERMIT DIGITAL CONSTRUCTION PERMIT WILL RECEIVE THE REMAINING WILL RECEIVE THE REMAINING OF THE THREE YEARS PERIOD.OF THE THREE YEARS PERIOD.
FLASH CUTFLASH CUT
G.IF LICENSED FACILITY HAVE A VALID G.IF LICENSED FACILITY HAVE A VALID CONSTRUCTION PERMIT, THE CONSTRUCTION PERMIT, THE CONSTRUCTION PERMIT CAN BE CONSTRUCTION PERMIT CAN BE FLASH CUT, HOWEVER ONLY ONE FLASH CUT, HOWEVER ONLY ONE LICENSED FACILITIES AT ANY TIME. LICENSED FACILITIES AT ANY TIME. CAN NOT USE THE NEW DIGITAL CP CAN NOT USE THE NEW DIGITAL CP AS COMPANION CHANNEL.AS COMPANION CHANNEL.FILING FEES:FILING FEES:– NO FILING FEES IF LPTV OR TV Translator.NO FILING FEES IF LPTV OR TV Translator.
FLASH CUTFLASH CUT
– FOR CLASS A STATIONS THE FEE IS THE FOR CLASS A STATIONS THE FEE IS THE SAME AS MINOR CHANGE IN LICENSED SAME AS MINOR CHANGE IN LICENSED FACILITIES.FACILITIES.
ANY STATION THAT HAS A LICENSE, ANY STATION THAT HAS A LICENSE, CONSTRUCTION PERMIT, OR CONSTRUCTION PERMIT, OR PENDING APPLICATION FOR ON-PENDING APPLICATION FOR ON-CHANNEL CONVERSION WIL NOT BE CHANNEL CONVERSION WIL NOT BE ELIGIBLE TO SUBMIT AN APPLICATION ELIGIBLE TO SUBMIT AN APPLICATION FOR COMPANION DIGITAL CHANNELFOR COMPANION DIGITAL CHANNEL
FLASH CUT CONTINUEDFLASH CUT CONTINUED
NEW SERVICE DESIGNATION:NEW SERVICE DESIGNATION:
– DIGITAL LPTV AND TV TRANSLATORS “LD”DIGITAL LPTV AND TV TRANSLATORS “LD”
– DIGITAL CLASS A STATIONS “DC”DIGITAL CLASS A STATIONS “DC”– RECEIVED 23 APPLICATIONS.RECEIVED 23 APPLICATIONS.– 13 HAVE BEEN GRANTED13 HAVE BEEN GRANTED
FLASH CUT CONTINUEDFLASH CUT CONTINUED
CALL SIGN DESIGNATIONS:CALL SIGN DESIGNATIONS:
– IF THE EXISTING CALL SIGN IS A IF THE EXISTING CALL SIGN IS A COMBINATION OF LETTERS AND COMBINATION OF LETTERS AND NUMBERS, FOR EXAMPLE K34DX THEN NUMBERS, FOR EXAMPLE K34DX THEN THE DIGITAL AUTHORIZATION WILL BE THE DIGITAL AUTHORIZATION WILL BE ASSIGNED K34DX-D.ASSIGNED K34DX-D.
FLASH CUT CONTINUEDFLASH CUT CONTINUED
– IF STATION HAS A FOUR LETTER CALL IF STATION HAS A FOUR LETTER CALL SIGN FOR EXAMPLE: KABC-LP OR KABC-SIGN FOR EXAMPLE: KABC-LP OR KABC-CA. THEN FOR LPTV AND TV CA. THEN FOR LPTV AND TV TRANSLATOR STATIONS THE NEW CALL TRANSLATOR STATIONS THE NEW CALL SIGN OF KABC-LD AND FOR CLASS A SIGN OF KABC-LD AND FOR CLASS A STATIONS THE NEW CALL SIGN OF KABC-STATIONS THE NEW CALL SIGN OF KABC-DC CAN BE REQUESTED VIA THE CALL DC CAN BE REQUESTED VIA THE CALL SIGN DATA BASE.SIGN DATA BASE.
CDBS UPDATECDBS UPDATE
NON FORM FILINGS:NON FORM FILINGS:
CDBS CONTINUEDCDBS CONTINUED
FUTURE FUTURE ENHANCEMENTS;ENHANCEMENTS;
FRN MANAGER,:FRN MANAGER,:https://svartifoss2.fcc.gov/https://svartifoss2.fcc.gov/cdbs/frnmanager/cdbs/frnmanager/
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Option 2: Seek digital “companion channel” for transitional analog & digital station operations
Service of Service of existing analog existing analog stationstation
LPTVLPTV Class AClass A
Regulatory Regulatory status of digital status of digital stationstation
LPTV LPTV SecondarySecondary
Class A PrimaryClass A Primary
Application formApplication form 346346 301-CA301-CA
LPTV and Class A On-channel Digital Conversion Comparison
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Analog
Digital
Pro: Offer digital service without losing audience receiving analog service
Cons: (1) Budget to run both analog and digital station and (2) initial digital audience may be very small
Nationwide Digital Companion Channel Nationwide Digital Companion Channel Filing WindowFiling Window
Digital companion channel to be paired Digital companion channel to be paired with a station’s analog channel in same with a station’s analog channel in same community (but without requirement for community (but without requirement for program simulcast)program simulcast)– Cannot apply for a companion channel Cannot apply for a companion channel
associated with a station that has an associated with a station that has an authorization or pending application to flash authorization or pending application to flash cut to digitalcut to digital
Only for permittees and licensees of Only for permittees and licensees of LPTV, TV translator and Class A stationsLPTV, TV translator and Class A stations
Process for Digital Companion Process for Digital Companion Channel WindowChannel Window
Public Notice will announce dates of the window Public Notice will announce dates of the window and freeze on filing of minor change applications, and freeze on filing of minor change applications, including digital flash cut applicationsincluding digital flash cut applications
Window opens – electronically file Form 175, Window opens – electronically file Form 175, declaring locations and channels of interestdeclaring locations and channels of interest– No filing feeNo filing fee– Anticipate Form 175 will include the application Tech Anticipate Form 175 will include the application Tech
BoxBox
(Continued)(Continued)
Freeze lifted on filing of minor change Freeze lifted on filing of minor change applicationsapplicationsApplication “singletons” identified and call for Application “singletons” identified and call for filing of “long form applications”filing of “long form applications”Period for engineering solutions & settlements to Period for engineering solutions & settlements to resolve mutually exclusive applicationsresolve mutually exclusive applicationsAuction procedures for mutually exclusive Auction procedures for mutually exclusive applicationsapplicationsAt a time to be determined later, must return one At a time to be determined later, must return one of the paired channelsof the paired channels
Subsequent First-Come-First Serve Subsequent First-Come-First Serve Application Filing ProcedureApplication Filing Procedure
Will be announced by public noticeWill be announced by public notice
Not limited to incumbentsNot limited to incumbents
Applications must protect earlier-filed applicationsApplications must protect earlier-filed applications
Conflicting applications filed on the same day Conflicting applications filed on the same day subject to competitive bidding process subject to competitive bidding process
What are the priorities with respect What are the priorities with respect to displacement relief applications?to displacement relief applications?
Analog and digital displacement relief Analog and digital displacement relief applications have priority over applications applications have priority over applications for new or modified digital facilities, for new or modified digital facilities, including digital conversion applicationsincluding digital conversion applications
May file for a replacement channel and on-May file for a replacement channel and on-channel digital conversion in the same channel digital conversion in the same application application
What are the priorities with respect What are the priorities with respect to displacement relief applications?to displacement relief applications?
Digital displacement applications have Digital displacement applications have priority over analog displacement priority over analog displacement applicationsapplications
When mutually exclusive, the lower priority When mutually exclusive, the lower priority application will be dismissedapplication will be dismissed
Service of Service of existing analog existing analog stationstation
LPTVLPTV Class AClass A
Service & Service & regulatory regulatory status of digital status of digital companion companion stationstation
Part 74 Part 74 SecondarySecondary
Part 74 Part 74 Secondary Secondary
Application formApplication form 346346 301-CA301-CA
LPTV and Class A Licensee Digital Channel Comparison
Use of Channels 52-60 by Digital Use of Channels 52-60 by Digital LPTV and Translator StationsLPTV and Translator Stations
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52 …59
60…69
Channels 52-69Channels 52-69
Available for displacement relief and digital Available for displacement relief and digital conversion of existing analog stationsconversion of existing analog stations
Channels 52-59 also available for digital Channels 52-59 also available for digital companion channels if no suitable in-core companion channels if no suitable in-core channel is availablechannel is available
By law, channels 60-69 must be vacated by By law, channels 60-69 must be vacated by end of the full-power DTV transitionend of the full-power DTV transition
Notification Requirements for Applicants for Notification Requirements for Applicants for Digital Operations on Channels 52-69Digital Operations on Channels 52-69
Must notify in writing within 30 days of filing FCC Must notify in writing within 30 days of filing FCC application Form 346 potentially affected co-application Form 346 potentially affected co-channel and adjacent channel commercial wireless channel and adjacent channel commercial wireless licensees and regional and state frequency licensees and regional and state frequency administrators of adjacent channel public safety administrators of adjacent channel public safety spectrumspectrum
Notification/coordination zone about digital station:Notification/coordination zone about digital station:75 miles - co-channel 75 miles - co-channel 50 miles - adjacent channel50 miles - adjacent channel
LOWER 700 MHz Bandplan(Channels 52-(Channels 52-59)59)
Commercial wireless band manager
A AB BC CD E
52 53 54 55 56 57 58 59
TV Channel
60
Denver Channel 54 75 mile radius
MSA/RSA
MSA 19: Denver
MSA 117: Colorado
MSA 210: Ft. Collins
MSA 243: Greeley
RSA 349: Logan
RSA 351: Park
RSA 348: Moffat
RSA 350: Garfield
RSA 352: Elbert
Springs
700 MHz C-Block 700 MHz C-Block Licensee IdentificationLicensee Identification
http://wireless.fcc.gov/http://wireless.fcc.gov/ Click <License Search> (Under Licensing) Click <License Search> (Under Licensing)
Click <Market Based>Click <Market Based>
Enter <Market Code> Enter <Market Code>
e.g., CMA350 (for RSA 350, Garfield, CO)e.g., CMA350 (for RSA 350, Garfield, CO)
Highlight <Radio Service Code>Highlight <Radio Service Code>
WZ, Lower 700 MHz bandWZ, Lower 700 MHz band
Click <Submit>Click <Submit>
We have an answer !We have an answer !
Click on <name> for contact informationClick on <name> for contact informationAddressAddress
Phone, fax & e-mail Phone, fax & e-mail
Contact personContact person
Attorney contact informationAttorney contact information
Union Telephone Company
Qualcomm is the sole licensee Qualcomm is the sole licensee of the 700 MHz spectrum of the 700 MHz spectrum
comprising TV Channel 55 comprising TV Channel 55
UPPER 700 MHz Bandplan(Channels 60-(Channels 60-69)69)
62 63 64 65 66 67 68 69
TV Channel
60 61
Public Safety
Wireless Band Manager
Channels 60-69Channels 60-69
Must secure “coordinated use agreement” Must secure “coordinated use agreement” with public safety frequency administrators with public safety frequency administrators before filing “flash-cut” application on before filing “flash-cut” application on channels 63, 64, 68 or 69channels 63, 64, 68 or 69Regional Planning Committee(s)Regional Planning Committee(s)State Interoperability Executive State Interoperability Executive
Committee(s)Committee(s)
http://wireless.fcc.gov/publicsafety/700MHz/plans.html
Put cursor inside Colorado and click for information on public safety Region 7
Public Safety Channels 63,64, 68 & 69
Denver Channel 64
75 mile radius
Regional Coordinator and State of Colorado contact: Region 7 700 MHz Planning Committee Radio Systems Manager, Arapahoe County Sheriff’s Office
http://wireless.fcc.gov/publicsafety/700MHz/regchair.html http://wireless.fcc.gov/publicsafety/700MHz/interop-contacts.html
Operations on Channels 52-69Operations on Channels 52-69
Secondary to commercial wireless or public safety Secondary to commercial wireless or public safety operationsoperationsMust cease use of channels 60-69 per public safety Must cease use of channels 60-69 per public safety coordinated use agreement or, if later, the end of coordinated use agreement or, if later, the end of the full-service DTV transition the full-service DTV transition
Existing or future wireless licensee may serve Existing or future wireless licensee may serve digital translator or LPTV licensee a notice of digital translator or LPTV licensee a notice of potential conflict within 120 days of commencing potential conflict within 120 days of commencing new or modified operationnew or modified operation
Channels 52-59Channels 52-59
Digital station must cease operating within Digital station must cease operating within 120 days of receiving notice unless 120 days of receiving notice unless – start of wireless service is delayedstart of wireless service is delayed– agreement is reached with wireless licensee or agreement is reached with wireless licensee or – FCC request for stay is grantedFCC request for stay is granted
Station licensee may seek replacement Station licensee may seek replacement channelchannel
Digital Protected Signal Contours Digital Protected Signal Contours and Current ERP Limitsand Current ERP Limits
ChannelsChannels Protected Protected ContourContour
Effective Effective Radiated Radiated PowerPower
2-62-6 43 dBu43 dBu 300 watts300 watts
7-137-13 48 dBu48 dBu 300 watts300 watts
14-6914-69 51 dBu51 dBu 15,000 watts15,000 watts
Signal CoverageSignal Coverage
UHF station: 300 feet above average terrain; 15,000 watts
X26 mi
51 dBuF(50,90) =
Signal CoverageSignal Coverage
UHF digital translator: 2000’ above average terrain
X26 mi
51 dBuF(50,90) =
250 watts
Analog Translator & LPTV Interference Analog Translator & LPTV Interference Methodology: Contour ProtectionMethodology: Contour Protection
U
Proposed Station
10 miles
2 miles
Antenna heights above average terrain (2-10 miles)
D
Protected Station
Protected Contour (D)
10 miles
2 miles
Interference Protection ConsiderationsInterference Protection Considerations
Permit interference avoidance techniques (e.g., co-located operations on adjacent channels)
Ensure adequate protection
Account for terrain, interference masking and receiving antenna characteristics
Permit interference acceptance agreements among stations in the LPTV and Class A services
Adopted D/U Interference Adopted D/U Interference ThresholdsThresholds
Except for adjacent channel interference from Except for adjacent channel interference from digital stations, apply § 73.623(c) of DTV rulesdigital stations, apply § 73.623(c) of DTV rules
Examples for co-channel protectionExamples for co-channel protection– Digital protecting digital: + 15 dBDigital protecting digital: + 15 dB– Digital protecting analog: + 34 dBDigital protecting analog: + 34 dB
D/U Ratios for Interference From D/U Ratios for Interference From First Adjacent Channel StationsFirst Adjacent Channel Stations
Emission MaskEmission Mask DTV-into-AnalogDTV-into-Analog DTV-into-DTVDTV-into-DTV
SimpleSimple 10 dB10 dB - 7 dB- 7 dB
StringentStringent 0 dB0 dB -12 dB-12 dB
Adopted DTV Prediction Adopted DTV Prediction Methodology Tailored for LPTVMethodology Tailored for LPTV
OET Bulletin 69 Longely Rice PropagationOET Bulletin 69 Longely Rice Propagation
D/U Signal Strength RatiosD/U Signal Strength Ratios
*
+
+Protected Signal Strength: D (dBu)
Potentially Interfering Signal Strength: U (dBu)
D – U > Interference Threshold (dB) ?
Service population area
Protected Service Contour
Adopted DTV Approach for Interference Analysis of Digital Translator/LPTV/Class A Stations
(OET Bulletin 69 Methods & Longley-Rice Propagation Model)
Permitted Service Population Reductions Permitted Service Population Reductions Due to Digital Translator & LPTV StationsDue to Digital Translator & LPTV Stations
Protected StationProtected Station Population Reduction Population Reduction AllowanceAllowance
Full-service DTVFull-service DTV 0.5 %0.5 %
Full-service TVFull-service TV 0.5 %0.5 %
Analog or digital Class AAnalog or digital Class A 0.5 %0.5 %
Analog or digital TV Analog or digital TV translator or LPTVtranslator or LPTV
2.0 %2.0 %
Need to Tailor Assumed Vertical Antenna Pattern in Need to Tailor Assumed Vertical Antenna Pattern in Table 8. of OET 69 Model for Typical Antennas Used by Table 8. of OET 69 Model for Typical Antennas Used by
LPTV StationsLPTV Stations
Assumed vertical relative field = 0.110 for Φ >= 6 degrees
ERPMAX = 10 kW
ERP (6º = 121 watts)6 º
1000 feet
10 miles
5 miles74 dBu contour
Φ=
10 kW directed down at 6º puts 74 dBu at 16 miles
Assumed Vertical Antenna PatternAssumed Vertical Antenna Pattern
As temporary measure, will double values As temporary measure, will double values in Table 8 of OET Bulletin 69 up to a value in Table 8 of OET Bulletin 69 up to a value of 1.00of 1.00
FCC open to a revised procedure if more FCC open to a revised procedure if more realistic assumed vertical field strength realistic assumed vertical field strength values are proposedvalues are proposed
Transmission IssuesTransmission Issues
Require FCC Certification of New Digital Translator and LPTV Transmitters
Key Transmitter Performance Key Transmitter Performance Criteria for CertificationCriteria for Certification
Produces output signal that can be satisfactorily Produces output signal that can be satisfactorily viewed on receivers designed for FCC DTV viewed on receivers designed for FCC DTV transmission standardtransmission standard
Does not exceed the maximum rated “digital Does not exceed the maximum rated “digital average” power output under any conditionaverage” power output under any condition
Out-of-channel emissions at output terminals Out-of-channel emissions at output terminals (including all output filtering) meet the (including all output filtering) meet the attenuation requirements of the “simple” maskattenuation requirements of the “simple” mask
Local oscillator frequency of RF upconverter Local oscillator frequency of RF upconverter must be maintained within 10 kHzmust be maintained within 10 kHz
Emission MasksEmission Masks
Total Average Channel Power
0.5 MHz-0.5 MHz 6 MHz- 6 MHz
6 MHz Channel
3 3
47 dB down
76 dB 76 dB
“Stringent”
“Simple”
71 dB 71 dB
Emission Resolution BandwidthEmission Resolution Bandwidth
Standard bandwidth of 500 kHzStandard bandwidth of 500 kHz
Results from any alternate bandwidth should Results from any alternate bandwidth should be converted to equivalent results from 500 be converted to equivalent results from 500 kHz bandwidth:kHz bandwidth:
A (dB) = AA (dB) = Aalternative alternative + 10 log (BW+ 10 log (BWalternative alternative /500) /500)
GPS Protection From 2GPS Protection From 2ndnd and 3 and 3rdrd Harmonic EmissionsHarmonic Emissions
GPS frequency bands: 1164-1215 MHz, 1215-GPS frequency bands: 1164-1215 MHz, 1215-1240 MHz and 1559-1610 MHz1240 MHz and 1559-1610 MHzAffects only TV channels 22-24, 32-36, 38 and Affects only TV channels 22-24, 32-36, 38 and 65-6965-69For FCC certification, transmitter must employ For FCC certification, transmitter must employ filtering that attenuates harmonic emissions in filtering that attenuates harmonic emissions in the GPS bands by at least 85 dBthe GPS bands by at least 85 dBField measurements of the second or third Field measurements of the second or third harmonic output of transmitters so equipped are harmonic output of transmitters so equipped are not requirednot required
Modification of Transmission SystemsModification of Transmission Systems
Permit modification of existing analog Permit modification of existing analog equipment for digital transmissions (equipment for digital transmissions (e.g.e.g., use , use analog final RF amplifiers)analog final RF amplifiers)Station licensee must notify FCC upon Station licensee must notify FCC upon completion of modifications (and certify that any completion of modifications (and certify that any custom modifications comply with technical custom modifications comply with technical requirements)requirements)Licensee must maintain records of the nature of Licensee must maintain records of the nature of the modifications, test procedures and results the modifications, test procedures and results for period of two yearsfor period of two years
Program System & Information Protocol (PSIP)Program System & Information Protocol (PSIP)
Data in the DTV bit stream for channel Data in the DTV bit stream for channel navigation, closed captioning, electronic navigation, closed captioning, electronic program guide and other functionsprogram guide and other functionsVirtual Channel Table facilitates electronic Virtual Channel Table facilitates electronic tuningtuning– Viewers tune to DTV station’s “Major Channel” – Viewers tune to DTV station’s “Major Channel” –
the station’s corresponding NTSC channel the station’s corresponding NTSC channel number (e.g., channel 7.0)number (e.g., channel 7.0)
– ““Minor Channel” numbers identify specific DTV Minor Channel” numbers identify specific DTV services or program channels (e.g., 7.1, 7.2, …) services or program channels (e.g., 7.1, 7.2, …)
PSIP is voluntary for LPTV, required for PSIP is voluntary for LPTV, required for Class AClass A
On-channel Digital TV TranslatorsOn-channel Digital TV Translators
Same transmission and interference standards and application filing procedures as digital translator & LPTV stations
What digital service is What digital service is required and permitted?required and permitted?
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Whenever operating, Whenever operating, must transmit a must transmit a freefree off- off-air video programming air video programming service of at least analog service of at least analog TV technical qualityTV technical quality
Intended for reception by Intended for reception by the general public using the general public using receivers based on the receivers based on the FCC transmission FCC transmission standard (standard (i.e.i.e., , 8-VSB 8-VSB modulationmodulation) )
I want that free video programming service on my new DTV set.
DynamicDynamic Bit Allocation Options Bit Allocation Options (19.38 megabits/sec)(19.38 megabits/sec)
HDTV SDTV DATA
SDTV Ancillary & Supplementary
SDTV 1 SDTV 2 SDTV 3 SDTV 4 SDTV5
SDTV Empty Bit Space
Ancillary and Supplementary ServicesAncillary and Supplementary Services
Pay TV
Can partner with outside service providers
Annual fee of 5% of gross revenues from feeable services
Examples: Data sent to TV or computer, subscription video, downstream internet, paging
THANK YOU THANK YOU FRIENDSFRIENDS
BEST WISHESBEST WISHES
