wireless microphones and white spaces€¦ · when do wireless mics need to stop oppgerating in 700...

Wireless Microphones and White Spacesand White Spaces

Who What When Why How?Who, What, When, Why, How?

Chris LyonsShure Incorporated

Spectrum Map03 MHz

3 MHz

.03 MHz

AM RADIO

3 MHz

.3 MHz

3 MHz

30 MHz

TV2 - 4

TV 5-6

TV7 - 13

FMRADIO

30 MHz

300 MHz

Cel

lPhn

CellPhn

TV 14 - 69

3 GHz

Copyright 2008 Shure Inc.This material may not be published or duplicated without permission.30 GHz

UHF TV Band

“Core TV Band” “700 MHz Band”

PublicSafety

698 MHz

adio

Ast

rono

my

Analog TV Analog TVAuctionDTV DTVR

a

14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69

70-4

7676

-482

82-4

8888

-494

94-5

0000

-506

06-5

1212

-518

18-5

2424

-530

30-5

3636

-542

42-5

4848

-554

54-5

6060

-566

66-5

7272

-578

78-5

8484

-590

90-5

9696

-602

02-6

0808

-614

14-6

2020

-626

26-6

3232

-638

38-6

4444

-650

50-6

5656

-662

62-6

6868

-674

74-6

8080

-686

86-6

9292

-698

98-7

0404

-710

10-7

1616

-722

22-7

2828

-734

34-7

4040

-746

46-7

5252

-758

58-7

6464

-770

70-7

7676

-782

82-7

8888

-794

94-8

0000

-806

47 47 48 48 49 50 50 5 5 52 53 53 54 54 55 56 56 57 57 58 59 59 60 60 6 62 62 63 63 64 65 65 66 66 67 68 68 69 69 70 7 7 72 72 73 74 74 75 75 76 77 77 78 78 79 80

Copyright 2008 Shure Inc.This material may not be published or duplicated without permission.

The 700 MHz Band

Va AT

Qua Va AT

D

Public D

Public

Ver

Verio

us

AT&

T

lcom

m

rious

AT&

T

Blo

ck

c Safet

Blo

ck

c Safet

rizon

erizonm ty ty

52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69

698 MHz 806 MHz


When Do Wireless Mics Need to Stop Operating in 700 MHz Band?p g

• FCC NPRM • Shure– Feb 18, 2009 – Feb 2009 (Public

Safety bands)24 th – 24 months (Commercial bands)

FUN FACT:Since 2006, the FCC has approved 146 new 700 MHz wireless products. The most recent was in August 2008 – the same month that theyThe most recent was in August 2008 the same month that they proposed that users should exit by February 2009.


USA Falling Behind inBroadband AccessBroadband Access

25

30

35

40Other

Fibre/LAN

Cable

DSL

OECD Broadband subscribers per 100 inhabitants, by technology, December 2007

#4 in 2001#15 in 2007

10

15

20

25

OECD average

0

5

S OECD

Number of subscribers per 100 inhabitantsSource: Organisation for Economic Cooperation and Development

Source: OECD


Source: Organisation for Economic Cooperation and Development

The UHF TV Spectrum (Houston, TX)

WhiteS

Ast

rono

my

Auctionedfor new commercial c

Safe

ty

TV c Sa

fety

cSa

fety

TV TV TV TV TV TV TV TV TV TV TV TV TV TV

Spaces

Rad

io A

14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69

76 82 88 94 00 06 12 18 24 30 36 42 48 54 60 66 72 78 84 90 96 02 08 14 20 26 32 38 44 50 56 62 68 74 80 86 92 98 04 10 16 22 28 34 40 46 52 58 64 70 76 82 88 94 00 06

for new commercial wireless services

Publ

ic

Publ

ic

TVChan

Freq

Publ

i

470-

4747

6-48

482-

4848

8-49

494-

5050

0-50

506-

5151

2-51

518-

5252

4-53

530-

5353

6-54

542-

5454

8-55

554-

5656

0-56

566-

5757

2-57

578-

5858

4-59

590-

5959

6-60

602-

6060

8-61

614-

6262

0-62

626-

6363

2-63

638-

6464

4-65

650-

6565

6-66

662-

6666

8-67

674-

6868

0-68

686-

6969

2-69

698-

7070

4-71

710-

7171

6-72

722-

7272

8-73

734-

7474

0-74

746-

7575

2-75

758-

7676

4-77

770-

7777

6-78

782-

7878

8-79

794-

8080

0-80Freq

Range(MHz)

512 MHz 698 MHz


White Space Devices

“Personal/Portable”“Fixed/Access”


Spectrum Sensing“Listen Before Talk”ste e o e a

> 100,000 W

.01 - .1 W

TV44 TV45 TV46


TV44 TV45 TV46

Results of Field Testing

• Baltimore Ravens game at Fedex Field

• Spamalot on Broadway


Disabling Beacon“Stay out of

• Tells WS devices which

Stay out of

channel 26”

channels to avoid

• One beacon per TV • One beacon per TV channel?

• Available to licensed mic users only?


Part 74 LicensingPart 74 Licensing

GOAL: Prevent wireless mics from interfering with TV broadcasts

FCC limits license However, FCC has granted

GOAL: Prevent wireless mics from interfering with TV broadcasts• No record of such interference since 1977

FCC limits license eligibility to:

• BroadcastersCable TV operators

However, FCC has granted licenses to:

• UniversitiesPrivate companies• Cable TV operators

• TV/Film production co’s• Private companies• Churches

License eligibility determined by type of use, not type of user


What About Other Bands?944-952 MHz

STL’s

902-928 MHzConsumer

2.4 GHzWi-Fi,

Bl t thproducts, DMX,

industrial controls ham

Bluetooth, DMX


controls, ham radio

Where Things Stand Now

• FCC looking for a solution that

– allows new use of TV spectrumallows new use of TV spectrum

– protects broadcasters & mic users in White Spaces

– expands licensing to ‘culturally important’ usersp g y p

– Provides a clear transition path for installed base of 700 MHz wireless mic users

??Copyright 2008 Shure Inc.This material may not be published or duplicated without permission.

To-Do List

• Identify local active TV channels– www.shure.com/frequency

• Take inventory of your gearTake inventory of your gear– Manufacturer, model, MHz

• Replace systems in 700 MHz spectrum • Replace systems in 700 MHz spectrum by . . . ???


For More Information

• www.shure.com/whitespaces

• [email protected]

• To monitor FCC proceedings:p g– www.fcc.gov/oet/projects/tvbanddevice/


wireless microphones and white spaces€¦ · when do wireless mics need to stop oppgerating in 700...

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