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Edit Comment Close Premium member Presentation Transcript Understanding our Wireless World: Understanding our Wireless World Your guide to a successful sports broadcast season by Ralph Beaver SBE frequency coordination chairSlide2: An RF “channel” is like a blank sheet of paper. The channel itself is not that special… depends on what you do with it. If you gave me a blank sheet of paper and said “draw something”, you may get something…Slide3: …like this! I cannot draw. This is what you may get. But if you give this same sheet of paper to a friend of mine, you may get…Slide4: …this! It’s the same sheet of paper. It’s the same pencil. It just depends on how you use it.Channel uses: Channel uses IFB Camera Data Broadcast Audio Operational Communications Where Do We Get Wireless Mic Channels?: Where Do We Get Wireless Mic Channels? Reuse existing TV channels - - - Currently available wireless microphone equipment reuses TV channels not currently in use in your area.Slide7: 1 Television Channel Or 10 wireless microphones Slide8: Over-the-air broadcast channels 2 83 13 14 You may remember the typical line of TV channels. Channel 2 through 13 represent the VHF band and 14 thru 83 represent the UHF band.Slide9: A map such as this one by Shure helps you choose available channels in your area to avoid conflict with broadcast TV stations on the air.Slide10: Over-the-air broadcast channels This is a sample of the Tampa, Florida TV usage. Each full power TV station is represented by a green box. We have stations on channels 3, 8, 10, 13, 16 and so on.Slide11: Government re-farming of TV channels Then we consider the TV channels the FCC has re-assigned for “non-TV” use. Your cell phone may be operating in one of these gray boxes!Slide12: Add low power TV channels We will add blue boxes to represent Tampa Bay Area low power TV stations. As you can see, the available wireless mic channels are less and less. BUT WAIT!Slide13: Add digital television channels Everyone with a green box (analog TV) gets a red box (digital TV). Not many white boxes left for wireless mic use.Slide14: What is left for wireless use Removing all the occupied boxes, here are the available channels for wireless. Since most currently available equipment operates on UHF, we will remove the VHF boxes.Slide15: What is left for wireless use Still looks like a lot of room! Right? Nope. Let’s look at a chart published by Lectrosonics to tune their wireless devices.Slide16: Notice that a single wireless mic can only tune about 5 TV channels. . .not the entire TV band. Let’s enlarge the bottom chart.Slide17: As you can see by the shading, 5 TV channels are in this chart. Let’s pick a channel.Slide18: There! The green box is your channel. The “other people” can use the remaining 255 channels. WRONG! Your “center frequency” may be the green box, but your “bandwidth” is wider.Slide19: Your bandwidth (in yellow) now takes up far more than one box. Let’s compare this chart to our first charts of TV usage. The red box here---Slide20: Block 21 Wireless Microphone ---is the same as the red box here. Oops. Looks like we can only operate in a single TV channel in this market. This reduces your choices to 10 or less.Who do I contact?: Who do I contact? Manufacturer? Stadium/arena? Local TV Stations? Local radio stations? Local cable systems? How do you find out who to contact to see which channels are available in any US market?Society of Broadcast Engineers: Society of Broadcast Engineers www.sbe.orgSlide23: CLICK HERESlide25: This is the coordinator list for the entire USA divided by state then city. It will give you names and contact numbers for each TV market.SBE Coordination Program: SBE Coordination Program Started in 1982 Over 200 coordinators Over 18,000 users! Volunteer programSBE coordinators are NOT the Police!: SBE coordinators are NOT the Police!NFL users of wireless: NFL users of wireless NFL Coach-to-Coach NFL Coach-to-Quarterback NFL Coach-to-Referee NFL Replay Booth-to-Referee NFL Green Hat NFL Team operations Food, Traffic, Security, Tickets, Cheerleaders, Stadium AV…Typical NFL Gameday: Typical NFL Gameday 142 Local B’cst 64 Coach's 33 Network TV 33 Network Radio 27 NFL 17 Local Team 14 Stadium Operations 12 Visiting Radio 10 Visiting TV 10 Stadium AV 10 Food Service 9 Security 8 Film Crews 4 CQB 3 CleanupHow the NFL cured the problem: How the NFL cured the problem Synergistic Success!: Synergistic Success!Slide32: These signs are posted in each NFL stadium in areas the media occupies.Exempt from Coordination: Exempt from Coordination Cellular Telephones & PCS Family Radio Service Amateur Radio Trunking Systems These items are “pre-coordinated” by their nature or (in the case of Family Radio Service) cannot be coordinated.Slide34: Double check of assigned frequency to be sure!Slide35: Brightly colored tags marked “cleared” unitsCONGRATULATIONS! Now you understand our Wireless World: CONGRATULATIONS! Now you understand our Wireless World Have a successful sports broadcast season! You do not have the permission to view this presentation. In order to view it, please contact the author of the presentation.
web understanding our wireless world Michelino Download Post to : URL : Related Presentations : Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Uploaded from authorPOINTLite Insert YouTube videos in PowerPont slides with aS Desktop Copy embed code: (To copy code, click on the text box) Embed: URL: Thumbnail: WordPress Embed Customize Embed The presentation is successfully added In Your Favorites. Views: 254 Category: Education License: All Rights Reserved Like it (0) Dislike it (0) Added: February 04, 2008 This Presentation is Public Favorites: 0 Presentation Description No description available. Comments Posting comment... By: hmpatel007 (39 month(s) ago) plz let me allow to download this ppt for my personal collection....i'll be very greatful if u allow me to do so...i am a b.e student and want to learn from this presentation Saving..... Post Reply Close Saving..... Edit Comment Close Premium member Presentation Transcript Understanding our Wireless World: Understanding our Wireless World Your guide to a successful sports broadcast season by Ralph Beaver SBE frequency coordination chairSlide2: An RF “channel” is like a blank sheet of paper. The channel itself is not that special… depends on what you do with it. If you gave me a blank sheet of paper and said “draw something”, you may get something…Slide3: …like this! I cannot draw. This is what you may get. But if you give this same sheet of paper to a friend of mine, you may get…Slide4: …this! It’s the same sheet of paper. It’s the same pencil. It just depends on how you use it.Channel uses: Channel uses IFB Camera Data Broadcast Audio Operational Communications Where Do We Get Wireless Mic Channels?: Where Do We Get Wireless Mic Channels? Reuse existing TV channels - - - Currently available wireless microphone equipment reuses TV channels not currently in use in your area.Slide7: 1 Television Channel Or 10 wireless microphones Slide8: Over-the-air broadcast channels 2 83 13 14 You may remember the typical line of TV channels. Channel 2 through 13 represent the VHF band and 14 thru 83 represent the UHF band.Slide9: A map such as this one by Shure helps you choose available channels in your area to avoid conflict with broadcast TV stations on the air.Slide10: Over-the-air broadcast channels This is a sample of the Tampa, Florida TV usage. Each full power TV station is represented by a green box. We have stations on channels 3, 8, 10, 13, 16 and so on.Slide11: Government re-farming of TV channels Then we consider the TV channels the FCC has re-assigned for “non-TV” use. Your cell phone may be operating in one of these gray boxes!Slide12: Add low power TV channels We will add blue boxes to represent Tampa Bay Area low power TV stations. As you can see, the available wireless mic channels are less and less. BUT WAIT!Slide13: Add digital television channels Everyone with a green box (analog TV) gets a red box (digital TV). Not many white boxes left for wireless mic use.Slide14: What is left for wireless use Removing all the occupied boxes, here are the available channels for wireless. Since most currently available equipment operates on UHF, we will remove the VHF boxes.Slide15: What is left for wireless use Still looks like a lot of room! Right? Nope. Let’s look at a chart published by Lectrosonics to tune their wireless devices.Slide16: Notice that a single wireless mic can only tune about 5 TV channels. . .not the entire TV band. Let’s enlarge the bottom chart.Slide17: As you can see by the shading, 5 TV channels are in this chart. Let’s pick a channel.Slide18: There! The green box is your channel. The “other people” can use the remaining 255 channels. WRONG! Your “center frequency” may be the green box, but your “bandwidth” is wider.Slide19: Your bandwidth (in yellow) now takes up far more than one box. Let’s compare this chart to our first charts of TV usage. The red box here---Slide20: Block 21 Wireless Microphone ---is the same as the red box here. Oops. Looks like we can only operate in a single TV channel in this market. This reduces your choices to 10 or less.Who do I contact?: Who do I contact? Manufacturer? Stadium/arena? Local TV Stations? Local radio stations? Local cable systems? How do you find out who to contact to see which channels are available in any US market?Society of Broadcast Engineers: Society of Broadcast Engineers www.sbe.orgSlide23: CLICK HERESlide25: This is the coordinator list for the entire USA divided by state then city. It will give you names and contact numbers for each TV market.SBE Coordination Program: SBE Coordination Program Started in 1982 Over 200 coordinators Over 18,000 users! Volunteer programSBE coordinators are NOT the Police!: SBE coordinators are NOT the Police!NFL users of wireless: NFL users of wireless NFL Coach-to-Coach NFL Coach-to-Quarterback NFL Coach-to-Referee NFL Replay Booth-to-Referee NFL Green Hat NFL Team operations Food, Traffic, Security, Tickets, Cheerleaders, Stadium AV…Typical NFL Gameday: Typical NFL Gameday 142 Local B’cst 64 Coach's 33 Network TV 33 Network Radio 27 NFL 17 Local Team 14 Stadium Operations 12 Visiting Radio 10 Visiting TV 10 Stadium AV 10 Food Service 9 Security 8 Film Crews 4 CQB 3 CleanupHow the NFL cured the problem: How the NFL cured the problem Synergistic Success!: Synergistic Success!Slide32: These signs are posted in each NFL stadium in areas the media occupies.Exempt from Coordination: Exempt from Coordination Cellular Telephones & PCS Family Radio Service Amateur Radio Trunking Systems These items are “pre-coordinated” by their nature or (in the case of Family Radio Service) cannot be coordinated.Slide34: Double check of assigned frequency to be sure!Slide35: Brightly colored tags marked “cleared” unitsCONGRATULATIONS! Now you understand our Wireless World: CONGRATULATIONS! Now you understand our Wireless World Have a successful sports broadcast season!