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Radio Frequency Coordination For Events AES PNW Section, Seattle WA April 2016

Radio Frequency Coordination For Events AES PNW Section, Seattle WA April 2016. James Stoffo. UHF Spectrum 2000-2020. Full power TV. Shared white space channel. Distant / low field strength TV signal: co-channel operation possible. Exclusive mic channels. Ch 14. Ch 37. Ch 51. Uplink.

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Radio Frequency Coordination For Events AES PNW Section, Seattle WA April 2016

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  1. Radio Frequency Coordination For Events AES PNW Section, Seattle WA April 2016

  2. James Stoffo

  3. UHF Spectrum 2000-2020

  4. Full power TV Shared white space channel Distant / low field strength TV signal: co-channel operation possible Exclusive mic channels Ch 14 Ch 37 Ch 51 Uplink Downlink Duplex Gap for licensed mic use. High noise floor possible Guard band: unlicensed operation of unlicensed TVWS & mics Duplex Gap for unlicensed TVWS Naturally occurring White Space channel. Higher activity as more TVWS devices enter the market Now UHF TV band 470-698 MHz Future? Possible strategies in the UHF band as we know it… 6 |

  5. We won’t know until the auction is over and FCC issues complete results. ► ■3 year transition period.Keep searching for news stories: “FCC auction wireless microphones white space” etc.

  6. Part 74 Licensing • The Part 74 License will allow Licensed operation of wireless mics, wireless in ear monitors, and wireless communications in the following bands. Users who routinely work with 50 or more frequencies are eligible to apply for and be protected under the FCC’s Low Power Broadcast Auxiliary (LPBA) Part 74 License providing immediate access to the white space database and offering the right to reserve necessary frequencies for a production or event.

  7. Geo-location Database • Database shows which TV channels are reserved for wireless mics and comms • Registering event protects you from interference on non-reserved channels • Licensed users get immediate access • Unlicensed users need FCC approval first • 30-day advance notice required • Expect them to be very selective

  8. Geo-location Databases • Currently active databases: • http://keybridgeglobal.com • http://whitespaces.spectrumbridge.com/whitespaces/home.aspx • https://prism.telcordia.com/tvws/home/contour_vis.shtml • https://www.google.com/get/spectrumdatabase/ • Professional Wireless Systems License Assistance • www.part74.com

  9. Spectrumbridge results for reserved mic channels in 98109

  10. http://www.winradio.com/home/g33wsm.htm

  11. Intermodulation Analysis System

  12. RF Explorerhttp://rfexplorer.com

  13. Clear Waves Softwarehttp://rfexplorer.com/white-space-finder/

  14. Frequency Coordination

  15. Intermodulation Distortion (IMD)

  16. Metal Trays Reduce IMD

  17. RF Level Comparison, InTrays and Out

  18. IAS Demo

  19. IAS Frequency Coordination Report

  20. Get CreativeTest Your AssumptionsKeep Records, Track ChangesWatch This Space

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