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

3. James Stoffo

5. UHF Spectrum 2000-2020

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

7. 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.

8. 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. Frequenices Transmission Power 54MHz - 72MHz50 mW 76MHz - 88MHz50 mW 174MHz - 216MHz50 mW 470MHZ - 698MHz250mW 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.

9. 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

10. 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

11. Spectrumbridge results for reserved mic channels in 98109

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

15. Intermodulation Analysis System

18. RF Explorer http://rfexplorer.com

19. Clear Waves Software http://rfexplorer.com/white-space-finder/ http://rfexplorer.com/white-space-finder/

20. Frequency Coordination

21. Intermodulation Distortion (IMD)

22. Metal Trays Reduce IMD

23. RF Level Comparison, InTrays and Out

25. IAS Demo

26. IAS Frequency Coordination Report

28. Get Creative Test Your Assumptions Keep Records, Track Changes Watch This Space