![]() ![]() Show this book's table of contents, where you can jump to any chapter by name. Based on feedback from you, our users, we've made some improvements that make it easier than ever to read thousands of publications on our website.ĭo you want to take a quick tour of the OpenBook's features? No Thanks Take a Tour » You're looking at OpenBook, NAP.edu's online reading room since 1999. Appendix H: Selected Acronyms and Abbreviations 260–264.Appendix G: Selected Rules and Regulations of the Federal Communications Commission 259.Appendix F: Use of 0 dBi for Sidelobe Gain in Calculations of Interference in Radio Astronomy Bands 257–258.Appendix E: International Astronomical Union Spectral Lines of Most Importance Above 1 THz 244–256.Appendix D: International Astronomical Union Spectral Lines of Most Importance Between 3 GHz 241–243.Appendix C: International Astronomical Union Spectral Lines of Most Importance Below 300 GHz 237–240.Appendix B: IEEE Standard Letter Designations for Radar Bands 234–236.Appendix A: Definitions of Terms 231–233.4 Technical Aspects of Protection for the Scientific Use of the Radio Spectrum 86–102.3 Scientific Background: Earth Exploration Satellite Service 52–85.2 Scientific Background: Radio Astronomy Service 16–51.1 Radio Frequency Regulation for the Scientific Services 3–15.In radar practice, however, the upper limit is usually taken as 1000 MHz, L- and S-bands being used to describe the higher UHF region. The official ITU designation for the ultra high frequency band extends to 3000 MHz. Frequencies from 216-450 MHz were sometimes called P-band.ĥ. So-called HF radars might operate anywhere from just above the broadcast band (1.605 MHz) to 40 MHz or higher.Ĥ. There are no official ITU radiolocation bands at HF. The NTIA manual (known as the Redbook) can be downloaded from. The specific frequency ranges for radiolocation are listed in the National Telecommunications and Information Administration (NTIA) Manual of Regulations & Procedures for Federal Radio Frequency Management, Chapter 4. The listings of frequency assignments are included for reference only and are subject to change.Ģ. The frequency allocations listed include those for both primary and secondary service. The ITU defines no specific service for radar, and the frequency assignments listed are derived from those radio services that use radiolocation. These International Telecommunication Union (ITU) frequency allocations are from the table contained in Article S5 of the ITU Radio Regulations, 2002 edition, reaffirmed in 2009 (see ). Specific Frequency Ranges for Radar Based on ITU Assignments (see Notes 1, 2)ġ. TABLE B.1 IEEE Standard Letter Designations for Radar Bands Used by the EESS Community and Their Comparison to the ITU Allocations International Table ![]()
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