[{"n": "800 MHz frequency band", "u": "/e/radio-spectrum/800-mhz-frequency-band/", "s": "Former TV band reallocated for mobile broadband in Europe."}, {"n": "Band I", "u": "/e/radio-spectrum/band-i/", "s": "VHF band originally used for analog television broadcasting worldwide."}, {"n": "Band III", "u": "/e/radio-spectrum/band-iii/", "s": "VHF band from 174 to 240 MHz for TV and radio."}, {"n": "Band IV", "u": "/e/radio-spectrum/band-iv/", "s": "A UHF band used for television and mobile broadcast services."}, {"n": "Band V", "u": "/e/radio-spectrum/band-v/", "s": "A disputed UHF band used for TV and mobile services."}, {"n": "Bandwidth allocation", "u": "/e/radio-spectrum/bandwidth-allocation/", "s": "Assigning radio frequencies to applications using auctions, lotteries, or hearings."}, {"n": "Digital dividend after digital television transition", "u": "/e/radio-spectrum/digital-dividend-after-digital-television-transition/", "s": "Spectrum freed by the analog-to-digital television transition."}, {"n": "E band (waveguide)", "u": "/e/radio-spectrum/e-band-waveguide/", "s": "Waveguide E band spans 60–90 GHz for high-density fixed wireless."}, {"n": "Equivalent power flux density", "u": "/e/radio-spectrum/equivalent-power-flux-density/", "s": "A regulatory metric for NGSO-to-GSO interference in shared satellite spectrum."}, {"n": "Extremely high frequency", "u": "/e/radio-spectrum/extremely-high-frequency/", "s": "Millimeter waves enable dense frequency reuse and 5G networks."}, {"n": "Extremely low frequency", "u": "/e/radio-spectrum/extremely-low-frequency/", "s": "ELF waves penetrate seawater and travel worldwide for submarine communication."}, {"n": "Frequency allocation", "u": "/e/radio-spectrum/frequency-allocation/", "s": "Government designation of electromagnetic spectrum into regulated frequency bands."}, {"n": "High frequency", "u": "/e/radio-spectrum/high-frequency/", "s": "HF enables long-distance radio communication via ionospheric skywave propagation."}, {"n": "Low frequency", "u": "/e/radio-spectrum/low-frequency/", "s": "Low frequency waves enable long-distance ground wave communication."}, {"n": "Luxemburg–Gorky effect", "u": "/e/radio-spectrum/luxemburg-gorky-effect/", "s": "Cross modulation of radio waves via ionospheric conductivity changes."}, {"n": "Medium frequency", "u": "/e/radio-spectrum/medium-frequency/", "s": "Medium frequency spans 300 kHz to 3 MHz, key for AM broadcasting."}, {"n": "Military spectrum management", "u": "/e/radio-spectrum/military-spectrum-management/", "s": "Essential for command, control, and interoperability in military operations."}, {"n": "NATO Joint Civil/Military Frequency Agreement", "u": "/e/radio-spectrum/nato-joint-civil-military-frequency-agreement/", "s": "Universal NATO treaty regulating military spectrum access from 14 kHz to 100 GHz."}, {"n": "Open spectrum", "u": "/e/radio-spectrum/open-spectrum/", "s": "Movement for shared, unlicensed radio-frequency spectrum for all."}, {"n": "Orbit spectrum", "u": "/e/radio-spectrum/orbit-spectrum/", "s": "A limited radio spectrum segment enabled by satellites in orbit."}, {"n": "Personal RF safety monitor", "u": "/e/radio-spectrum/personal-rf-safety-monitor/", "s": "Worn device measuring RF exposure against safety guidelines."}, {"n": "Radio frequency", "u": "/e/radio-spectrum/radio-frequency/", "s": "Oscillation rate enabling radio wave radiation from conductors."}, {"n": "Radio Spectrum Policy Programme", "u": "/e/radio-spectrum/radio-spectrum-policy-programme/", "s": "EU programme to standardise radio spectrum allocation across member states."}, {"n": "Radio spectrum pollution", "u": "/e/radio-spectrum/radio-spectrum-pollution/", "s": "Stray radio waves causing unintended effects on communication and health."}, {"n": "Shortwave radio", "u": "/e/radio-spectrum/shortwave-radio/", "s": "Shortwave radio enables long-distance communication via ionospheric reflection."}, {"n": "Spectral density", "u": "/e/radio-spectrum/spectral-density/", "s": "Distribution of signal power over frequency components."}, {"n": "Spectrum auction", "u": "/e/radio-spectrum/spectrum-auction/", "s": "Government auction of rights to transmit over specific radio spectrum bands."}, {"n": "Spectrum commons theory", "u": "/e/radio-spectrum/spectrum-commons-theory/", "s": "Theory advocating user-managed, open-access radio spectrum without centralized regulation."}, {"n": "Spectrum management", "u": "/e/radio-spectrum/spectrum-management/", "s": "Regulating radio frequencies for efficient use and social benefit."}, {"n": "Super high frequency", "u": "/e/radio-spectrum/super-high-frequency/", "s": "SHF enables narrow-beam microwave communication and radar from 3 to 30 GHz."}, {"n": "Super low frequency", "u": "/e/radio-spectrum/super-low-frequency/", "s": "SLF waves penetrate seawater for submarine communication."}, {"n": "Ultra high frequency", "u": "/e/radio-spectrum/ultra-high-frequency/", "s": "UHF band spans 300 MHz to 3 GHz, enabling line-of-sight communications."}, {"n": "Very high frequency", "u": "/e/radio-spectrum/very-high-frequency/", "s": "VHF spans 30–300 MHz, enabling line-of-sight radio for broadcasting, aviation, and marine use."}, {"n": "Very low frequency", "u": "/e/radio-spectrum/very-low-frequency/", "s": "VLF waves penetrate seawater and propagate globally via Earth–ionosphere waveguide."}, {"n": "Volga 149.200", "u": "/e/radio-spectrum/volga-149-200/", "s": "Russian military hotline for Ukrainian servicemen to surrender."}, {"n": "5G NR frequency bands", "u": "/e/radio-spectrum/5g-nr-frequency-bands/", "s": "5G NR frequency bands span sub-6 GHz and millimeter-wave ranges."}, {"n": "2008 United States wireless spectrum auction", "u": "/e/radio-spectrum/2008-united-states-wireless-spectrum-auction/", "s": "First FCC auction with package bidding and open-access rules."}, {"n": "2016 United States wireless spectrum auction", "u": "/e/radio-spectrum/2016-united-states-wireless-spectrum-auction/", "s": "Auction 1001 reallocated 100 MHz of UHF television spectrum for wireless use."}, {"n": "AM expanded band", "u": "/e/radio-spectrum/am-expanded-band/", "s": "Extended AM broadcast band above 1600 kHz, adopted for Region 2 in 1990."}, {"n": "Apex (radio band)", "u": "/e/radio-spectrum/apex-radio-band/", "s": "Short-lived US broadcast band that preceded commercial FM radio."}, {"n": "Asia-Pacific Telecommunity band plan", "u": "/e/radio-spectrum/asia-pacific-telecommunity-band-plan/", "s": "A harmonized spectrum plan for mobile broadband in the 700 MHz band."}, {"n": "Broadcast band", "u": "/e/radio-spectrum/broadcast-band/", "s": "Segments of radio spectrum allocated for broadcasting services worldwide."}, {"n": "Citizens band radio", "u": "/e/radio-spectrum/citizens-band-radio/", "s": "A license-free shortwave two-way radio service for personal and business use."}, {"n": "European cable television frequencies", "u": "/e/radio-spectrum/european-cable-television-frequencies/", "s": "Cable TV frequencies repurpose terrestrial bands, causing congestion and unique allocation rules."}, {"n": "Family Radio Service", "u": "/e/radio-spectrum/family-radio-service/", "s": "Unlicensed UHF walkie-talkie service for short-range personal communication."}, {"n": "FM broadcast band", "u": "/e/radio-spectrum/fm-broadcast-band/", "s": "VHF band used for FM radio broadcasting worldwide."}, {"n": "FM extended band in Brazil", "u": "/e/radio-spectrum/fm-extended-band-in-brazil/", "s": "Brazil's extended FM band repurposes former TV channels for AM migration."}, {"n": "General Mobile Radio Service", "u": "/e/radio-spectrum/general-mobile-radio-service/", "s": "A licensed UHF radio service for short-range two-way voice communication."}, {"n": "Geneva Frequency Plan of 1975", "u": "/e/radio-spectrum/geneva-frequency-plan-of-1975/", "s": "International plan for long- and medium-wave broadcasting outside the Americas."}, {"n": "ISM radio band", "u": "/e/radio-spectrum/ism-radio-band/", "s": "Reserved for industrial, scientific, medical use; now crowded with unlicensed communications."}, {"n": "Longwave", "u": "/e/radio-spectrum/longwave/", "s": "Longwave uses ground waves for long-distance, stable radio communication."}, {"n": "LPD433", "u": "/e/radio-spectrum/lpd433/", "s": "License-free UHF band for short-range voice and control devices."}, {"n": "LTE frequency bands", "u": "/e/radio-spectrum/lte-frequency-bands/", "s": "LTE frequency bands enable mobile communication across standardized radio spectrum allocations."}, {"n": "Medical Device Radiocommunications Service", "u": "/e/radio-spectrum/medical-device-radiocommunications-service/", "s": "FCC spectrum for medical implant and body-worn device communications."}, {"n": "Multi-Use Radio Service", "u": "/e/radio-spectrum/multi-use-radio-service/", "s": "A licensed-by-rule VHF radio service for short-distance personal or business use."}, {"n": "Near-field communication", "u": "/e/radio-spectrum/near-field-communication/", "s": "Short-range wireless protocol for data exchange and charging."}, {"n": "NOAA Weather Radio", "u": "/e/radio-spectrum/noaa-weather-radio/", "s": "A nationwide VHF FM network broadcasting weather and all-hazards alerts."}, {"n": "North American Regional Broadcasting Agreement", "u": "/e/radio-spectrum/north-american-regional-broadcasting-agreement/", "s": "International treaties standardizing AM band allocations in North America."}, {"n": "Medium wave", "u": "/e/radio-spectrum/medium-wave/", "s": "The historic AM broadcast band spanning medium frequencies."}, {"n": "Pan-American television frequencies", "u": "/e/radio-spectrum/pan-american-television-frequencies/", "s": "Pan-American TV frequencies span VHF and UHF bands with distinct allocations."}, {"n": "Personal radio service", "u": "/e/radio-spectrum/personal-radio-service/", "s": "Personal radio services enable license-free two-way radio communication for individuals worldwide."}, {"n": "PMR446", "u": "/e/radio-spectrum/pmr446/", "s": "Licence-exempt UHF personal radio service used across Europe and beyond."}, {"n": "Shortwave bands", "u": "/e/radio-spectrum/shortwave-bands/", "s": "Shortwave bands enable long-distance skywave communication via ionospheric reflection."}, {"n": "TV-band device", "u": "/e/radio-spectrum/tv-band-device/", "s": "Unlicensed devices using vacant TV channels for wireless communication."}, {"n": "UHF CB", "u": "/e/radio-spectrum/uhf-cb/", "s": "A class-licensed citizen's band radio service across multiple countries."}, {"n": "UMTS", "u": "/e/radio-spectrum/umts/", "s": "3G cellular system based on GSM, using W-CDMA radio access."}, {"n": "UMTS frequency bands", "u": "/e/radio-spectrum/umts-frequency-bands/", "s": "Radio frequencies for 3G UMTS networks, allocated at WARC-92."}, {"n": "Unlicensed National Information Infrastructure", "u": "/e/radio-spectrum/unlicensed-national-information-infrastructure/", "s": "FCC-defined spectrum for unlicensed WLAN and wireless ISP use."}, {"n": "Weather radio", "u": "/e/radio-spectrum/weather-radio/", "s": "Dedicated VHF-FM receiver for government weather and emergency alerts."}, {"n": "Microwave", "u": "/e/radio-spectrum/microwave/", "s": "Electromagnetic radiation between radio waves and infrared, used widely in technology."}]