Table of Hertz Frequencies and Applications
| Frequency Range | Application |
|---|---|
| 0-20 Hz | Infrasound, used in seismology and for studying animal communication |
| 20-20,000 Hz | Audible sound for human hearing |
| 30,000-300,000 Hz | Ultrasound, used in medical imaging and industrial cleaning |
| 3-30 kHz | Very Low Frequency (VLF), used in navigation and time signal broadcasting |
| 30-300 kHz | Low Frequency (LF), used in navigation and AM radio broadcasting |
| 300-3000 kHz | Medium Frequency (MF), used in AM radio broadcasting |
| 3-30 MHz | High Frequency (HF), used in shortwave radio and aviation communication |
| 30-300 MHz | Very High Frequency (VHF), used in FM radio, television broadcasting, and aviation |
| 300-3000 MHz | Ultra High Frequency (UHF), used in television broadcasting, cellular networks, and GPS |
| 3-30 GHz | Super High Frequency (SHF), used in satellite communication and microwave devices |
| 30-300 GHz | Extremely High Frequency (EHF), used in millimeter-wave radar and 5G technology |
| 300 GHz – 400 THz | Infrared radiation, used in remote controls, night vision, and fiber-optic communication |
| 400-790 THz | Visible light |
| 790 THz – 30 PHz | Ultraviolet light, used in sterilization and black lights |
| 30 PHz – 30 EHz | X-rays, used in medical imaging and airport security |
| Above 30 EHz | Gamma rays, used in nuclear medicine and radiation therapy |
This table provides a simplified overview and covers some of the general applications within each frequency range. Specific uses vary based on regulations and technology.
📋 FCC Licensed Frequency Applications
The Federal Communications Commission (FCC) licenses a range of frequencies for various communication and technology applications, such as:
- AM and FM Radio Broadcasting: 535 kHz to 1705 kHz for AM and 88 MHz to 108 MHz for FM
- Television Broadcasting: 54 MHz to 806 MHz
- Cellular and PCS (Personal Communications Service): 698 MHz to 806 MHz
- Pagers: 900 MHz
- Wireless Microphones and In-Ear Monitors: 470 MHz to 608 MHz and 614 MHz to 698 MHz
- Satellite Communications: Various frequency bands
- Wireless Internet Providers: 2.4 GHz and 5 GHz bands
- GPS (Global Positioning System): 1575.42 MHz
- Marine and Aeronautical Radio: Various frequency bands
- Amateur Radio: Various frequency bands
- Public Safety and Emergency Services: Various frequency bands
Note: This is not an exhaustive list; other frequency uses are possible depending on application and regulatory requirements.
📡 Additional FCC Frequency Bands
The FCC allocates additional frequency bands for specialized uses:
- Land Mobile Radio Services: VHF and UHF bands
- Fixed Microwave Services: Various frequency bands
- Industrial, Scientific, and Medical (ISM) Devices: Various frequency bands
- Short-Range Wireless Devices (Bluetooth, Zigbee): Various frequency bands
- Remote Control and Telemetry: Various frequency bands
- Unlicensed National Information Infrastructure (U-NII) Devices: 5.15-5.35 GHz and 5.47-5.725 GHz
- Automotive Radar: 76-81 GHz
- Wireless Power Transmission: Various frequency bands
- Radio Astronomy: Various frequency bands
The FCC’s frequency management also includes coordination with international organizations to regulate shared frequencies across borders and in global applications.
🌍 International and Cross-Border Frequency Management
The FCC, alongside the International Telecommunication Union (ITU) and other global entities, regulates frequencies for cross-border and international communication. These include:
- Maritime Communications
- Aeronautical Communications
- Satellite Communications
These regulations ensure compatibility and minimize interference in globally shared frequencies.
⚠️ License-Exempt and Unlicensed Frequency Bands
Certain frequency bands are designated as unlicensed or license-exempt by the FCC, including 900 MHz, 2.4 GHz, and 5 GHz. These bands can be used without individual licenses, though restrictions exist to prevent interference.
🔗 Additional Resources
For the latest information on FCC licensed frequencies, visit the following links:
- FCC Official Website
- Common Wireless Spectrum Frequencies
- FCC Overview
- ISO International Organization for Standardization
This overview outlines the FCC’s frequency allocations across various sectors and applications, covering the practical use of licensed frequencies, regulatory compliance, and key international considerations.