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Electromagnetic Frequency Spectrum

Electromagnetic radiation is comprised of electric and magnetic fields that move at right angles to each other at the speed of light.
Below are some common examples; Click on the type/category (HF - High Frequency, VHF - Very High Frequency, etc. to the left to get a more complete list.:
Note: numbers in parenthesis are ITU bands.
Type Band Frequency Wave Length 1
RF - Radio Frequencies 3 HZ-100 GHz  
ELF (1) - SLF (2) 1   Metal Detectors, Submarine communications 3 - 300 Hz  
ULF/VF (3)   Audio - Telephone 300 Hz-3 KHz  
VLF (4)   Navigation, Sonar, 3-30 KHz  
LF (5)   Radionavigation Beacons and Maritime 30-190 KHz 1-6 miles
MF (6) LW   NAVTEX, Avalanche Beacon 400-500 KHz 660-750 m
MW   BCB US AM radio 500 KHz - 1 MHz 600-175 m
SW
(4)
  Ham Radio3 1.8-2 MHz 160 m
  Marine, Direction Finding 2-2.18 MHz
HF (7)   Ham Radio 3.6, ... 30 MHz 80, 40, 30, 20, 17, 15, 12, 10 m
  BCB Intl. Short Wave 3.2, 4.7, 5.9, 7.1, 9.4, ... MHz 90,75,60, 49, 41, 31, 25, 22, 19, 16, 15, 13, 11 m
  CB 27 MHz 11 m
VHF (8) Alarm Systems, Door Openers, Baby Monitors, Cordless phones 40-50 MHz 6-7 m
  VHF TV, FM Radio 54-216 MHz 5-1 m
  1¼, 2, 6 m Ham 50, 144, 222 MHz 6-1 m
  Air Traffic Control 138 MHz
  Police, Fire 154-156 MHz
UHF (9) P band Radar 300 MHz 1 m
SARSAT - Search And Rescue Satellite Aided Tracking 406 MHz 74 cm
  Remote Control (Thermometer, ..) 433 MHz  
  FRS, GMRS Walkie Talkie, Auto Racing 465 MHz 64 cm
  UHF TV 470-806 MHz 60 - 40 cm
  70, 33, 23, 13 cm Ham 420 MHz, ... 2.4 GHz 13-70 cm
  Cellular Mobil Telephone, Police 800-890 MHz
  Cordless Phones, GSM Phones Europe 900 MHz 33 cm
  ARNS Navigation 960-1220 MHz
L-Band (Satellite Phone, GPS) 1-2 GHz 30-15 cm
  PCS Mobil Telephone 1.8-2 GHz 15 cm
S-band 2-4 GHz
    Wi-FI, Cordless phones,
    BlueTooth
2.4 GHz 10 cm (4 in.)
SHF (10)         Cordless phones 5.8 GHz 5 cm
C-band
    Satellite
4-8 GHz
X-band
    Navigation Radar
8-12 GHz
  Police Radar 10, 24 GHz 2-3 cm
Ku-band
    Satellite
12-18 GHz
K-band
18-27 GHz
    9, 5, 3, 1.2 cm Ham 3.4, 5.7, ... 24 GHz 1-9 cm
Ka-band
    LMDS
27-40 GHz
27-29 GHz
1 cm
EHF (11)   Radio Astronomy 31, 36, 42, 49, 98, 140, 142-149 GHz
  Vehicle Radar 46, 76
  6, 4, 2.5, 2, 1 mm Ham 47, 75, ...250 GHz 1-6 mm
Beyond RF 100 GHz +
  Infrared 100 GHz - 500 THz 3 mm - 700 nm
  visable light waves 500 THz - 900 THz 700 - 400 nm
  Ultraviolet 750 THz - 30 PHz 10-400nm
  X-rays30 PHz - 30 EHz 10 nm - 10 pm
  Gamma and Cosmic> 1 EHz
1. See Elecrormagnetic Radiation Principles for more information.

2. The boundaries between far infrared light, microwaves, and ultra-high-frequency radio waves are fairly arbitrary and are used variously between different fields of study.

3. Ham Radio - Amateur Radio

4. Shortwave - Many international stations (e.g. BBC) brodcast in English on these frequencies.
LW - Long Wave ..150-515 kHz
MW - Medium Wave..525-1,711 kHz (AM broadcast radio)
SW - Short Wave .1.711-29.9 MHz

Frequency to Wavelength Conversion Chart and Calculator
Equation: f * λ = c
Where:
f = frequency in Hertz (Hz = cycles/sec)
λ = wavelength in meters (m)
c = the speed of light and is approximately equal to 2.998*108 m/sec

(Note: Sound waves are a form of wave energy but they are NOT electromagnetic; They are the result of mechanical vibrations creating compression/pressure waves which require a medium such as air or water to be transmitted. Electromagnetic energy can move through a vacume like space.)

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Source: www.tvtower.com

Radio Frequency (RF) 30 Hz - 300 GHz

ELF 3-30 Hz (Extremely Low Frequency) Metal Detectors SLF 30 Hz-300 Hz (Super Low Frequency) Submarine communications ULF or VF 300 Hz-3000 Hz (Ultra Low Frequency/Voice Frequency) Audio - Telephone VLF 3-30 KHz (Very Low Frequency) Navigation, Sonar LF 30-300 KHz (Low Frequency) 9-190 KHz Radionavigation and Maritime 190-405 KHz Aeronautical and Radio Beacons MF 300 KHz - 3 MHz (Medium Frequency) AM Radio 535 - 1705 KHz Police, Fire 2000-2187 Maritime radio, Direction finding 457 KHz Avalanche Beacon 1800-2000 KHz 160 m amateur radio 2300-2500 120 m Shortwave BCB International Radio HF 3MHz-30MHz (High Frequency) ITU Band 7 3.023 MHz Marine Search and Rescue 4-22 MHz Shortwave Radio 3.2 - 3.4 90 m Shortwave BCB 3.5-4.0 MHz 75/80 m Amateur Radio 4-4.4 MHz Maritime
4.6 Air
4.75-4.95 60 m Shortwave BCB 5.3-5.4 MHz 60 m Amateur Radio USB Max 50 Watts only 5.5 Air 5.9-6.2 49 m Shortwave BCB Band 6 7.0-7.3 MHz 40 m Amateur Radio Shortwave Band 7 9.5-9.9 MHz 31 m Shortwave BCB Band 9 10.1-10.15 MHz 30 m Amateur Radio 10 MHz Long Range Navigation (LORAN-C) 11.60-12.10 MHz 25 m Shortwave BCB Band 11 13.57 - 13.87 22 m Shortwave BCB Band 13 14.02-14.3 MHz 20 m Amateur Radio 15.10 - 15.80 19 m Shortwave BCB Band 15 17.48 - 17.90 16 m Shortwave BCB Band 17 18 MHz 17 m Amateur Radio 18.90 - 19.02 15 m Shortwave BCB 21 MHz 15 m Amateur Radio 21.45 - 21.85 13 m Shortwave BCB Band 21 24.9 MHz 12 m Amateur Radio 25.60 - 26.10 11 m Shortwave BCB Band 25 27 Citizens Band (CB) Radio (40 channels) 28-29.7 10 m Amateur Radio VHF 30MHz-300MHz (Very High Freq.) ITU Band 8 30.86-32 MHz Public Service 32 - 33 Government 33.4-34 Public Service 35.42-35.46 IMTS Mobile Phone - Base To Car 37-37.4 Public Service 37.9-38 Public Service 39-40 Public Service 40 MHz Garage door openers, alarm systems, etc. 42-42.9 Public Service 43.42-43.46 IMTS Mobile Phone - Car To Base 43-49 MHz Alarm Systems, Door Openers, Baby Monitors, Cordless phones, Motorcycle Intercom 49 MHz Baby Monitors 50-54 MHz 6 Meter Amateur Radio 54-88 MHZ TV Ch. 2 to 6 72 MHz Radio controlled airplanes 75 MHz Radio controlled cars 88-108 MHz FM Radio 108-117 Aircraft - Aeronautical radionavigation service (ARNS) VHF Omnidirectional Range navigation system (VOR) 137-144 Government, Little LEOs (Low Earth Orbiting Satellites), Public Saftey 121.5 MHz Old Locator Beacons (being replaced with 406 MHz) 144-148 2 Meter Amateur Radio 145 MHz MIR space station 146.6 150-156 MURS (Multi-Use Radio Service) low power, short range VHF Citizens Band service. 152 MHz Pagers 152-156 Non-Military LMR (Land Mobil Radio). Various Federal agencies use this band for mutual aid response with local communities (fire fighting, forest fire fighting, medical etc.) 154-156 Police, Fire 155.475 Nationwide Law frequency 156 Goverment Maritime Mobile 158.115- 161.575 Non-Military LMR. 160-161 American Association of Railroads (AAR) - Rail operations 162.025 - 174.000 WX - Band (mostly various US Government) 162.40-162.55 MHz NOAA Weather Radio 173.075 LoJack 174-216 MHZ TV Ch. 7 - 13 215-220 MHz Wildlife tracking collars 219-220 Amateur Radio Pt-to-pt fixed digital message forwarding systems, 222-225 1¼ Meter Amateur Radio 225-400 MHz Military aero, Little LEOs, CMRS UHF 300MHz-3GHz (Ultra High Freq.) ITU Band 9 328-335 Aeronautical Radionavigation 400-419 MHz Government 406 MHz signal via the COSPAS-SARSAT Satellite Notification system - PLBs (Personal Locator Beacons - Wilderness travelers), ELTs (Emergency Locator Beacon - Aircraft) EPIRBs (Emergency Position Indicating Radio Beacon - Marine) 400-401 MSS (mobile satellite service) 420-450 70-cm/440 Amateur Radio, Boimedical Telemetry, WLL 433 MHz RF (Remote Thermometer,) Control (Remote Thermometer,) 434 MHz (ATV band) 450-470 UHF Standard 451-454 Public Service (Police, ..) 452 Taxi 460-462 Public Service (Police, ..) 443-473 MHz Pager 462-467 Citizens Band (2-Way Personal Radio/Walkie-Talkie) 14 channels FRS, 8 channel GMRS 461-469 Auto Racing (pit crew to car) 470-698 TV Ch. 14 -51 470-480 Expanded (Large Metro) Public Safety & Comm. 585-610 Radionavigation See Promoting Interoperability in the 700 MHz Band | FCC.gov 698-746 Reallocated from TV channel 52-59 to commercial services 704-716, 734-746 Band Class 12 (Lower B and C BLocks) 3G data services - Wireless Application Protocol (WAP) 3rd Generation Partnership Project (3GPP) standards for Long-Term Evolution (LTE) 747-806 Reallocated from TV channel 60-69 to mobil phone and other wireless 746-757, 776-787 Upper C BLock 806-824 SMR (ARDIS) Public Service 807-890 TV channels 70-83 821-824 Public Safety 824-849 Cellular Mobil Telephone (AMPS, CDMA, TDMA, CDPD) 800 MHz 851-869 SMR (NEXTEL) & Public Service/Trunking Repeater 866-869 Public Safety (Police, ) 869-894 Cellular Mobil Telephone (AMPS, CDMA, TDMA, CDPD) 800 MHz 894-960 Public Service 896-901 SMR (RAM) 890-960 GSM Mobil Phone in Europe, Israel, Far East, Australia, 900 MHz Cordless Phones 902+ Military Radar 902-928 33-cm/900 Amateur Radio 914-914 Wireless headphones 915 MHz ISM WLAN 930-931 MHz advanced paging/narowband PCS 935-940 SMR 960-1215 MHz ARNS (navigation)

Microwave 1 GHz - 300 GHz

L-band 1000-2000MHz 1,240-1,300 MHz 23-cm/1240 Amateur Radio 1,215-1,390 MSS, GWCS, Radar 1,227 GPS L2 frequency P-code 1,435-1,525 DAB, MSS 1,400-1,700 Radio Astronomy and Weather Satellites 1.4 GHz Cordless Phones 1,559 GPS Aeronautical radionavigation service (ARNS) 1,575 GPS L1 frequency - C/A code, P-Code 1.6 GHz LEO (Low Earth Orbiting Satellites 500-1000 mi.), satellite pagers 1610-1618.7 MHz Globalstar Satellite Phones 1.8 - 2.0 GHz PCS Mobil Telephone (CDMA, TDMA, GSM) 1.8 - 1.9 GHz DECT (Europe) S-band 2000-4000MHz 2.2 GHz WLL, MDS 2.29-2.3 GHz Deep Space communication 2.3-2.45 MHz 13-cm Amateur Radio (Amateur TV) 2.4 GHz MicroWave Oven 2.4 GHz ISM Band - License Free Wireless (Cordless Phone, BlueTooth, 802.11b (Wi-Fi) WLAN using DSSS to 11Mbps) 2.1-2.7 GHz MMDS SHF 3 GHz - 30 GHz (Super High Frequency) ITU Band 10 3.1-3.6 MDS, WLL, FSS 3.3-3.7 GHz WLAN band. C-band 4000-8000MHz 3.7 - 4.2 Satellite to Earth communications 4.4-5.0 GHz FSS, GWCS, Public Saftey 5.5-5.7 WLAN 802.11a 5.725-5.85 GHz ISM U-NII Band License Free - WLAN 802.11a at 54 Mbps (108 Mbps in the future) 5.8-5.9 proposed DSRC, Radar 5.9-6.4 GHz Earth to Satellite communications X-band 8-12 GHz 10.5 Police Radar 10.7-13.2 Commercial use Ku-band 12GHz-18 GHz 11-12 GHz Satellite to ground 12 GHz CARS K-band 18 GHz-27 GHz NASA - Satellite comm 24.15 GHz Police Radar EHF 30 GHz - 300 GHz (Extremely High Frequency) ITU Band 11 Ka-band 27-40 GHz Millimeter Wave Frequencies 20 GHz LEOS 31 GHz LMDS Commco Tec, Winstar 28, 38 V-band 40-75 GHz W-band 75-110 GHz

Beyond Radio Frequency

At 300GHz the wave length is 0.1 mm and the em energy starts to behave more like particles than waves. ( EM energy has properties of both waves and particles or quanta of energy.) 300 GHz - 3THz ITU Band 12 Infrared 100 GHz - 500 THz mm 110-300GHz Far Infrared (FIR) (Thermal Infared) 15-1000 µm Infrared radiation (IR) is used for heat lamps, night vision, Moderate Infrared (MIR) 1.4-15 µm Near Infrared (NIR) 0.7-1.4 µm Wireless remote controls for TVs and data comm (e.g. for PDAs) up to 1Mbs. Visible 500 THz - 900 THz 400nm to 700nm. The visible light spectrum goes Red, Orange, Yellow, Green, Blue, Violet Ultraviolet 750x1012 Hz (THz)- 30x1015 Hz (PHz) Steralization UVA (315-400 nm) - rays penetrate deeper into the skin and are implicated in premature ageing and wrinkling, as well as skin allergies and rashes. They are present all-day and all-year round. UVB (280-315 nm) - rays are responsible for sunburn. They are at their most intense around mid-day, during mid-summer, UVC - (100-280 nm) VUV - ( 10-200 nm) Vacuum UV (absorbed by air) NUV - (300-400 nm) Near UV (visible to birds, insects and fish) MUV - (200-300 nm) Middle UV FUV - (122-200 nm) Far UV X-Rays 30x1015 PHZ - 30x1018 EHz 500 nm - 1 pm (overlaps UV) Medical diagnostics Y Gamma rays 30x1018 - 1028 Hz 500 pm - Food Irradiation, cancer therapy Cosmic rays 30x1018 (EHz)- 1028 Hz NASA defines Cosmic Rays as Particles and high-energy light that bombard the Earth from anywhere beyond its atmosphere. Theoritical Maximum 1043
Super Unification Theory (Gravitation unified with combined force and matter fields) predicts a natural end of space and time at 10-43 sec. and 10-35 m This is the Planck scale and time - space-time becomes quantized and gains infinite curvature, so that the classical concepts of space and time become meaningless. No faster times or shorter distances. There is one unified field.

UV - X-Rays - Gamma:
Some charts have fixed boundaries between X-rays and UV and Gamma rays others have X-rays overlapping.



Terms
802.11 IEEE Wireless LAN standards
AMPS Advanced Mobile phone service.
ARDIS wireless data svc. 800 MHz
ARNS aeronautical radionavigation service (Air traffic control)
ATV  - Amateur Television, also known as fast scan television 
BCB  Broadcast Band (AM) - International (Shortwave)
CARS  Cable Television Relay Service
CDMA Code division multiple access (Mobil phone and 14Kbs data, spread spectrum)
CDPD Cellular digital packet data (19Kbs, AT&T, Verizon, ...)
CEPT Committee of European Posts and Telecommunications
CMRS Commercial Mobile Radio Service
CORES Commission Registration System (FCC) - the online registration system
DAB  Digital Audio Broadcasting
DSRC Dedicated short-range communication 
DECT Digital European Cordless Technology
DSSS Direct Sequence Spread Spectrum
ELT  Emergency Locator Beacon - Aircraft 
EPIRB Emergency Position Indicating Radio Beacon - Marine
FCC  Federal Communications Commission
FRS  Family Radio Service 
  (14 channel + 38 privacy codes 2 mi. walkie talkie no license) 
FSS  Fixed Satellite Services
GHz  Giga (Billion 10^9)Hz
GMRS General Mobile Radio Service (8 channels 4 mi. 5 watts max. license req.)
GNSS Global Navigation Satellite Systems
GPRS General Packet Radio Service (64Kbs, Vodaphone, Mannesman)
GPRs Ground Penetrating Radar Systems
GSM  Global System for Mobile Communications
GWCS General Wireless Communications Service
Hz   Hertz - cycles per second
IG - Industrial Business
IRAC Interdepartment Radio Advisory Committee (NTIA group)
ISM (Industrial, Scientific and Medical band) - un-licensed bands
 e.g. 41 MHz (Garage door openers, ..)
  434 MHz, 868 MHz, 2.4 GHz, 5.8GHz
  902 to 928 MHz
   Spread spectrum     1 W
   Microwave ovens     750 W
   Industrial heaters  up to 100 kW
   Military radar      up to 1000 kW

 2.4 to 2.4835 GHz Wi-FI, Cordless phones, BlueTooth
   Spread spectrum     1 W
   Microwave ovens     900 W

 5.725 to 5.850GHz.
   Spread spectrum     1 W
KHz  Killo (Thousand)Hz
LEOS  Low Earth Orbiting Satellites
LMDS Local Multipoint Distribution System (28GHz)
LMR Land Mobil Radio. Communications between a base station and
    multiple mobile units.
  Used by government organizations, and transportation and security companies.
MHz  Mega  (Million 10^6) Hz
MCS Multipoint Communications Systems
MDS Multipoint Distribution System - wideband wireless telecommunications
    services that are capable of carrying basic and advanced communications such
    as "wireless" cable TV, high-speed Internet access, video teleconferencing,
    and various other multimedia services.
mm mili-meter wave length band
MMDS Multichannel Multipoint Distribution Service
or Microwave Multipoint Distribution Service MSS mobile satellite service MURD Multi-Use Radio Service (MURS) NAB National Associacion of Broadcasters NAVTEX automatic broadcast of localised Maritime Safety Information (MSI) using Radio Telex (also known as Narrow Band Direct Printing, or NBDP) NII National Information Infrastructure NTIA National Telecommunications and Information Administration OFDM Orthogonal Frequency Division Multiplexing PHz Pico Hz (10^15) PCS Personal Communications Service (or System).
Two-way digital wireless services incl. mobil telephn PART 15 - PART of Title 47 of the Code of Federal Regulations which regulates power and RF radiation. PCS - Personal Communication Services (newer frequencies used for mobil phone svc) PDA Personal Digital Assistant (e.g. Palm Pilot, Handspring) RAM PLB - Personal Locator Beacon PMRS Private Mobile Radio Service RAM wireless data svc. 896 - 901 MHz RF - Radio Frequency RNSS radionavigation satellite service RD-LAP Motorola protocol for data over wireless voice channels SCADA Supervisory Control And Data Access (meter reading) Shortwave - 1.7 - 30 MHz (International news, Ham, ...) SMR Specalized Mobil Radio (two-way dispatch and
data services 19.2Kbs, ARDIS, RAM) SST Spread Spectrum technology TDMA Time Division Multiple Access THz Terra Hz (Trillion 10^12) U-NII Unlicensed National Information Infrastructure UP Unified Protocol WLAN Wireless LAN WLL Wireless Local Loop (Telephone svc)

Notation:
Frequency
KHz Killo (Thousand 103) Hz
MHz Mega (Million 106) Hz
GHz Giga (Billion 109) Hz
THz Terra (Trillion 1012) Hz
PHz Peta (1015) Hz
EHz Exa (1018) Hz
Length
cm centi (10-2) meter
mm mili (10-3) meter
µm micro (10-6) meter
nm nano (10-9) meter
Å angstrom (10-10) meter
pm pico (10-12) meter
fm femto (10-15) meter
am atto (10-18) meter

See:
US Frequency Allocation: Dept. of Commerce > The National Telecommunications and Information Administration (NTIA) > Office of Spectrum Management (OSM) > Frequency Chart
  FCC > Office of Engineering and Technology (OET) > radio spectrum > Table (pdf)

radio channel frequencies

International: International Telecommunication Union (ITU) > Radiocommunication Bureau:
  Terrestrial Services Department (TSD)
  Space Network Systems (SNS)

Radio Spectrum Allocation
Wave Length at Elecrormagnetic Radiation Principles
Frequency Tables at symek.com
Radio Frequency and Tables at wikipedia.org
Detailed FCC Table of Frequency Allocations at: 3towers.com, Brooke Clarke
Scanner frequency lists for emergency services and other.

See also:
Electromagnetic Spectrum at:
NASA, gsu.edu, textfiles.com
Radar Frequencies
Health concerns of Electromagnetic Radiaation (EMR)
How electromagnetic radiation reacts with matter
Elecrormagnetic Radiation Principles,
Radio propagation
Radio Service Codes
FCC > Strategic Goals > Spectrum
Radio Spectrum
Microwaves
Frequencies for Satellite TV Communications
Commercial Television Frequencies at tvtower.com

last updated 1 Aug 2012