Magnitude (frequency)
This is a compilation of frequencies of different magnitudes for comparison purposes. The information is often to be understood as “typical values”; the converted values are rounded.
The basic unit of frequency in the international system of units is 1 Hertz ( unit symbol Hz ), the formula symbol .
Frequencies below 1 Hz
- “Once in a lifetime” ≈ 0.00000000042 Hz = 4.2 · 10 −10 Hz - once in a lifetime, assuming a life expectancy of 75 years
- “Once a year ” ≈ 0.0000000317 Hz = 3.17 · 10 −8 Hz - the earth's orbital frequency around the sun, for example in use as the annuality of natural events
- " Daily " ≈ 0.000011574 Hz = 1.1574 · 10 −5 Hz - once per sunny day , mean frequency of day-night alternation.
- 0.5–0.75 Hz ≈ 6 · 10 −1 Hz - resting pulse of a trained endurance athlete
1 Hz to 10 Hz
- ≈ 1–1.25 Hz - resting heart rate of a healthy adult
- ≈ 2 Hz - resting heart rate of a newborn
- 7.83 Hz - basic frequency of the Schumann resonance , corresponds roughly to the speed of light / circumference of the earth . Also not quite correctly called the earth's resonance frequency
10 Hz to 100 Hz
- 16–20 Hz - lower limit of the human hearing range (lower frequencies: infrasound )
- 16 ⅔ Hz or 16.7 Hz - frequency of parts of the traction current network in Central Europe
- 18.20651 Hz - frequency for the 55 ms timer of the IBM Intel and AMD CPU PCs (4.772727 MHz / 4/65536)
- 24 Hz - frames per second when projecting 35–70 mm films and IMAX
- 25 Hz - frequency of parts of the traction power network in North America
- 25 Hz - ringing voltage (also called ringing current, call) is used in telecommunications. Causes the called subscriber to ring
- 25 Hz - single frames per second of the television standards PAL and SECAM
- 48 Hz - frames per second when projecting IMAX HD
- 50 Hz - frequency of the three-phase network in Europe , Australia , most of Asia and Africa and parts of South America, as well as parts of the traction current network in Europe (e.g. France), e.g. the tone , G (Contra-G)
- 50 Hz - refresh rate of the television standards PAL and SECAM (50 fields per second gives 25 frames per second)
- 60 Hz - frequency of the three-phase network in North America , parts of South America, Liberia , Saudi Arabia , South Korea , the Philippines and parts of Japan , e.g. the tone B
- 59.94 Hz - refresh rate of the NTSC television standard
- 76 Hz - transmitter Sanguine the U.S. NAVY in Republic, Michigan and Clam Lake, Wisconsin
- 82 Hz - Russian transmitter ZEVS
100 Hz to 1000 Hz (1 kHz)
- 400 Hz - frequency of the electrical system voltage of an aircraft
- 440 Hz - The concert pitch a '(dashed a), according to which an orchestra is tuned, is now 440 Hz (or slightly higher).
- 716 Hz - The highest measured rotation frequency of a neutron star to date .
1 kHz to 10 kHz
- 1000 Hz - is the center frequency in the acoustic range. Sinusoidal 1000 Hz are a common measurement tone and is considered normal frequency spread. The units phon and sone are derived from it and it is the starting point for standard frequencies according to EN ISO 266
- 1004 Hz - test tone for telephone systems for the loop around test.
- 1.25 kHz - ignition frequency of a 10-cylinder engine at 15,000 rpm (the typical Formula 1 engine whine)
- 2.350 kHz - center frequency of the Hinz trill for announcing traffic announcements in the ARI system
- 8 kHz - voice sampling rate for ISDN
10 kHz to 100 kHz
- 16–20 kHz - upper limit of the human hearing range (higher frequencies: ultrasound )
- 15.625 kHz - line repetition rate of the PAL television standard
- 15.734 kHz - line repetition rate for the NTSC television standard
- 15.95 kHz - Formerly strongest time signal transmitter rugby in England
- 17.2 kHz - Longest wave transmitter Grimeton (SAQ)
- 19.0 kHz - transmitted pilot tone for VHF radio to display a stereo signal
- 22 kHz - switching frequency for control purposes in satellite receiving systems
- 23.4 kHz - Marine transmitter DHO38 , Saterland
- 31.254 kHz - highest frequency that was generated with a machine transmitter (GLC in Caernarfon)
- 32.768 kHz - the frequency of almost all quartz crystal oscillators . (32768 = 2 15 , binary 100000000000000; number with which, by repeatedly dividing by 2, the pulse rate 1 Hertz for the stepper motor (analog) or the display (digital) of the clock is obtained)
- 37.5 kHz - Signal of the underwater locator Beacon (ULB) for locating a flight recorder underwater
- 44.1 kHz - sampling rate for audio CDs
- 48 kHz - sampling rate for DAT cassettes, audio standard value for the most common video recording methods
- 75 kHz - time signal transmitter HBG , Prangins Switzerland (out of service since September 6, 2012)
- 77.5 kHz - time signal transmitter DCF77 , Mainflingen Germany
100 kHz to 1000 kHz (1 MHz)
- 100 kHz - radio navigation system LORAN-C (in Germany: Rantum on Sylt )
- 108 kHz - clock frequency of the first microprocessor ( Intel 4004 )
- 125 kHz - RFID tags and cards (low frequency)
- 134.2 kHz - RFID tags especially for pets
- 147.3 kHz - Long wave transmitter DDH47 of the German Weather Service in Pinneberg
- 207 kHz - Aholming long wave transmitter from Deutschlandfunk
- 450-470 kHz - 2nd intermediate frequency for radio receivers, usually 455 kHz (1st IF usually 10.7 MHz)
- 457 kHz - Europe-wide frequency for avalanche search devices
- 490 kHz - Navtex with news for the sea
- 518 kHz - Navtex
- 576 kHz - medium wave transmitter Mühlacker of the SWR
- 985.24861 kHz - clock frequency of the CPU of the C64 (1983, PAL version)
- 990 kHz: Medium wave transmitter Berlin-Britz from Deutschlandradio Kultur
1 MHz to 10 MHz
- 1.11931818 MHz - Internal BIOS clock frequency of the first IBM PC (4.7727 MHz / 4)
- 1.386 MHz - Voice of Russia , Bolshakovo
- 1.422 MHz - Medium wave transmitter Heusweiler
- 3.57954545 MHz - color subcarrier frequency of the NTSC television standard (39375 kHz / 11)
- 4.43361875 MHz - color subcarrier frequency of the PAL television standard
- 4.77272727 MHz - clock frequency of the first PC from IBM (NTSC ColorBurst * 4/3)
- 6.075 MHz - Deutsche Welle
- 10.7 MHz - 1st intermediate frequency for VHF radio and CB radio receivers
- 10.8 MHz - intermediate frequency for radio receivers (significantly less than 10.7 MHz)
10 MHz to 100 MHz
- 13.56 MHz - carrier frequency for RFID labels (tags) etc. contactless chip cards
- 20.005 MHz - radio frequency of Sputnik 1, the first man-made Earth satellite in orbit
- 26.565–27.405 MHz CB radio frequency Germany (80 channels)
- 40.003 MHz - 2nd radio frequency from Sputnik 1
- 66 MHz - Highest clock frequency of the first Pentium CPU (P5, 1993)
- 87.5–108 MHz - terrestrial VHF radio
100 MHz to 1000 MHz (1 GHz)
- 121.5 MHz and 243 MHz - International Aviation Emergency Frequency
- 144–146 MHz amateur radio service ( amateur band )
- 430-440 MHz amateur radio service ( amateur band )
- 450 MHz - highest clock frequency of the Pentium II CPU (1998)
- 465.97 MHz - Skyper radio transmitter
- 880–915 MHz - transmission frequencies for GSM 900 (D-Netz)
- 925–960 MHz - receiving frequencies for GSM 900 (D-Netz)
1 GHz to 10 GHz
- 1.090 GHz - transmission frequency of the ADS-B (Automatic Dependent Surveillance) system
- 1.2276 GHz - transmission frequency L2 of the Global Positioning System (P code)
- 1.42040575177 GHz - hyperfine structure transition of the neutral hydrogen atom. Also known as the HI line or the 21 cm line. Use in radio astronomy and as a frequency standard ( MASER )
- 1.57542 GHz - transmission frequency L1 of the Global Positioning System (navigation data, PLC code)
- 1.800-1.900 GHz - DCS 1800 / PCS 1900
- 1.880-1.900 GHz - DECT (cordless phones)
- 1.900-1.920 GHz UMTS - TDD mode
- 1.920–1.980 GHz UMTS - FDD mode uplink
- 2.010-2.025 GHz UMTS - TDD mode
- 2.110–2.170 GHz UMTS - FDD mode downlink
- 2.400–2.4835 GHz - ISM band : unregulated frequencies for WLAN according to IEEE 802.11b , 802.11g and 802.11n or ZigBee , Bluetooth and others
- 2.455 GHz - frequency of the microwaves in the microwave oven
- 5,000–5,835 GHz - unregulated frequencies for WLAN according to IEEE 802.11a, 802.11n and 802.11h
- 9.192631770 GHz - frequency of the oscillation of the hyperfine structure levels of a cesium atom on the basis of which the second is defined.
10 GHz to 100 GHz
- 22.235 GHz - absorption line (spectral lines or resonance lines) of water
- 60 GHz - absorption line of oxygen
100 GHz to 1000 GHz (1 THz)
- 118.75 GHz - absorption line of oxygen
- 183.31 GHz - absorption line of water
- 248–250 GHz - the highest band approved for amateur radio
- 275 GHz highest frequency assigned in Germany
- 300 GHz (1000 microns) - remote infrared (engl. Far Infrared FIR)
- 325.153 GHz - absorption line of water
- 487.249 GHz - absorption line of water
- 556.936 GHz - absorption line of water
1 THz to 10 THz
10 THz to 100 THz
- Distant - 20 THz infrared , (Engl. Far Infrared FIR) (15 microns)
- 20 THz - long-wave infrared ( long wavelength IR , LWIR), IR-C according to DIN (15 µm)
- 28.2823 THz - carbon dioxide laser (10.6 µm)
- 37.5 THz - long-wave infrared ( long wavelength IR , LWIR), IR-C according to DIN (8 µm)
- 37.5 to 100 THz - medium-wave infrared (engl. Mid IR wavelength , MWIR), IR-C according to DIN , even intermediate IR (engl. Intermediate-IR , IIR) (8-33 micron)
Frequencies greater than 100 THz
- 100–214 THz - short wave infrared ( short wavelength IR , SWIR), IR-B according to DIN (3-1.4 µm)
- 214 THz - near infrared (Engl. Near infrared , NIR), IR-A according to DIN (1.4 microns)
- 428 THz - near infrared (Engl. Near infrared , NIR), IR-A according to DIN (microns 0.7)
- 379–476 THz - frequency range of red light ( wavelength 630–790 nm )
- 476–517 THz - frequency range of orange light (wavelength 580–630 nm)
- 517–535 THz - frequency range of yellow light (wavelength 560–580 nm)
- 535–625 THz - frequency range of green light (wavelength 480–560 nm)
- 625–714 THz - frequency range of blue light (wavelength 420–480 nm)
- 714–788 THz - frequency range of violet light (wavelength 380–420 nm)
- 788,265–952,688 THz - UV -A according to DIN 5031, part 7
- 952,688-1071 THz - UV-B according to DIN 5031, part 7
- 1.071–2.998 PHz - UV-C according to DIN 5031, part 7
- 2.466–29.983 PHz - Extreme UV according to ISO -DIS-21348
- 15–150 PHz - soft X-ray radiation
- 150–30,000 PHz - hard X-ray radiation
- > 30 EHz - gamma radiation
- 322 EHz - frequency of the more energetic gamma radiation from Cobalt-60
- > 10,000 YHz - Cosmic Gamma Radiation
literature
- Curt Rint : Handbook for high frequency and electrical technicians Volume 2. 13th edition, Hüthig and Pflaum Verlag GmbH, Heidelberg 1981, ISBN 3-7785-0699-4 .
- Gregor Häberle, Heinz Häberle, Thomas Kleiber: Expertise in radio, television and radio electronics. 3rd edition, Verlag Europa-Lehrmittel, Haan-Gruiten 1996, ISBN 3-8085-3263-7 .
- Horst Stöcker: Pocket book of physics. 4th edition, Verlag Harri Deutsch, Frankfurt am Main 2000, ISBN 3-8171-1628-4 .