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Medium frequency
From Wikipedia, the free encyclopedia
| medium frequency (MF) |
|---|
| Cycles per second: 300 kHz to 3000 kHz Wavelength: 1000 m to 100 m |
Medium frequency (MF), also called Mediumwave (MW), refers to radio frequencies (RF) in the range of 300 kHz to 3000 kHz. Also known as the hectometer band or hectometer wave as the wavelengths range from ten to one hectometers.
Contents |
Medium frequency radio transmissions serves as the most common band for the regular AM broadcast band (which is found in this range). In the US, navigational radio beacons have a band from 190 kHz to 435 kHz. 500 kHz is the Maritime distress and emergency frequency, & 510- 530 kHz is another navigational beacon band. Also, US AM radio or medeum wave radio has a band from 530 kHz- 1700 kHz.
- Electromagnetic radiation
- Electromagnetic spectrum
- Maritime broadcast communications net
- Types of radio emissions
- Global Maritime Distress Safety System
- Navtex
- TV Aerial Plug
| Radio spectrum | ||||||||||
| ELF | SLF | ULF | VLF | LF | MF | HF | VHF | UHF | SHF | EHF |
| 3 Hz | 30 Hz | 300 Hz | 3 kHz | 30 kHz | 300 kHz | 3 MHz | 30 MHz | 300 MHz | 3 GHz | 30 GHz |
| 30 Hz | 300 Hz | 3 kHz | 30 kHz | 300 kHz | 3 MHz | 30 MHz | 300 MHz | 3 GHz | 30 GHz | 300 GHz |
| The Electromagnetic Spectrum | |
|---|---|
|
(Sorted by wavelength, short to long)
Gamma ray • X-ray • Ultraviolet • Visible spectrum • Infrared • Terahertz radiation • Microwave • Radio waves |
|
| Visible (optical) spectrum | Violet • Blue • Green • Yellow • Orange • Red |
| Microwave spectrum | |
| Radio spectrum | EHF • SHF • UHF • VHF • HF • MF • LF • VLF • ULF • SLF • ELF |
| Wavelength designations | |
- Charles Allen Wright and Albert Frederick Puchstein, "Telephone communication, with particular application to medium-frequency alternating currents and electro-motive forces". New York [etc.] McGraw-Hill Book Company, inc., 1st ed., 1925. LCCN 25008275
- Tomislav Stimac, "Definition of frequency bands (VLF, ELF... etc.)". IK1QFK Home Page (vlf.it).
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