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300–3000 kHz range of the electromagnetic spectrum
Medium frequency (MF) is the ITU designation for radio frequencies (RF) in the range of 300 kilohertz (kHz) to 3 megahertz (MHz). Part of this band is
Medium_frequency
Radio transmission using wavelengths 200-1000 m
Medium wave (MW) is a part of the medium frequency (MF) radio band used mainly for AM radio broadcasting. The spectrum provides about 120 channels with
Medium_wave
Reserved part of radio spectrum
among the shortwaves, it is actually located near the top end of the medium frequency band. Most of the customary band names given below are only nominal
Amateur radio frequency allocations
Amateur_radio_frequency_allocations
3–30 MHz range of the electromagnetic spectrum
Frequencies immediately below HF are denoted medium frequency (MF), while the next band of higher frequencies is known as the very high frequency (VHF)
High_frequency
Data network that uses electrical wiring
hand, medium-frequency home control devices remain divided, although X10 tends to be dominant. For power grid use, IEEE has approved a low-frequency (≤ 500 kHz)
Power-line_communication
Electromagnetic frequencies ranging from 3 kHz to 300 GHz
Radio frequency (RF) is the oscillation rate of an alternating electric current or voltage or of a magnetic, electric or electromagnetic field or mechanical
Radio_frequency
Interventional procedure
ablation (RFA) is a medical procedure in which heat generated from medium frequency alternating current (in the range of 350–500 kHz) is used to selectively
Radiofrequency_ablation
Range of frequencies or wavelengths of electromagnetic radiation
spectrum is the full range of electromagnetic radiation, organized by frequency or wavelength. The spectrum is divided into separate bands, with different
Electromagnetic_spectrum
30–300 kHz range of the electromagnetic spectrum
Frequencies immediately below LF are denoted very low frequency (VLF), while the next band of higher frequencies is known as the medium frequency (MF)
Low_frequency
Marine radio standard
transmitting predefined digital messages via the medium-frequency (MF), high-frequency (HF) and very-high-frequency (VHF) maritime radio systems. It is a core
Digital_selective_calling
Radio transmissions using wavelengths between 10 m and 100 m
(approximately 100 to 10 metres in wavelength). It lies between the medium frequency band (MF) and the bottom of the VHF band. Radio waves in the shortwave
Shortwave_radio
Number of occurrences or cycles per unit time
travel from one medium to another, their frequency remains the same—only their wavelength and speed change. Measurement of frequency can be done in the
Frequency
Region of the stratosphere
in his honor. The ozone layer absorbs 97 to 99 percent of the Sun's medium-frequency ultraviolet light (from about 200 nm to 315 nm wavelength), which otherwise
Ozone_layer
Electromagnetic spectrum, 3 Hz – 3000 GHz
the electromagnetic spectrum with frequencies from 3 Hz to 3,000 GHz (3 THz). Electromagnetic waves in this frequency range, called radio waves, are widely
Radio_spectrum
American astronomer
that of medium frequency (hectometre) radio signals in the 0.5–3 MHz range, around the AM broadcast bands. However, signals with frequencies below 30 MHz
Grote_Reber
System for remotely transmitting printed notices to ships
sometimes styled Navtex or NavTex, is an international automated medium frequency direct-printing service for delivery of navigational and meteorological
NAVTEX
Disorder of the inner ear
lasting 20 minutes to 12 hours Audiometrically documented low- to medium-frequency sensorineural hearing loss in the affected ear on at least one occasion
Ménière's_disease
Number of pulses of a repeating signal
The pulse-repetition frequency (PRF) is the number of pulses of a repeating signal in a specific time unit. The term is used within a number of technical
Pulse-repetition_frequency
Type of AM radio station
stations since the 1983 adoption of the Regional Agreement for the Medium Frequency Broadcasting Service in Region 2 (Rio Agreement), they are occasionally
Clear-channel_station
List of shortwave radio spectrum bands
bands are frequency allocations for use within the shortwave radio spectrum (the upper medium frequency [MF] band and all of the high frequency [HF] band)
Shortwave_bands
Aviation navigation system
when they took over from the older radio beacon and four-course (low/medium frequency range) system. Some of the older range stations survived, with the
VHF_omnidirectional_range
Radio transmissions consisting of only a single repeating Morse code letter
locations: Transmissions of the "P" beacon in December 2007, even on medium frequency (420 and 583 kHz), suggest the Russian naval base at Kaliningrad as
Letter_beacon
Physical model of propagating energy
permeability of the medium is constant for different frequency EM waves, this is called a non-dispersive medium. In this case all EM wave frequencies would travel
Electromagnetic_radiation
Human Y-chromosome DNA haplogroup
high frequency in Tibetans and other Tibeto-Burmese populations and geographical close groups. D is also distributed with low to medium frequency in Central
Haplogroup_D-M55
Equipment used in induction heating
heating. Typically an induction heater operates at either medium frequency (MF) or radio frequency (RF) ranges. Four main component systems form the basis
Induction_heater
Use of radio waves for communication
communicating using radio waves. Radio waves are electromagnetic waves of frequency between 3 hertz (Hz) and 300 gigahertz (GHz). They are generated by an
Radio
Designated route along which aircraft travel between airports
Aviation Administration (FAA) in two ways: "VOR Federal airways and Low/Medium Frequency (L/MF) (Colored) Federal airways" To guide airmail pilots on their
Airway_(aviation)
Destroyer of the Royal Canadian Navy
one SQS-503 hull mounted active search sonar and one SQS-504 VDS medium frequency active search sonar. For fire control purposes they were given one
HMCS_Annapolis_(DDH_265)
Frequency change of a wave for observer relative to its source
between observed frequency f {\displaystyle f} and emitting frequency f 0 {\displaystyle f_{\text{0}}} of a wave propagating through a medium is given by:
Doppler_effect
Oscillator used in radio receivers
use of the basic diode detector in the receiver, a method used for medium frequency (MF) marine communications up to 2000 (emission type A2A). Radio transmission
Beat_frequency_oscillator
Range of frequencies that can be heard by humans or other animals
worse at low and partially medium frequencies, while men are more likely to suffer from hearing loss at high frequencies. Audiograms of human hearing
Hearing_range
Frequency to which a carrier wave is shifted during transmission or reception
intermediate frequency (IF) is a frequency to which a carrier wave is shifted as an intermediate step in transmission or reception. The intermediate frequency is
Intermediate_frequency
Canadian warship class (1964–1998)
one SQS-503 hull mounted active search sonar and one SQS-504 VDS medium frequency active search sonar. For fire control purposes they were given one
Annapolis-class_destroyer
Type of adjustable-speed drive
software. VFDs include low- and medium-voltage AC–AC and DC–AC topologies. Pulse-width modulation (PWM) variable-frequency drive projects started in the
Variable-frequency_drive
Class of electronic filter
ranges (medium frequency to extremely high frequency). It is a component that is used in electronic systems to pass or reject specific frequencies and attenuate
RF_and_microwave_filter
Amateur radio frequency band
temporary allocations or experimental operations on nearby frequencies. The band is in the medium frequency (MF) region, within the 415–526.5 kHz maritime band
630-meter_band
Radio transmitter manufacturer
SONAR high-power low-frequency amplifiers and SONAR systems, medium frequency (MF) telegraph and NAVTEX transmitters, and high frequency (HF) amplifiers for
Nautel
Class of multi-role warships for the Pakistan Navy
system, as its primary sonar suite. The YAKAMOS is a hull-mounted, medium-frequency anti-submarine/obstacle-avoidance sonar, capable of detecting sub-surface
Babur-class_corvette
Acoustic sensing method
low frequency. Medium frequency is defined as 5–15 kHz. Another style of division considers low frequency to be under 1 kHz, and medium frequency at between
Sonar
Bare list of a language's words in corpus linguistics
generally sorted by frequency of occurrence (either by graded levels, or as a ranked list). A word list is compiled by lexical frequency analysis within a
Word_list
Vibration that travels via pressure waves in matter
increasing upwards, representing pure frequency components used in Fourier analysis. The speed of sound depends on the medium the waves pass through, and is
Sound
Matter and radiation in the space between the star systems in a galaxy
hydrogen can become opaque in the cold neutral medium. Such absorption only affects photons at the line frequencies: the clouds are otherwise transparent. The
Interstellar_medium
Radio broadcasting using amplitude modulation
military, led to most broadcasting moving to higher frequencies. Medium wave (also known as medium frequency (MF)), is by far the most commonly used AM broadcasting
AM_broadcasting
International radio treaty
The Regional Agreement for the Medium Frequency Broadcasting Service in Region 2, commonly known as the Rio Agreement, is an international treaty defining
Regional Agreement for the Medium Frequency Broadcasting Service in Region 2
Regional_Agreement_for_the_Medium_Frequency_Broadcasting_Service_in_Region_2
1941 AM/mediumwave radio station allocation agreement
supplanted in 1983, with the adoption of the Regional Agreement for the Medium Frequency Broadcasting Service in Region 2 (Rio Agreement), which covered the
North American Regional Broadcasting Agreement
North_American_Regional_Broadcasting_Agreement
Topics referred to by the same term
10-4 territory code MF) Medium format (film), a size of camera Medium frequency, radio transmissions between the frequencies of 300 kHz and 3000 kHz Membership
MF
Type of radio antenna
antenna, is a long-wire receiving antenna mainly used in the low frequency and medium frequency radio bands, invented by H.H. Beverage in 1921. It is used by
Beverage_antenna
Transmission of language with brief pulses
monitors any radio frequencies for Morse code transmissions, including the international medium frequency (MF) distress frequency of 500 kHz. However
Morse_code
Visible difference in brightness or color
from narrow (high spatial frequency) to wide (low spatial frequency) bars across the width of the grating. The high-frequency cut-off represents the optical
Contrast_(vision)
Navigation system formerly used by aircraft
international standards, the frequency band below 300 kHz is "Low Frequency", and above that "Medium Frequency". Since LFR frequencies "straddled" the dividing
Low-frequency_radio_range
Measure of the electric polarizability of a dielectric material
the position in the medium, the frequency of the field applied, humidity, temperature, and other parameters. In a nonlinear medium, the permittivity can
Permittivity
has two amplifiers - one for driving the low and medium frequency and the other for high frequency. There are five drivers in the speaker, one 2.5" woofer
Sound_Blaster_Roar
Distance over which a wave's shape repeats
{\displaystyle f} is the wave's frequency. In a dispersive medium, the phase speed itself depends upon the frequency of the wave, making the relationship
Wavelength
Vacuum tube with four active electrodes
used for medium-frequency, small signal amplification, and the beam tetrode which appeared later, and was used for audio or radio-frequency power amplification
Tetrode
spectrum used for broadcasting. North American broadcast television frequencies AM broadcasting FM broadcasting Dead air Internet radio Radio network
Broadcast_band
Helicopter with two sets of rotor blades placed on top of each other
power — Reduced Retreating blade stall — Reduced Medium frequency vibrations — Reduced High frequency vibrations — None Anti torque system failure in forward
Coaxial-rotor_aircraft
Relation of wavelength/wavenumber as a function of a wave's frequency
the properties of waves in a medium. A dispersion relation relates the wavelength or wavenumber of a wave to its frequency. Given the dispersion relation
Dispersion_relation
Electric cable with metal jacket (shield) to prevent magnetic interference
flexibility and durability and are particularly effective at low and medium frequencies, though coverage is not complete. Spiral shields are constructed by
Shielded_cable
Physical characteristic of oscillating systems
force or vibration whose frequency matches a resonant frequency (or resonance frequency) of the system, defined as a frequency that generates a maximum
Resonance
Type of VHF radio beacon used in aviation
located at low- or medium-frequency range sites to accurately denote station passage. As airway beacons used the same 3,000 Hz audio frequency as the inner
Marker_beacon
3-30 Hz range of the electromagnetic spectrum
Extremely low frequency (ELF) is the ITU designation for electromagnetic radiation (radio waves) with frequencies from 3 to 30 Hz, and corresponding wavelengths
Extremely_low_frequency
2009 Royal Navy destroyer class
Missile (NSM) , on the Type 45 destroyers. The Type 45 has a bow-mounted medium-frequency Ultra/EDO MFS-7000 sonar but has no shipboard anti-submarine weapons
Type_45_destroyer
US Navy fast attack submarine class
arrays which were air-backed—and consists of a passive array and a medium-frequency active array. Compared to earlier Virginia-class submarines about 40%
Virginia-class_submarine
Effect of a material on light
its frequency. Sometimes the term chromatic dispersion is used to refer to optics specifically, as opposed to wave propagation in general. A medium having
Dispersion_(optics)
Class of diesel-electric submarine
sonar suite: TAS-3 passive low-frequency towed array sonar (deployed from sail) FAS-3 passive low-, and medium-frequency hull-mounted flank array sonar
Type_212A_submarine
start of production. High frequency band ("KB") 30.6-31.8m, Medium frequency band ("СВ") 186.7-571.4m. An audio frequency power amplifier based on four
Olimpik
Medical treatment using electromagnetically-induced heat
(shortwave diathermy) differs substantially from medium frequency diathermy which uses much lower frequencies (between 0.5 MHz and 1.00 MHz); the latter encountering
Diathermy
Internationally recognized means for obtaining help
spoken voice Mayday message by radio over very high frequency channel 16 (156.8 MHz) or medium frequency on 2182 kHz Transmitting a digital distress signal
Distress_signal
Enhanced ionization of the ionosphere
radio-wave absorption that is most severe in the upper medium frequency (MF) and lower high frequency (HF) ranges, and as a result often interrupts or interferes
Sudden ionospheric disturbance
Sudden_ionospheric_disturbance
marine communications on leisure crafts using Marine VHF, Medium Frequency, High Frequency radios and Inmarsat satellite communication as agreed in Global
Long_Range_Certificate
Radio wave propagating along the Earth's surface
medium, and skywave via the ionosphere. Ground wave is important for radio signals below 30 MHz, but is generally insignificant at higher frequencies
Ground_wave
standard provides several radio frequency bands for use in Wi-Fi communications, each divided into a multitude of frequency channels numbered at 5 MHz spacing
List_of_WLAN_channels
Electric current that periodically reverses direction
energy loss due to Ohmic heating (also called I2R loss). For low to medium frequencies, conductors can be divided into stranded wires, each insulated from
Alternating_current
is also allowed on the medium frequency band, also known as the AM broadcast band. Similar to LowFER, MedFER is medium-frequency experimental radio. MedFER
LowFER
Conduit for signal propagation
these frequencies are used for mine communication and military communication with submerged submarines. At medium wave and shortwave frequencies (MF and
Transmission_medium
Convention that is widely accepted but unofficial
portable hard drives) usually using micro USB plug and socket. BNC for medium-frequency signal in electronic engineering testing (commonly used by signal generators
De_facto_standard
Radio signal transmission method
Frequency-hopping spread spectrum (FHSS) is a method of transmitting radio signals by rapidly changing the carrier frequency among many frequencies occupying
Frequency-hopping spread spectrum
Frequency-hopping_spread_spectrum
Layer of the Earth's ionosphere
Earth's ionosphere. It is also known as the E region. It reflects medium-frequency radio waves. Because of this reflective layer, radio waves radiated
Kennelly–Heaviside_layer
Radio receiver for public reception
283 kHz in the longwave range, and between 526 and 1706 kHz in the medium frequency (MF) range of the radio spectrum. AM broadcasting is also permitted
Broadcast_radio_receiver
International agreement about radio broadcast frequencies
American Regional Broadcasting Agreement Regional Agreement for the Medium Frequency Broadcasting Service in Region 2 "Government regulations and state
Geneva_Frequency_Plan_of_1975
Radio frequencies used in civil aviation
navigation aids (navaids) use other frequencies: Non-directional beacons (NDB)s operate on low frequency and medium frequency bands 190–415 kHz and 510–535 kHz
Airband
Prehistoric inhabitants in Japan
Nagasaki Prefecture, Okinawa and among the Ainu. And it is seen at medium frequency in the southern part of Shikoku, southern part of the Kii Peninsula
Jōmon_people
Study of sound relating to biology
vibrations produced by elephants whose principal frequency component is around 15 Hz, and low- to medium-frequency substrate-borne vibrations used by most insect
Bioacoustics
1940–41 bombing of Britain during WWII
Luftwaffe was ready to conduct big raids. German beacons operated on the medium-frequency band and the signals involved a two-letter Morse identifier followed
The_Blitz
Martadinata-class frigate
control system, LINK Y Mk 2 datalink system, Thales UMS 4132 Kingklip medium frequency active/passive hull-mounted sonar, CAPTAS 2/UMS 4229 variable depth
KRI_Raden_Eddy_Martadinata
Behaviour of travelling radio waves
these frequencies are used for mine communication and military communication with submerged submarines. At medium wave and shortwave frequencies (MF and
Radio_propagation
Sinusoidal wave without any modulation
to allow several carriers at different frequencies to share a common physical transmission medium by frequency division multiplexing (as in a cable television
Carrier_wave
Passive two-terminal electrical component that stores energy in its magnetic field
losses. Another material is powdered iron cemented with a binder. Medium frequency equipment almost exclusively uses powdered iron cores, and inductors
Inductor
Classification of radio frequency signals
designator. A3E or A3E G Ordinary amplitude modulation used for low frequency and medium frequency AM broadcasting A8E, A8E H AM stereo broadcasting. F8E, F8E H
Types_of_radio_emissions
Computation machine that uses continuously varying data technology
no low frequency limitation), in the 1960s an attempt was made in the French ANALAC computer to use an alternative technology: medium frequency carrier
Analog_computer
surface wave (ground wave) radio transmissions. Low frequency (30–300 kHz) and medium frequency (300–3000 kHz) radio transmissions are particularly reliant
Ground_conductivity
Radio instrument array in the Canadian Arctic
morphology. Ionosondes transmit pulses of radio signals in the Medium Frequency (MF) and High Frequency (HF) ranges, whose echos are analyzed to measure height
Canadian High Arctic Ionospheric Network
Canadian_High_Arctic_Ionospheric_Network
Welding by passing electric current through work pieces
form of direct current, alternating current, medium frequency half-wave direct current, or high-frequency half wave direct current. If excessive heat is
Electric_resistance_welding
Metallurgical process
furnace in the United States of America in 1920.[citation needed] Medium frequency furnaces were seen soon afterwards in England and Sweden in 1927. The
Vacuum_induction_melting
Radio transmission using wavelengths above 1000 m
very low frequency (VLF, 3–30 kHz) bands. Sometimes the upper limit is taken to be higher than 300 kHz, but not above the start of the medium wave broadcast
Longwave
Surname list
in Australia, Canada, New Zealand and the United States. It is of Medium Frequency in Scotland and Northern Ireland (using the benchmarks of the Guild
Cree_(surname)
Optical frequency combs
optical frequency combs. These frequency combs are generated by mode-locked lasers where the dominating gain stems from a conventional laser gain medium, which
Kerr_frequency_comb
Telecommunications network
international distress calling is performed at either medium frequency (MF) or at high frequency (HF). Martin Weik (6 December 2012). Communications Standard
Maritime broadcast communications net
Maritime_broadcast_communications_net
Type of electromagnetic radiation
radiation with the lowest frequencies and the longest wavelengths in the electromagnetic spectrum, typically with frequencies below 300 gigahertz (GHz)
Radio_wave
Dependence of group velocity on frequency
this expression and inserting it into the post-medium frequency-domain expression results in a post-medium time-domain expression E post ( t ) = A post
Group-velocity_dispersion
MEDIUM FREQUENCY
MEDIUM FREQUENCY
Girl/Female
Bengali, Gujarati, Hindu, Indian, Kannada, Malayalam, Marathi, Sanskrit, Sindhi, Telugu
The Earth
Girl/Female
Hindu, Indian
Peahen
Girl/Female
Muslim
Holy city of saudi arabia
Boy/Male
Indian
Land; Earth
Girl/Female
Arabic
City of the Prophet. In Medina Mohammed began his campaign to establish Islam.
Boy/Male
Indian
Surname or Lastname
English
English : from a nickname for a physician.
Girl/Female
Arabic, Australian, Muslim
Mary
Girl/Female
Arabic, Australian, British, Danish, English, Hebrew
City of the Prophet; In Medina Mohammad Began his Campaign to Establish Islam
Girl/Female
Muslim/Islamic
Holy city of Saudi Arabia
Boy/Male
Indian
Medium
Boy/Male
Indian, Punjabi, Sikh
Earth
Girl/Female
Indian
Holy city of saudi arabia
Male
Egyptian
, a royal scribe.
Biblical
measure; habit; covering
Girl/Female
Arabic, Indian, Kannada, Muslim
Name of Mountain in Medina
Girl/Female
Christian, Gujarati, Hindu, Indian, Kannada, Marathi, Sindhi, Telugu
Wished-for Child
Girl/Female
Arabic, Muslim
A Mountain in Medina
Girl/Female
Australian, Biblical, French, Greek, Iranian, Latin
Measure; Habit; Covering
Surname or Lastname
English or Irish
English or Irish : unexplained. Perhaps an Anglicized form of Gaelic Mac Thom ‘son of Tom’.
MEDIUM FREQUENCY
MEDIUM FREQUENCY
Boy/Male
Sikh
Heavenly body, A star, Pearl
Girl/Female
Indian
Pleiades, Constellation, Taurus, Star
Boy/Male
Indian, Tamil
Worship; Warrior in Prayer
Male
English
Short form of English Nicholas/Nickolas, NICK means "victor of the people."
Boy/Male
Indian
Water Droplets Calm
Female
Arthurian
, alive (an enchantress).
Boy/Male
Assamese, Bengali, Hindu, Indian, Kannada, Tamil
Precious; Loveable
Boy/Male
Hebrew
Heel; replaces.
Boy/Male
Tamil
Lord of victory, Brilliant
Boy/Male
Hindi
Soul.
MEDIUM FREQUENCY
MEDIUM FREQUENCY
MEDIUM FREQUENCY
MEDIUM FREQUENCY
MEDIUM FREQUENCY
n.
The liquid vehicle with which dry colors are ground and prepared for application.
n.
pl. of Medium.
n.
See 2d Media.
n.
The mean or middle term of a syllogism; that by which the extremes are brought into connection.
a.
Being in the middle; running through the middle; as, a median groove.
n.
An average.
pl.
of Medium
a.
Of or pertaining to a mean or average; mean; as, medial alligation.
n.
The front median plate of the labium in insects. See Labium.
n.
A median line or point.
pl.
of Medium
n.
A trade name for printing and writing paper of certain sizes. See Paper.
pl.
of Medius
pl.
of Media
n.
A substance through which an effect is transmitted from one thing to another; as, air is the common medium of sound. Hence: The condition upon which any event or action occurs; necessary means of motion or action; that through or by which anything is accomplished, conveyed, or carried on; specifically, in animal magnetism, spiritualism, etc., a person through whom the action of another being is said to be manifested and transmitted.
n.
Hatred; dislike; as, his conduct brought him into odium, or, brought odium upon him.
a.
Having a middle position or degree; mean; intermediate; medial; as, a horse of medium size; a decoction of medium strength.
a.
Having a medium size; as, a medium-sized man.
n.
See Tedium.
n.
A leguminous plant of the genus Medicago. The black medic is the Medicago lupulina; the purple medic, or lucern, is M. sativa.