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microwave
I am sorry, but the above answer of "microwave" is dead wrong! 3000 Khz = 3Mhz. 3-30 Mhz is called the HF frequency band. 3-30 Ghz (1000 times higher) is the microwave band.
A lot of the worldwide Amateur "Ham" Radio bands are located on 3-30Mhz. All of the "shortwave" radio stations. The US Bureau of Standards operates on EXACT frequencies of 5.000000, 10.000000, and 20.000000 - these are also the EXACT TIME beacons that many clocks synchronize to*. There are radio beacons, jamming signals from third world countries, military radio, RTTY (basically "fax" by radio), weather satellites, CB radio, Radio Control frequencies (for RC controlled cars, planes, boats), diathermy machines (used in doctors offices), and the HAARP project in Alaska which is "supposedly" for Auroral research.
*The "atomic clocks" and watches that most consumers can buy are synced to this same WWV source, but operate at 60 Khz (or 60,000 hertz). 10Khz is about the "basement" of the radio frequency bands.
Wiki User
∙ 13y ago
Wiki User
∙ 13y agoshortwave
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What is the definition of wave frequency?
The calculation for a frequecy to wavelength is:speed of light/frequency = wavelength.e.g. freq = 28 mHz approximate speed of light = 300^6 in metres per second.(cancelling the zeros)300/28 = 10.7 metres28 mHz = c.ten metre wavelength.For AM/FM radio, the usual frequencies are:Longwave AM Radio = 148.5 - 283.5 kHz (LF)Mediumwave AM Radio = 530 kHz - 1710 kHz (MF)Shortwave AM Radio = 3 MHz - 30 MHz (HF)Average FM Radio = 76 MHz
What is 88 to 108 MHz?
108 to 108 MHz is the radio frequency range assigned to the audio portion of broadcast television channels.
Who sent the first message to Guglielmo Marconi?
His radio equipment radiated over a broad range of frequencies, and would have been considered unacceptable interference today. (Fortunately there was nobody else to be interfered with at the time.) Based on the physical details of its construction, the equipment probably splattered radio energy over a bandwidth centered somewhere just below the present AM broadcast band ... roughly 0.5 MHz or so.
Which types of electromagnetic waves are used for communication?
Technically all could be used for communication. Although not all may be suited for the use. Here are a few examples: Radio waves - short wave/long wave radio Microwaves - Used for communication of space objects (spacecraft, satellites, radar etc) Infra-red - Used as a wireless communication between devices like mobile phones Ultra Violet - Butterflies use two ultraviolet signals, UV reflectance or absorbance as a communication system X-Rays - High powered telescopes Dont forget fibre optics for the visible part of the spectrum.
If a radio wave vibrates at 80.0 MHz what is its wavelength?
80 HZ is the frequency of a wave varying at 80 times per second. It could be an acoustic wave (sound), or an electromagnetic wave. (radio or power line)
Harris vhf radio can communicate with prc77 radio?
The PRC77 radio operates on 30.000 to 75.95 MHz. If the Harris radio operates on any of the same frequencies (I know you said it's VHF, but VHF covers 30 to 300 MHz), then it can.
What is the freqs for satellite radio?
The XM Radio satellites use S-band frequencies from 2,332.50 through 2,345.00 MHz, and Sirius Radio uses adjacent frequencies 2,320.00 through 2,332.50 MHz.
Key fob radio frequencies?
Most work between 300 MHz to 450 MHz.
What are the FM radio frequencies?
Depends on the radio, it can be just about anything.
What Amateur radio band is 2 meters in... UHF... VF?
The so-called "2 meters" Amateur radio allocation is the band of 144 - 148 MHz in the US. Frequencies from 30 to 300 MHz are tagged 'VHF'. 'VF' typically means 'voice frequency' and is irrelevant to this discussion. "HF" = 3 to 30 MHz. "UHF" = 300 to 3000 MHz.
What is the conversion figure for 648am radio frequency equivalent to mhz?
AM radio frequencies are in KHZ, or thousands of cycles per second. MHZ is 1000 KHZ 648AM on your dial is .648 MHZ
What is the frequency of radio wave?
Fm radio waves travel at various frequencies between 87.5 MHz and 108.0 MHz
What radio frequencies do international air flights use?
110 to 130 MHz.
UMTS Terrestrial Radio Access Network frequencies allocation?
2100 mhz
Does Bluetooth use radio waves or satellite?
Yes, Bluetooth operates at radio frequencies between 2400 MHz and 2483.5 MHz in the 2.4 GHz UHF band using frequency hopping spread spectrum techniques.
In physical science what is a short radio wave?
Shortwave radio operates between the frequencies of 3,000 kHz (3 MHz) and 30,000 kHz (30 MHz). You could also describe the waves as high frequency. Shortwaves can travel farther because they mass through matter with much less resistance.
How do you communicate with astronauts if radio waves are reflected back to earth?
Radio signals at frequencies up to roughly 40 to 60 MHz are absorbed or reflected from the ionosphere. At higher frequencies, the signals easily penetrate the ionosphere and continue on into space. This is the reason that AM radio (1 MHz) and "short-wave" broadcasts (4-13 MHz) are often received from great distances, but TV (54 MHz and up) and FM radio (100 MHz) are not.
