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Also the amount of useful information that can be sent in a given period of time on such low frequency carriers is severely limited. The theoretical maximum bit rate on a 30Hz carrier is only 15 bits per second, not even 2 bytes per second (a typical typewriter can do at least 10 characters per second) and the practical maximum bit rate is of course lower, possibly only 3 to 5 bits per second.
But yes, radio waves of 30Hz and even lower can be transmitted.
Wiki User
∙ 9y ago
Wiki User
∙ 9y agoThe lower the frequency, the easier it is to construct circuits to generate radio waves at that
frequency. Transmitting them can be a problem, however.
The problem is that in order to efficiently radiate the wave, the size of the transmitting antenna
must be a significant fraction of the wavelength, otherwise most of the transmitting power never
goes anywhere.
At 30 Hz, the wavelength is something like 6,210 miles, so you can probably begin to understand
the problem. Still, there are radio stations broadcasting internationally for scientific purposes
below 20KHz (wavelength greater than 9 miles).
The so-called 'ELF' (Extremely Low Frequency) radio band, between 30 Hz and 300 Hz (wavelengths
from 621 miles to 6,210 miles) is useful because its signals penetrate the Earth, and this band is
used for communication in and out of deep mines, and also for military purposes such as submarine
communication.
It should be mentioned that as the frequencies go lower, they become less useful for communication,
because there is progressively more and more natural interference, generated by weather systems,
lightning, and processes going on within the Earth itself.
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AM radio signals are?
Amplitute Modulation signals. a modulation(mixing)method used in early radio transmissions.in many countries, radio transmissions below 30 Mhz,are still using this method.short wave,medium wave transmissions,and some extent of VHF transmissions are possible in this method.
What are Electromagnetic wave transmitted by a radio station called?
Radio stations that broadcast in the AM to FM range transmit EM waves known justly as radio waves (EM waves with frequencies from 30 KHz to 300 MHz, or wavelengths from 10 km to 1 m).
An Aircraft vhf communicaion radio is operated at 30 Mhz and how to calculate its wave length?
The frequency can't be 30 Mhz 30 Mhz is a ham radio frequency but to calculate the wavelength, devide 300 by the frequency in Mhz that will give you 10 meters (300/ƒ)
The speed of all electromagnetic waves through space is 300000000 miles per second What is the frequency of a radio wave that has a wavelength of 10 miles?
With the digits written in the question, the unit should be "meters per second", not miles.A radio wave with a wavelength of 10 meters has a frequency of (300,000,000 / 10) = 30 MHz.300,000,000 meters = 186,282 milesA radio wave with a wavelength of 10 miles has a frequency of (186,282 / 10) = 18,628 Hz.
When was Your Radio created?
Your Radio was created on 2003-11-30.
AM radio signals are?
Amplitute Modulation signals. a modulation(mixing)method used in early radio transmissions.in many countries, radio transmissions below 30 Mhz,are still using this method.short wave,medium wave transmissions,and some extent of VHF transmissions are possible in this method.
What are Electromagnetic wave transmitted by a radio station called?
Radio stations that broadcast in the AM to FM range transmit EM waves known justly as radio waves (EM waves with frequencies from 30 KHz to 300 MHz, or wavelengths from 10 km to 1 m).
What is the frequency in broadcasting?
Depending primarily on its frequency,radio wave may travel from the tranmitting to the receiving aerial in a number of ways.The most important of these are : 1. Ground waves (or Surface waves):they are useful for low frequencies of below 1000 KHz . 2. Sky waves: the transmission of radio waves in the frequency range of 3 to 30 MHz. 3.Direct waves( or line-of sight waves):At frequency above 30 MHz ,radio transmission cannot be carried out by ground wave or sky wave.
Does drm radio receive short wave?
Yes, standard DRM is transmitted on long-, medium and also shortwaves up to 30 MHz. The DRM+ extension is transmitted above this frequency and into television VHF band III in its latest iteration. There is more on the DRM system on e.g. www.drm.org (official homepage), www.drmRADIO.dk (listener- and broadcaster-oriented homepage) or www.drmradio.co.uk (more technically oriented homepage).
An Aircraft vhf communicaion radio is operated at 30 Mhz and how to calculate its wave length?
The frequency can't be 30 Mhz 30 Mhz is a ham radio frequency but to calculate the wavelength, devide 300 by the frequency in Mhz that will give you 10 meters (300/ƒ)
How is a radio wave different from the colors?
Radio waves have a much longer wavelength. Colours or visible light have a wavelength of less than 1 thousandth of a millimetre, while radio waves can have wavelengths up to 30 kilometres. They are all types of electromagnetic wave whose existence was predicted by James Clerk Maxwell.
Why do radio waves with extremely long wavelengths such as ELF radio waves need huge antennas?
Answer: An antenna is a tuned circuit, so it have to be tuned to the wavelength of the signal that it will transmit. If the antenna is not tuned properly some of the transmitted power will be feed back to the transmitter and will damage the output stage, SWR (Standing Wave Ratio) is very important, that is the ratio between the power that is transmitted by the antenna and the power that is fed back to the transmitter a zero is ideal but not always possible.The lower the frequency the longer the wave length and a 1/4 wave length is the minimum length that will give one a good SWR. The formula to use when one design a antenna is 300/frequency in MHz, if the frequency is 30 MHz then it is 300/30 = 10 Meter divide it by 4 to get the length of the 1/4 wave antenna that is 2,5 meters.Note: The antenna have to be multiples of a 1/4 wavelength like 1/2 wave or full wave, a 5/8 length can be used but it will need a L/C circuit at the input of the antenna to tune it to the frequency.
Which would be hotter 35 degrees Celsius or 35 degrees Fahrenheit and why?
30 C. is a heat wave, but 30 F is just below freezing. So 30 C is hotter by far.
The speed of all electromagnetic waves through space is 300000000 miles per second What is the frequency of a radio wave that has a wavelength of 10 miles?
With the digits written in the question, the unit should be "meters per second", not miles.A radio wave with a wavelength of 10 meters has a frequency of (300,000,000 / 10) = 30 MHz.300,000,000 meters = 186,282 milesA radio wave with a wavelength of 10 miles has a frequency of (186,282 / 10) = 18,628 Hz.
What is the frequency range for radio wave?
We generate and detect radio waves for purposes of communication, cooking, andscientific investigation, in the frequency range of roughly 30 KHz to 300 GHz,corresponding to wavelengths between 10,000 meters and 1 millimeter.
Describe a difference between radio and microwave signals?
"Radio" or "Radio Waves" are energy expended in the form of electro magnetic radiation. More specifically the term "Radio" refers to a specific frequency pattern of that radiation. This is how Radio broadcasting works. "Microwaves" are a said to be all radio frequency between 300Mhz and 30 Ghz. Thus microwave is a specific class of "Radio Wave". For more in depth explanations research the theroys of Heinrich Hertz.
When was Your Radio created?
Your Radio was created on 2003-11-30.
