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What are the frequencies of radio waves?
Human beings generate, transmit, and receive radio waves, for various purposes,in the range of roughly 60 KHz to 300 GHz.There is a system of formal designation of radio, corresponding to decades (10 times)of frequency/wavelength. You'll recognize some of the abbreviations, like VHF and UHF:Very Low Frequency (VLF)3 - 30 KHz100,000 - 10,000 metersLow Frequency (LF)30 - 300 KHz10,000 - 1,000 metersMedium Frequency (MF)300 KHz - 3 MHz1,000 - 100 metersHigh Frequency (HF)3 - 30 MHz100 - 10 metersVery High Frequency (VHF)30 - 300 MHz10 - 1 meterUltra High Frequency (UHF)300 MHz - 3 GHz1 meter - 10 cmSuper High Frequency (SHF)3 - 30 GHz10 - 1 cmExtreme High Frequency (EHF)30 - 300 GHz1 cm - 1 mm
Why is sound produced by blowing of a whistle shriller than that produced by beating of a drum?
The sound waves produced by a whistle are at a higher frequency than that of a beaten drum, causing the sound registered by human ears to be at a "higher pitch". Dog whistles can only be heard by dogs because the sound waves produced are at such a high frequency, human ears cannot detect them.
What is the radio frequency range?
freq range of rf is 3hz (extremely low frequency) to 300Ghz (extremely high frequency)
What extracts the intelligence from a high frequency carrier in FM receivers?
One method to extract the intelligence (signal) from a high frequency carrier in FM receivers is with a phase locked loop.
What does HF stand for in radio terms?
I believe it means "High Frequency".
What is high frequency tuned amplifier?
High frequency amplifier is a device which is tuned by high frequency. Tuned means the overlapping of generated frequency with that amplifier.
What are high frequency spark generators?
High frequency spark generators are essential mechanical devices that are used in cars to start the ignition. This device is usually powered by batteries.
What animal can hear the highest frequency sound?
While dogs can hear high frequency sounds, BATS may hold the record. They use high frequency sound for navigation.actually there are 2. dolphins and miceBeluga Whaleand bats
Is there such thing as sensors that pick up ultrasonic frequencies?
Yes there is. They're commonly known as sonar sensors. Sonar sensors are usually a coupled device which emitt and receive high frequency sound waves and can be used to detect objects within a close proximity.
Will scaredy cat device be annoying for teenagers?
No because the frequency is too high for teenagers to hear BD
What is A device that bounces laser beams off a reflector to detect fault movement is?
A device that bounces laser beams off a reflector to detect fault movements is called a Laser-ranging device
What is the pokedex in Pokemon Platinum?
It is a high tech device to record Pokemon you find or catch.
Why do we typically lose high-frequency hearing first as we age?
As we age, the tiny hair cells in our inner ear that detect high-frequency sounds can become damaged or wear out over time. This can lead to a gradual loss of high-frequency hearing, making it harder to hear sounds like birds chirping or the ringing of a phone.
What do you lose first high or low frequency hearing?
High frequency hearing is typically lost first due to exposure to loud noises and aging, as the hair cells in the inner ear that detect high frequencies are more vulnerable. Low frequency hearing tends to be more resilient and is usually lost later in the hearing loss process.
What is a device that bounces laser beams off a reflector to detect fault movements?
A device that bounces laser beams off a reflector to detect fault movements is called a Laser-ranging device
What is the purpose of carrier signal in modulation?
Carrier signal is of high frequencies, it gives strength to the original signal because original signal cannot travel long distances so it needs to be strengthen a bit for transmitting. The carrier signal is a high frequency signal, called an RF. Radio Frequency signal, it is to high for the human or animal ear to detect it, so its outside the audible spectrum and can easily be transmitted over the air to receivers that is tuned to receive that frequency and detect any modulation on that signal.
Why high frequency is not used in power semiconductor devices?
It would probably depend on the specific device. In general, managing high frequencies correctly requires a special design.
