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What should the beat frequency of two in-tune instruments be?
The beat frequency of two in-tune musical instruments is zero.
Why antenna height is at least quarter wavelength for radiating from it?
A transmitter antenna is a tuned circuit and it can be very complex and it even get more difficult at higher frequencies, if it's not a 1/4 wave length of the transmitter frequency it is un tuned and you will have some of your RF power radiated back to the transmitter, that is called SWR, for Standing Wave Ratio and it will damp the RF that is radiated from the antenna and if the SWR is to high it can damage the transmitters final stage. It don't have to be the real physical 1/4 or 1/2 wave and it can even be 5/8 of the wavelength but then a L/C circuit have to be inserted at the input side of the antenna to tune the antenna to the correct frequency one antenna can even be used for two different frequencies, then a L/C tuning circuit have to inserted at a 1/4 wave length of the higher frequency , this type of antenna is used in duplex systems, like a cell phone.
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.
Advantages of intermediate frequency?
The intermediate frequency, or IF, in a superhetrodyne receiver is used to tune the desired signal. The IF stage is tuned to a specific, fixed frequency, usually 455 kHz for AM and 10.7 MHz for FM. Since the IF stage does not need to be adjustable, it can be designed for high performance, tight bandpass operation. This is far easier to do than creating an adjustable RF stage with tight bandpass operation. Instead, the RF stage is broadband and the IF stage is narrow band. The actual tuning of the receiver is done by varying the local oscillator that is mixed with the radio frequency (RF) signal just upstream of the IF stage. The difference frequency of the output of the mixer is then amplified by the IF stage. The audio information, to be fed to an amplifier and be heard on the speaker, is extracted after the last IF stage - either by a detector in AM or discriminator in FM.
What happens to the current Amps flowing in a circuit when you raise or lower the frequency Hertz?
This question is not asking about household power circuits which typically have an almost constant frequency of 50 Hz or 60 Hz. If a circuit includes inductance and capacitance then the answer below, marked by *** is incorrect. That answer is correct for purely resistive loads only.An electric motor has inductance as well as resistance. The circuit inside a typical fluorescent light fixture contains a ballast - which has resistance and inductance - and a tube, which has capacitance, inductance and resistance. The currents flowing in the motor and the fluorescent light fixture would vary considerably if the frequency of the applied alternating voltage was allowed to alter.Two other common examples:i) a Hi-Fi or similar audio amplifier, driving a loudspeaker: the speaker has a coil in it which has inductance. The current (and hence the output power) of the speaker varies considerably with the audio frequency, typically between 20 Hz and 20,000 Hz (20 kiloHertz). For that reason different sized speakers - such as tweeters, mid-range, woofers and sub-woofers - each having different sizes of inductance and capacitance, are commonly used to produce the best "total overall sound output" from an amplifier.ii) a tuning circuit for a radio: this must use both an inductance coil and a tuning capacitor. The current flowing in those components varies enormously between "out-of-tune" and "in-tune" settings of the tuning capacitor which makes the circuit tune "in" and "out" of radio frequencies in a specific range which the tuning circuit was designed to handle. Radio frequencies range between 50 kiloHertz and hundreds of GigaHertz or more. Changing the power source from AC to DC may have an effect on the current drawn but is dependent on the nature of the load. Any device is designed for AC or DC operation but rarely both. *** Note: the following answer is incorrect except for purely resistive loads. ***The frequency of an AC voltage line has no effect on the current drawn for any given power. Voltage does have an effect on the current.
What is the frequency of a grasshopper?
They have a low frequency. Grasshoppers can also alter their sound to stay in tune to specific noises they come in contact with.
How often should I give my Vespa scooter a tune up?
Refer to the owners manual for the recommended frequency of service and tune-ups. Tune-ups are usually scheduled at specific intervals based on mileage.
How does the fm transmitter for an ipod work?
You plug the device into your iPod, and it will then transmit your music on a certain radio frequency. You can then tune a radio into this specific frequency, and you will be able to listen to your music.
What would you be using if you were trying to tune into an AM or FM frequency?
You would be using a radio if you were trying to tune into an AM or FM frequency.
What should the beat frequency of two in-tune instruments be?
The beat frequency of two in-tune musical instruments is zero.
Why antenna height is at least quarter wavelength for radiating from it?
A transmitter antenna is a tuned circuit and it can be very complex and it even get more difficult at higher frequencies, if it's not a 1/4 wave length of the transmitter frequency it is un tuned and you will have some of your RF power radiated back to the transmitter, that is called SWR, for Standing Wave Ratio and it will damp the RF that is radiated from the antenna and if the SWR is to high it can damage the transmitters final stage. It don't have to be the real physical 1/4 or 1/2 wave and it can even be 5/8 of the wavelength but then a L/C circuit have to be inserted at the input side of the antenna to tune the antenna to the correct frequency one antenna can even be used for two different frequencies, then a L/C tuning circuit have to inserted at a 1/4 wave length of the higher frequency , this type of antenna is used in duplex systems, like a cell phone.
How to make a home yagi antenna to receive FM signals?
To cut a wire or aluminium tubing length for a dipole antenna take your frequency in Megahertz that you want to tune the antenna to and divide that number by 468. This will be the full wave length of the frequency you will be tuning to. For general purpose listening cut the antenna to mid frequency of the FM band. Cut this wire (or tubing) into two equal pieces. This will be the driven element feed point. For a yagi antenna cut a reflector 10% larger that the first cut and place it 1/2 wavelength behind the driven element on the boom. For the director cut the wire length (or tubing) 10% smaller that the driven element and place it on the boom 1/2 wavelength in front of the driven element. This will give you a three element yagi antenna.
What CD does the REM tune of What is the Frequency Kennith appear?
The tune of What's the Frequency Kennith appears on REM's Monster cd. The song was written by Bill Berry.
How do you tune the swr on a B-100 Saturn base cb antenna?
you dont
How do you tune a Antron 99 Base Station Antenna?
it's allready pretuned
What would you be using if you were trying to tune into AM or FM frequency?
A radio?
What would you be using if you trying to tune AM or PM frequency?
The Band
