0
What else can I help you with?
Why is amplitude of demodulated FM signal much less than modulated signal?
because demodulated FM is an audio signal, which the frequency is much smaller that is why it can be transmitted alone. It need carrier which has large frequency. Modulated signal is an audio signal + carrier that is why the amplitude is higher.
What is the difference between am raido and FM radio?
A: AM radio is an Amplitude Modulation transmission . Meaning it has fix frequency but it is modulated by the signal. FM Frequency Modulation the frequency is modulated by the signal
What does the number of a FM radio station mean?
The numbers in an FM radio station represent the frequency the station transmits the signal on. The frequency range for FM band radio stations is from 87.5 MHz to 108.0 MHz. These radio frequencies are considered VHF or Very High Frequency. The difference between AM and FM radio is that in AM radio the Amplitude is Modulated, or changed to send the signal, whereas with FM, the Frequency is Modulated or altered to send the signal.
How big is an FM?
An FM, or frequency modulation signal, can vary in size depending on its bandwidth, which is influenced by factors such as the audio signal's frequency content and the modulation index. Typically, FM signals can occupy a bandwidth of about 200 kHz for standard FM radio broadcasting. However, in digital communications, the size can differ significantly based on the specific application and encoding techniques used. Overall, the "size" of an FM signal is not fixed and depends on various parameters.
Why FM is more clearer than am?
The abbreviations FM and AM stands for amplitude modulation and frequency modulation. The reason why FM is more clearer than AM is because FM has a better signal-to-noise ratio than AM does.
How do you block an FM signal?
if someone is playing there radio veryloudly, and have been asked repeatedly to turn it down, but refuse. is there any way to block the received radio signal.
Where is the FM antenna?
You need to be more specific. Where is the FM antenna on what? The FM antenna at a radio staion could be on a mountain. FM is called line of site transmission. Meaning, it shoots a beam , or wave, in a staight line to your antenna on your car or house. So, FM can be heard even if you are going through a tunnel, provided there are no mountains to block the signal. It is also called Frequency Modulation. AM is Amplitude Modulation. It is bounced up and down between the atmospere and the ground, until it hits your antenna. So, AM can even be heard if mountains block your signal. It simply bounces over and on top of them to your antenna. Where is your car?
How do you detect FM signal?
FM signals can be detected using a frequency discriminator or a phase-locked loop (PLL) demodulator. The frequency discriminator converts the frequency variations of the FM signal into amplitude variations, which can then be amplified and filtered to recover the original audio signal. In a PLL, the incoming FM signal is compared to a locally generated signal, allowing for the extraction of the original information by tracking the phase differences. Both methods enable effective retrieval of the modulating audio or data signal from the FM carrier.
Differentiate FM signal from AM signal?
FM = Frequency Modulation; AM = Amplitude Modulation; each being a technique by which the speech signal is imprinted onto the carrier signal (the one to which you tune the radio). FM is a higher frequency than AM. FM also only uses the 2.7hz upper side band of the frequency while AM utilizes the entire 6hz both the LSB, USB and the .6hz carrier wave. That allows AM to travel farther than a FM signal.
Why you convert FM signal to IF frequency?
Mix it with a local oscillator whose frequency is (the IF frequency) away from the frequency of the FM signal you're interested in.
How is FM transmitted?
the digital signal is converted to analog signal after using by transmitted antenna
Why are FM tones used in ASSR?
boz there is lesas interferance to the signal as a signal travels...............
Why is amplitude of demodulated FM signal much less than modulated signal?
because demodulated FM is an audio signal, which the frequency is much smaller that is why it can be transmitted alone. It need carrier which has large frequency. Modulated signal is an audio signal + carrier that is why the amplitude is higher.
How can I block an IR signal effectively?
To block an infrared (IR) signal effectively, you can use materials that are opaque to IR radiation, such as certain types of plastics, glass, or metal. Creating a physical barrier between the IR source and receiver can help block the signal. Additionally, using specialized IR-blocking films or coatings can also be effective in preventing IR transmission.
Why FM is good than am in communication?
The FM signal is more amune to static in the atmosphere than AM signals.
What determines the amount of deviation of an fm signal?
FM or frequency modulation is a means to vary the frequency withing a set basic frequency and transmit it. FM radio demodulate the frequency extracting the signal that made the frequency shift at the source.
What is the need for limiter in FM receiver?
The limiter clips the top and bottom of the FM signal to remove any AM signal or static that was picked up. This prevents the FM discriminator from seeing those unwanted signals and inadvertently converting them to audio, scrambling the intended audio signal. Simply put, the limiter blocks interference and static making FM reception very clean.
