The purpose of comparing AM (Amplitude Modulation) and FM (Frequency Modulation) radio is to provide a comprehensive understanding of the two primary radio broadcasting technologies. Overall, the comparison of AM vs. FM radio serves as a valuable reference for anyone interested in the world of radio broadcasting, whether for personal enjoyment, academic study, or professional purposes.
Definition of AM and FM radio
- AM (Amplitude Modulation) and FM (Frequency Modulation) are two primary modulation techniques used in radio broadcasting.
- In AM radio, information is encoded by varying the amplitude (strength) of the carrier wave.
- FM radio, on the other hand, encodes information by varying the frequency (pitch) of the carrier wave.
Technical Differences in AM vs FM Radio
Modulation Technique
AM Radio: AM radio uses amplitude modulation to encode information onto the carrier wave. In this technique, the strength or amplitude of the carrier signal/wave is varied to represent the audio signal. The varying amplitude corresponds to the audio waveform, which is then demodulated at the receiver to retrieve the original sound. AM modulation is relatively straightforward and
When it comes to radio communication, two primary modulation techniques dominate the airwaves: Frequency Modulation (FM) and Amplitude Modulation (AM). Each has its unique characteristics, advantages, and best-use scenarios. Understanding the intricate differences between FM and AM radio is crucial for anyone interested in broadcasting, technology, or simply enjoying their favorite tunes. This article dives deep into the world of radio waves, providing insights into the mechanics, advantages, limitations, and applications of FM and AM stations.
What is AM Radio?
Amplitude Modulation (AM) is one of the earliest forms of radio transmission, developed in the early 20th century. It works by varying the amplitude (strength) of the carrier wave to encode information, typically sound. The frequency remains constant, while the strength of the wave changes.
The Mechanics of AM Transmission
In AM broadcasting, sound waves are converted into electronic signals. This signal is then superimposed onto a carrier wave, altering its amplitude. When it reaches the receiver, the original sound can be extracted and amplified.
Key Characteristics of AM Radio
- Signal Range: AM signals can tra
AM vs. FM
History
AM method of audio transmission was first successfully carried out in the mid s to produce quality radio over telephone lines and the original method used for audio radio transmissions. FM radio was developed in the United states mainly by Edwin Armstrong in the s.
Differences in Spectrum Range
AM radio ranges from to kilohertz, whereas FM radio ranges in a higher spectrum from 88 to megahertz. For AM radio, stations are possible every 10 kHz and FM stations are possible every kHz.
Pros and Cons of AM vs. FM
The advantages of AM radio are that it is relatively easy to detect with simple equipment, even if the signal is not very strong. The other advantage is that it has a narrower bandwidth than FM, and wider coverage compared with FM radio. The major disadvantage of AM is that the signal is affected by electrical storms and other radio frequency interference. Also, although the radio transmitters can transmit sound waves of frequency up to 15 kHz, most receivers are able to reproduce frequencies only up to 5kHz or less. Wideband FM was invented to specifically overcome the interference disadvantage of AM radio.
A distinct advantage that FM has over A
AM y FM (radio)
AM y FM, en el mundo de la radiodifusión, son las siglas que se refieren a las dos formas de modular la ondaen la transmisión de señales de radio.
AM corresponde a las siglas de "amplitud modulada".
Por su parte, FM significa ‘frecuencia modulada".
AM o amplitud modulada
AM significa exactamente amplitud modulada o modulación de amplitud y se trata de una técnica utilizada en la comunicación electrónica-magnética, que consiste en hacer variar la amplitud de la onda portadora de la radiofrecuencia.
Fue la primera técnica que se usó para hacer radio y se la conoce también con onda corta.
Por lo tanto, cuando alguien menciona que está en "onda corta", puede referirse a la escucha de emisoras de radio que transmiten en estas frecuencias de banda.
El canal de la AM tiene un ancho de banda que se encuentra entre 10 KHz y 8 KHz. Debido a que son frecuencias más bajas, cuyas longitudes de onda son mayores, el alcance de su señal es considerablemente más amplio en relación con el de la frecuencia modulada.
Las ondas AM pueden medir entre metros ( KHz) y metros ( KHz). Este es el tipo de onda que llega a la ionosfera y rebota en ella.
Este tipo de onda pue
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