Table of Contents
Why is FM radio more popular than AM?
In the U.S., channel spacing in the AM broadcast band is every 10khz (20x denser). If the AM band used the same spacing as FM radio, there would only be seven or so channels available in the AM band. The reason that FM radio sounds so much better is that the extra space effectively allows them to send more data.
Why do standard broadcasting use AM rather than FM?
AM transmissions are much more susceptible to interference than FM or digital signals, and often have lower audio fidelity. Thus, AM broadcasters tend to specialise in spoken-word formats, such as talk radio, all news and sports, with music formats primarily for FM and digital stations.
What is the primary purpose of narrowband FM?
Narrowband FM is used for voice communications in commercial and amateur radio settings. In broadcast services, where audio fidelity is important, wideband FM is generally used. In two-way radio, narrowband FM (NBFM) is used to conserve bandwidth for land mobile, marine mobile and other radio services.
When did FM become more popular than AM?
Radios started to have an FM band included with the AM band in the late 1950s and 1960s. By the 1970s, FM audience size surpassed that of AM, and the gap has been growing ever since.
What are the differences between narrowband and wideband FM?
– Narrowband refers to radio communications that carry signals in a narrow band of frequencies. Wideband, on the other hand, refers to a broader frequency communication channel that uses a relatively wide range of frequencies.
Is WIFI a narrowband?
Examples of wideband communication are wireless networks: Wifi, LTE, HSPA Narrowband communication. Narrowband communication uses a narrow bandwidth. Narrowband signals usually have a far greater range of reception as narrower filters can be used and therefore cancel out unwanted wideband noise.
What is the main disadvantage of FM?
Disadvantages of FM: Much more Bandwidth (as much as 20 times as much). More complicated receiver and transmitter.
When did FM become popular?
The popularity of FM radio grew in the 1950s and 1960s, as the FCC opened up more channels to broadcasters and FM sets became cheaper and more readily available. Car companies introduced FM car radios in 1963.