How FM Radio Really Works

FM radio is a broadcasting technology which has had widespread popularity and is widely used in all the regions of the world. Obviously, there are changes in frequency modulation in different areas but the core principle of its operation remains the same everywhere. However, it is quite disappointing to observe that despite constant changes in the sophistication of various technologies, like moving from analog to digital broadcasting for television channels and other services; radio has been highly neglected. The question that arises is why has it not experienced more sophistication in its technology like other broadcasting services?

The answer to this question can be obtained by considering why did the television technology switch from analog to digital broadcasting? There are two basic reasons; firstly, analog television used 6-8 MHz bandwidth to broadcast one program, whereas the digital television uses the same bandwidth to broadcast a package of television channels and services. Obviously this means that digital broadcasting is making a more efficient use of radio spectrum. Secondly, both the services use radio spectra to broadcast; therefore it was a step by step transfer of technology from analog to digital broadcasting, which took years to happen. Same is the case with radio, it might happen, but it will require years and large scale technological preparations.

There are many digital sound broadcasting technologies present that can provide good sound output with good reception like T-DAB, DRM+, DVB-T, DRM and DVB-T2; but none of these is satisfactory enough so as to replace the analog radio broadcasting. It is important to thoroughly take into account various technological aspects before switching from one technology to another. Factors like the new technology’s ability to provide good quality sound output, ability to receive signals and most importantly, its capacity to make efficient use of radio spectrum by broadcasting more radio channels.

For FM radio operations, 250 kHz of bandwidth and 100 to 200 kHz of spacing is required. This combination of bandwidth and spacing varies from region to region. It is because of this change, the technology switch from analog to digital, will be difficult to make. Hence, for a couple of years in future too, we will get entertained by analog radio broadcast!

Concluding, it is significant to mention that technological advancements are always welcome by all, anywhere in the world, because, it adds to the comfort in our lives and also becomes a source of pride for the inventing company. However, the hard fact, which cannot be ignored is the high investment made in technological advancements, in the shape of consistent and dedicated efforts, large amount of financial investments and opportunity cost of investing time, which otherwise could have been invested in some other invention. Hence, before setting out to bring about advancements in any existing technology, it is important have a reality check which will enable you to see if the advancements will provide the real desired output. Same is the case in deciding for upgrading radio analog technology to digital. The advancement should make the operations easier and not difficult!

Author Bio: The author is an experienced writer for consumer electronic product reviews and shares the Radioblende site. Where you can find out more about consumer electronics like Auto and fascia plate and what it can do for you.

Category: Computers and Technology
Keywords: FM radio,analog technique,digital,Broadcasting,powernetshop.at

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