Introduction to Satellite Digital Audio Radio Service (SDARS)

Satellite Digital Audio Radio Service (SDARS):

SDAR is a satellite-based direct broadcast radio service in which

Digitally encoded audio entertainment material is streamed to

Terrestrial receivers, either directly from an orbiting satellite or from the satellite to

the receiver via a relay station (this is a special case where the receiver

shielded location). SDARS is a radiocommunication service through which the audio

programming is transmitted digitally by one or more space stations directly to

fixed, mobile and / or portable stations, and that may involve complementary

terrestrial repeater transmitters, telemetry, monitoring and control facilities.

Through SDARS, CD-quality audio is available due to digital broadcasting.

is employed.

History of satellite radio:

Satellite radio is an idea for more than a decade. In 1992, the USA.

The Federal Communications Commission (FCC) assigned a spectrum in the

Band “S” (2.3 GHz) for satellite broadcasting nationwide

Digital Audio Radio Service (DARS). Only four companies requested a

license to broadcast on that band. The FCC granted licenses

two of these companies in 1997. CD Radio (now Sirius Satellite Radio) and

American Mobile Radio (now XM Satellite Radio) paid more than $ 80 million each

use the space in the S-band for digital satellite transmission. The first satellite radio launched by XM on September 25, 2001, followed by Sirius on July 1, 2002.

Right now, there are three space-based radio stations:

Sirius satellite radio

XM Satellite Radio

WorldSpace Satellite Radio

Importance and meaning of satellite radio:

We all have our favorite radio stations that we preset in our car.

radios, switching between them while driving to and from work, on errands

and around the city. But when he travels too far from the source station, the

the signal is interrupted and becomes static. Most radio signals can only travel about 30

or 40 miles from its source. On long trips that meet you on the way

different cities, you may have to change radio stations every hour or so as the signals fade into

and out. Now imagine a radio station that can broadcast its signal from over 22,000 miles (35,000 km) away and then broadcast over your car radio with utter clarity. One could drive

Almost hundreds of kilometers without having to change radio stations! No

only you would never hear static interfering with your favorite tunes, but also

the music would be interrupted by little or no commercials.

Satellite radio companies are comparing

the importance of your service to the impact that cable television had on

television 30 years ago. Listeners will not be able to pick up local stations using

satellite radio services, but they will have access to hundreds of stations offering a

variety of musical genres. Each company has a different plan for its transmission.

system, but the systems share similarities.

XM Satellite Radio, Sirius Satellite

WorldSpace radio and satellite individually provide digital audio

radio services (SDARS), with commercial-free programming, digital audio quality and

nationwide coverage. Each company offers nearly 100 channels of digital music and

talk radio (many of them commercial-free or with a reduced number of commercials)

that can be received from coast to coast without service interruption. Each

Offering multiple music channels, these services clearly offer programming options

not available through traditional radio.

One of the main features of SDARS is that SDARS provides almost free programs (or commercial ones are restricted). And it also provides news, weather forecasts and sports, in addition to

Entertainment-based programs The primary application of this service is constant coast-to-coast coverage of car radio. We have all experienced the problem of trying to listen to the radio on a long journey. Both AM and FM stations fade out as we go in and out of their coverage

zone. Portable full satellite radio service available today for

the car, home stereo, and personal radio environments. Automakers have been installing satellite radio receivers in some models for a few years now, and

Various models of portable satellite radio receivers are available in a variety of

electronics companies.

Signal reception is generally poor and variable in the cases of AM or FM. With SDARS systems, radio coverage in the 48 continental states is strong and continuous. different to

For AM and FM channels, SDARS signals are available in a single format

Subscription-based radio service:

Because the technology requires access to a commercial satellite to

signal propagation; Satellite radio services are commercial businesses

entities (not private), who offer a package of channels as part of their service

– require a subscription from end users to access their channels. satelite

Radio service can be subscribed at a monthly fee of $ 12.95 USD and more

It is very worth it for the service it provides.

Future of satellite radio:

SDARS appears to have good market growth due to the following factors. Growing

XM and Sirius’ partnerships with OEMs and distribution points made the

Most popular SDARS. Introduction of more convenient, smaller and more hardware

portable car radios and home stereo,

computing and office and personal environments made possible in the

Same time.

Home and personal use Promotional advertising for industry and

awareness campaigns given the most popular SDARS. Sirius and XM now

they also offer subscribers the option to listen to their programming

online. Apart from all of this,

Hardware price drop making it more affordable after purchase from the market.

The author can be contacted via [email protected] for more

information about SDARS.