What is satellite radio or Satellite Digital Audio Radio Service (SDARS)? - Definition from WhatIs.com

Definition

satellite radio or Satellite Digital Audio Radio Service (SDARS)

Part of the Electronics glossary:

Satellite radio, more formally known as Satellite Digital Audio Radio Service (SDARS), is a broadcasting network in which digital high-fidelity (hi-fi) audio entertainment is transmitted from orbiting satellite s to receivers on the surface. Signals can be received either directly from a satellite or indirectly by means of earth-based repeater s. Programming can also be received through Internet connections.

The first SDARS satellite was launched in the autumn of 2001 by the company now known as XM Satellite Radio. The second satellite was launched during the summer of 2002 by the company now called Sirius. These satellites transmit radio frequency (RF) signals at approximately 2.3 gigahertz (GHz). Satellite radio provides programming on a subscription basis. Users pay a nominal monthly fee for the service and in turn receive programming that contains almost no advertising. The programming consists mainly of music but also includes news, weather, sports and traffic information. The services are used primarily by motorists although receivers can be installed in residences and businesses. Portable receivers also exist.

This was last updated in March 2011
Posted by: Margaret Rouse

Related Terms

Definitions

  • frequency-hopping spread spectrum

    - Frequency hopping is one of two basic modulation techniques used in spread spectrum signal transmission. (SearchNetworking.com)

  • robot

    - A robot is a machine designed to execute one or more tasks automatically with speed and precision. There are as many different types of robots as there are tasks for them to perform. (WhatIs.com)

  • matter

    - Matter is a substance that has inertia and occupies physical space. (WhatIs.com)

Glossaries

  • Electronics

    - Terms related to electronics, including definitions about electrical components and words and phrases about computers, laptops parts, digital cameras, televisions and home appliances.

  • Internet applications

    - This WhatIs.com glossary contains terms related to Internet applications, including definitions about Software as a Service (SaaS) delivery models and words and phrases about web sites, e-commerce ...

Ask a Question. Find an Answer.Powered by ITKnowledgeExchange.com

Ask An IT Question

Get answers from your peers on your most technical challenges

Ask Question

Tech TalkComment

Share
Comments

    Results

    Contribute to the conversation

    All fields are required. Comments will appear at the bottom of the article.