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SiriusXM

SiriusXM is a computer science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand SiriusXM rather than just read about it. In short: Sirius XM Holdings Inc., commonly referred to as SiriusXM, is an American broadcasting corporation headquartered in Midtown Manhattan, New York City, that provides satellite radio and online radio services operating in the United States. The company was formed by the 2008 merger of Sirius Satellite Radio and XM Satellite Radio, merging them into SiriusXM Radio.

SiriusXM — main illustration
SiriusXM — illustration

Key takeaways

  • SiriusXM belongs to computer science; place it in that map before memorising details.
  • Learn the definition first, then one example that makes the definition concrete.
  • Connect SiriusXM to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of SiriusXM from memory before moving on to harder problems.

Reference excerpt

Sirius XM Holdings Inc., commonly referred to as SiriusXM, is an American broadcasting corporation headquartered in Midtown Manhattan, New York City, that provides satellite radio and online radio services operating in the United States. The company was formed by the 2008 merger of Sirius Satellite Radio and XM Satellite Radio, merging them into SiriusXM Radio. The company also has a 70% equity interest in SiriusXM Canada, an affiliate company that provides Sirius and XM service in Canada. On May 21, 2013, SiriusXM Holdings, Inc. was incorporated, and in January 2020, SiriusXM reorganized their corporate structure, which made Sirius XM Radio Inc. a direct, wholly owned subsidiary of SiriusXM Holdings, Inc. The U.S. Federal Communications Commission (FCC) approved the merger of XM Satellite Radio Holdings Inc. and Sirius Satellite Radio, Inc. on July 29, 2008, 17 months after the companies first proposed it. The merger created a company with 18.5 million subscribers, and the deal was valued at US$3.3 billion (equivalent to $4.7 billion in 2024), not including debt. The proposed merger was opposed by those who felt it would create a monopoly. Sirius and XM argued that a merger was the only way that satellite radio could survive. In September 2018, the company agreed to purchase the streaming music service Pandora, and this transaction was completed on February 1, 2019. As of July 12, 2022, SiriusXM had approximately 34 million subscribers, and claims to be the largest audio entertainment company in North America. SiriusXM Radio is a primary entry point for the Emergency Alert System.

Pre-merger

Early days of Sirius

Sirius Satellite Radio was founded by Martine Rothblatt, who served as the new company's chairman of the board. Co-founder David Margolese served as chief executive officer and Robert Briskman served as president and chief operating officer. In 1990, Rothblatt founded Satellite CD Radio in Washington, D.C. The company was the first to petition the FCC to assign unused frequencies for satellite radio broadcast, which "provoked a furor among owners of both large and small [terrestrial] radio stations". In April 1992, Rothblatt resigned as chairman and CEO to start a medical research foundation. Former NASA engineer Briskman, who designed the company's satellite technology, was then appointed chairman and CEO. Six months later, in November 1992, Rogers Wireless co-founder Margolese, who had provided financial backing for the venture, acquired control of the company and succeeded Briskman. Margolese renamed the company CD Radio, and spent the next five years lobbying the FCC to allow satellite radio to be deployed, and the following five years raising US$1.6 billion, which was used to build and launch three satellites into elliptical orbit from Kazakhstan in July 2000. In 1997, after Margolese had obtained regulatory clearance and "effectively created the industry", the FCC also awarded a license to XM Satellite Radio, which followed Sirius' example. In November 1999, marketing chief Ira Bahr convinced Margolese to again change the name of the company, this time to Sirius Satellite Radio, in order to avoid association with the soon-to-be-outdated CD technology. Having secured installation deals with automakers, including BMW, Chrysler and Ford, Sirius launched the initial phase of its service in four cities on February 14, 2002, expanding to the rest of the contiguous United States on July 1, 2002. In November 2001, Margolese stepped down as CEO, remaining as chairman until November 2003, with Sirius issuing a statement thanking him "for his great vision, leadership and dedication in creating both Sirius and the satellite radio industry". Joe Clayton, former CEO of Global Crossing, followed as CEO from November 2001 until November 2004; stayed on as chairman until July 2008. Mel Karmazin, former president of Viacom, became CEO in November 2004 and remained in that position through the merger, until December 2012.

Early days of XM

The origin of XM Satellite Radio was a Petition for Rulemaking filed at the Federal Communications Commission (FCC) by regulatory attorney and Founder of Satellite CD Radio Martine Rothblatt, to establish frequencies and licensing rules for the world's first-ever Satellite Digital Audio Radio Service (SDARS). On May 18, 1990, Satellite CD Radio, Inc. (SCDR) filed a Petition for Rule Making in which it requested spectrum to offer Compact Disc quality digital audio radio service to be delivered by satellites and complementary radio transmitters. Following the Allocation NPRM, the FCC established a December 15, 1992, cut-off date for applications proposing satellite DARS to be considered in conjunction with CD Radio's application. One such application came from American Mobile Radio Corporation (AMRC), the predecessor company to XM Satellite Radio. XM Satellite Radio was founded by Lon Levin and Gary Parsons. It has its origins in the 1988 formation of the American Mobile Satellite Corporation (AMSC), a consortium of several organizations originally dedicated to satellite broadcasting of telephone, fax, and data signals. In 1992, AMSC established a unit called the American Mobile Radio Corporation, dedicated to developing a satellite-based digital radio service; this was spun off as XM Satellite Radio Holdings, Inc. in 1998. Its planned financing was complete by July 2000, at which point XM had raised US$1.26 billion (equivalent to $2.2 billion in 2024) and secured installation agreements with General Motors, Honda, and Toyota. Initially scheduled for September 12, 2001, XM's service start date was postponed due to the September 11, 2001, terrorist attacks on the World Trade Center and The Pentagon. XM Satellite Radio's first broadcast was on September 25, 2001, nearly four months before Sirius. Gary Parsons served as chairman of XM Satellite Radio from its inception through the merger, and resigned from the position in November 2009. Hugh Panero served as XM's CEO from 1998 until July 2007, shortly after the merger with Sirius was proposed. Nate Davis was appointed interim CEO until the merger was completed, at which point Sirius CEO Mel Karmazin took over as CEO of the newly merged company, SiriusXM.

Merger

… excerpt ends here. Continue reading the full article.

Illustrations

SiriusXM: Jill Biden at the SiriusXM studio at Rockefeller Plaza participating in a round table about mental health care in 2016
Jill Biden at the SiriusXM studio at Rockefeller Plaza participating in a round table about mental health care in 2016
SiriusXM illustration
SiriusXM illustration
SiriusXM illustration
SiriusXM illustration

Worked examples

Example 1 — a first encounter with SiriusXM

Start with the simplest possible case. Write down what SiriusXM claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In computer science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to SiriusXM before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about SiriusXM ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of SiriusXM

In research
SiriusXM appears in computer science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry
Engineering practice reuses SiriusXM in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom
SiriusXM is common in secondary-school and first-year university syllabi. It links to neighbouring topics 2008 establishments in New York City, American companies established in 2008, Communications satellite operators, so understanding it makes those chapters shorter.
In everyday life
Look for SiriusXM outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study SiriusXM in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what SiriusXM means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain SiriusXM out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is SiriusXM in simple terms?

Sirius XM Holdings Inc., commonly referred to as SiriusXM, is an American broadcasting corporation headquartered in Midtown Manhattan, New York City, that provides satellite radio and online radio services operating in the United States. The company was formed by the 2008 merger of Sirius Satellite…

Why does SiriusXM matter?

Because it connects several computer science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study SiriusXM?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on SiriusXM.

Tags

  • 2008 establishments in New York City
  • American companies established in 2008
  • Communications satellite operators
  • Companies in the S&P 400
  • Companies listed on the Nasdaq
  • Liberty Media subsidiaries
  • Mass media companies based in New York City
  • Mass media companies established in 2008
  • Podcasting companies
  • Publicly traded companies based in New York City
  • Radio broadcasting companies of the United States
  • Radio networks in the United States

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