Harmonic Announces Second Quarter Reporting Date

Harmonic Inc. (Nasdaq: HLIT) today announced that it plans to report its second quarter results after market close on July 30, 2009.

Harmonic will host a conference call to discuss its financial results at 2:00 P.M. Pacific (5:00 P.M. Eastern) on July 30, 2009. A listen-only broadcast of the conference call can be accessed on the Company’s website at www.harmonicinc.com or by calling +1.706.634.9047 (conference identification code 18003910). The replay will be available after 6:00 P.M. Pacific at the same website address or by calling +1.706.645.9291 (conference identification code 18003910).

Harmonic intends to discuss financial and other statistical information on this conference call. This information will also be available on the Company’s website at www.harmonicinc.com either in the press release related to the above broadcast, by accessing the listen-only broadcast described above or by accessing the replay of the broadcast described above.

About Harmonic Inc.

Harmonic Inc. is a leading provider of versatile and high performance video solutions that enable service providers to efficiently deliver the next generation of broadcast and on-demand services including high definition, video-on-demand, network personal video recording and time-shifted TV. Cable, satellite, broadcast and telecom service providers can increase revenues and lower operational expenditures by using Harmonic’s digital video, broadband optical access and software solutions to offer consumers the compelling and personalized viewing experience that is driving the business models of the future.

Harmonic (NASDAQ: HLIT) is headquartered in Sunnyvale, California with R&D, sales and system integration centers worldwide. The Company’s customers, including many of the world’s largest communications providers, deliver services in virtually every country. Visit www.harmonicinc.com for more information.