Press Release

Harmonic Announces Audio Webcast Presentation at Investor Conferences on November 18 and 19

November 17, 2008
SUNNYVALE, Calif., Nov 17, 2008 (BUSINESS WIRE) -- Harmonic Inc. (Nasdaq: HLIT) today announced that Robin Dickson, Chief Financial Officer, will make a presentation at the following investment conferences:
-- Stephens Inc. Fall Investment Conference
Tuesday, November 18, 2008 at 3:00 P.M. (Eastern)
-- UBS 2008 Global Technology and Services Conference
Wednesday, November 19, 2008 at 2:15 P.M. (Eastern)

The live audio webcasts of Harmonic's presentation will be available from Harmonic's website, www.harmonicinc.com, under the Investor Relations Events section. The replays will be available after 6:00 P.M. (Eastern) on the date of the presentation at the same Web address.

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 utilize Harmonic's digital video, broadband optical access and software solutions to offer consumers a compelling and personalized viewing experience.

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.

SOURCE: Harmonic Inc.

Harmonic Inc. 
Chief Financial Officer 
Robin N. Dickson, 408-542-2500 
or 
StreetConnect 
Investor Relations 
Michael Newman, 408-542-2760