Harmonic Announces Second Quarter Reporting Date

SUNNYVALE, Calif.--(Business Wire)--
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.

Harmonic Inc.
Robin N. Dickson, +1-408-542-2500
Chief Financial Officer
or
StreetConnect
Michael Newman, +1-408-542-2760
Investor Relations

Copyright Business Wire 2009