EXHIBIT 99.3

                                                               Investor contact:
                                                                     Ed Lockwood
                                                                     Symmetricom
                                                                  (408) 428-7845
                                                       elockwood@symmetricom.com


                   SYMMETRICOM ANNOUNCES AGREEMENT TO SELL
             LINFINITY MICROELECTRONICS TO MICROSEMI CORPORATION
                                        
SAN JOSE, California -- February 11, 1999 -- Symmetricom (NASDAQ: SYMM)
announced today that it has signed a definitive agreement to sell its Linfinity
Microelectronics Inc. Subsidiary to Microsemi Corporation (NASDAQ: MSCC). The
transaction is expected to close by the end of the current quarter.

Under the agreement, Microsemi will purchase all of the outstanding equity in
Linfinity Microelectronics for approximately $24.1 million in cash, of which
approximately $1.1 million is subject to an escrow agreement. Symmetricom also
stated it expects to report a net after-tax loss related to the transaction of
up to $4.0 million, or $0.26 cents per basic share.

This transaction, which concludes Symmetricom's previously announced efforts to
secure a strategic partnership for Linfinity Microelectronics, enables the
company to focus on its network synchronization, timing and location business.

Symmetricom (NASDAQ: SYMM) provides advanced network synchronization products
that play a critical role in the operation and quality of service of
sophisticated telecommunications networks. Symmetricom's synchronization and
timing equipment is installed in telecommunications offices in over 50 countries
worldwide. Global customers include network operators and network service
providers. The Company is developing products based on its proprietary Global
Positioning System (GPS), BesTime(TM) intelligent clock, and PowerHelix(TM)
antenna technologies to address synchronization, timing and location needs of
global communications markets.

This press release contains forward-looking information within the meaning of
Section 27A of the Securities Act of 1933, as amended, and Section 21E of the
Securities Exchange Act of 1934, as amended, and is subject to the safe harbor
created by those sections. The Company's actual results could differ materially
from those projected in the forward-looking information. Some factors which
could cause future actual results to differ materially from the Company's
projected results in the forward-looking information include whether the
acquisition will be consummated as anticipated, and the risk factors listed from
time to time in the company's reports, on file with the Securities and Exchange
Commission, including but not limited to, the report on Form 10-K for the year
ended June 30, 1998, and the report on Form 10-Q for the quarter ended December
31, 1998.