For Immediate Release - April 6, 1998

SUNNYVALE, CALIFORNIA-CALIFORNIA MICROWAVE, INC. (Nasdaq National Market: CMIC) announced today that its Microwave Radio Communications (MRC) division will be demonstrating at the National Association of Broadcaster's Convention the industry's broadest range of microwave products for digital video transmission. MRC will be presenting several live demonstrations of these products in booth #8324 at the Las Vegas Convention Center, April 6-9, 1998. In preparing these product and technology demonstrations, MRC has worked in partnership with many leading providers of digital video products, including the EF Data division of California Microwave. WHD-TV, PBS, WRAL-HD Supporting HDTV Demonstration Highlights at the MRC booth include the display of NTSC and HDTV television signals that are being transported on a 7-GHz MRC DAR45 digital video microwave system between the Model Station, WHD-TV, in Washington, DC, and the Public Broadcasting System (PBS) headquarters in Alexandria, Virginia. At PBS, the two-channel digital video circuit also is routed to the PBS satellite uplink facilities in Alexandria and is being downlinked at the Las Vegas Convention Center. This demonstration includes active support from WHD-TV, PBS, and WRAL-HD, plus equipment suppliers EF Data, General Instrument Corporation and World Access, Inc. MRC Radios Carrying DiviCom and Comark Programming In another active demonstration, two channels of standard definition digital video programming using video codecs from DiviCom are being transported on a 2-GHz DAR45 link via cabling between the MRC booth and the Comark Digital Services booth, also in the Las Vegas Convention Center. MRC also has a live 13-GHz link to carry programming from the DiviCom booth in the Sands Convention Center and a Comark digital television transmitter placed at KXLV in Las Vegas. Sony, Lucent, Tiernan Equipment in MRC Demonstrations The DAR45 is also being used as a 2-GHz transmission link to carry two channels of SDDI programming using Sony video equipment and Lucent Linkrunner DS-3 formatting equipment. The transmissions originate at the Sony demonstration center in Bally's Resort and are received by a DAR45 receiver at the MRC booth in the Las Vegas Convention Center. In support of the industry's growing interest in digital electronic newsgathering, MRC is also presenting its digital ENG capabilities in a technology demonstration that includes MPEG-2 compression equipment from Tiernan Corporation. MRC Introducing New Products In addition to presenting the capabilities of the DAR45 fixed radio, MRC is introducing new products to support the industry's transition to digital television. The QM2 digital modem family provides a solution for transporting the 19.39 Mbps DTV transport signal over a single channel DAR radio. The new DMR18 offers a robust 18-GHz radio platform for digital video transport at rates of 34 or 45 Mbps. California Microwave's Digital Video Initiative At this year's National Association of Broadcaster's Convention in Las Vegas, April 6-9, MRC and California Microwave's EF Data division will introduce an enlarged initiative: "Digital Video Transport Solutions." From news gathering systems and program contribution links to distribution links, MRC and EF Data will demonstrate the television industry's broadest range of satellite and terrestrial microwave systems for digital video applications. While many of the equipment elements in the total DTV production and transmission chain are still being developed, MRC and EF Data are delivering proven products for digital video transport applications. The Microwave Radio Communications division of California Microwave, Inc. is the leading US provider of analog and digital microwave systems for video transport applications. The EF Data division is a pioneer in advanced satellite modem techniques, resulting in the higher data rates and higher link availability required for digital video applications. California Microwave, Inc. (http://www.calmike.com) is a leading U.S. supplier of satellite earth station and microwave radio infrastructure products and information and collection systems. For more information, contact:

Stephanie M. Day Vice President Corporate Communications (408) 743-3429 sday@califmicro.com

Investor Information Line: (Toll-free) 1-888-225-6789 http://www.calmike.com.

Deborah Passik William Dunk Partners, Inc. (919) 929-4100

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