California Microwave's MRC And EFData Units Continue Their Digital Video Momentum At NAB `99.

SUNNYVALE, Calif.--(BUSINESS WIRE)--April 1, 1999--

MRC's new TwinStream(TM) and CodeRunner(TM) Radios Provide

Dramatic Transport Solutions at the National Association of

Broadcasters Convention in Las Vegas, April 19-22, 1999

California Microwave, Inc. (Nasdaq National Market: CMIC) announced today an upcoming series of live product demonstrations that confirm the company's dedication to providing market-leading digital video transport solutions for television broadcasters. California Microwave will highlight the industry's broadest range of digital video microwave and satellite solutions at the Las Vegas Convention Center, Booth No. L21142, during the National Association of Broadcasters Convention, April 19-22, 1999.

Industry-Leading, Evolutionary Concept

At the NAB Convention in April 1998, the company's Microwave Radio Communications (MRC) and EFData business areas announced a major business initiative to support the global television broadcast industry with its digital video transition. Since then, MRC and EFData have been at the center of the US digital television transition, with EFData providing its SDM-2020 modems for two major networks in their national DTV program distribution roll-outs. The MRC unit provided 90% of the microwave studio-to-transmitter links for the November 1998 sign-ons, including the company's unique TwinStream(TM) radio for frequency-restricted market applications. With an ongoing program of new product introductions for digital video, EFData and MRC continue to lead the industry with digital video transport solutions throughout the world.

MRC and EFData Products Throughout the NAB Convention Halls

Attendees at the 1999 NAB Convention will see MRC and EFData products displayed at the California Microwave booth in the South Hall 4, as well as in booths of business partners throughout the Las Vegas and Sands Convention Centers. MRC's TwinStream product line will provide STLs for two pioneering DTV broadcasters in Las Vegas, as well as support of a dramatic demonstration of the new CodeRunner(TM) product family at NAB. At NAB, MRC will announce a new range of product configurations for the dual-channel TwinStream, so virtually every analog broadcaster adding a digital service will find an appropriately engineered and priced TwinStream solution.

In partnership with NDS Americas, Wescam, and Wolf Coach, MRC will provide ongoing demonstrations throughout the NAB show of its new digital-ready CodeRunner family for electronic news gathering and outside broadcast applications. The new CodeRunner.1 mobile transmitter and CR.4 central receiver will provide digital video transport during the show from both a moving news truck, and a fixed wing aircraft. This demonstration features the new COFDM technology from NDS. As an NDS Business Partner, MRC is offering the NDS product solutions as part of its CodeRunner family of products.

In the California Microwave exhibit, EFData will highlight the SDM-2020 modem family as well as the new KST-14000, a new transceiver designed specifically for satellite news gathering applications.

California Microwave's New Initiative: Broadband IP Transport

In the Sands Convention Center, California Microwave will introduce a new family of products for distributing Internet protocol (IP) traffic over satellite. Three key applications will be on display: Virtual Private Networks (VPNs), broadband Internet distribution and broadband Internet backbones. The SpectraCast(R) product line is the result of California Microwave's acquisition of Crown Satellite. This family of products consists of transport multiplexers, IP gateways, Ethernet-enabled receivers, and accompanying network management software tools. Using these tools, enterprises may establish efficient distribution of Internet traffic as well VPNs. SpectraCast is flexible enough to augment existing terrestrial networks. In addition, California Microwave offers the necessary support to build a satellite network from the ground up.

The Microwave Radio Communications business area of California Microwave, Inc, is the leading US provider of analog and digital microwave systems for video transport applications. EFData is the world's leading provider of satellite modems, including the new SDM-2020 series for digital video transport with a choice of QPSK and 8PSK modulation.

California Microwave, Inc. (http://www.calmike.com) is a leading supplier of terrestrial wireless and satellite-based systems to support ultra-high speed Internet access, broadcast digital TV transport and worldwide Internet backbones. California Microwave also provides industry-leading solutions for satellite-based data communications and terrestrial wireless telemetry networks.

With its emergence as a leading architect of the wireless broadband evolution, California Microwave will change its name to better express this new identity. Effective April 29, 1999, it will become Adaptive Broadband Corporation (ADAP).