New Radiotronix Wi.232(TM) Modules Now Available from Richardson Electronics; High Performance, Very Low Cost RF Modules Support Power-Sensitive, Feature-Rich Applications

LAFOX, Ill.--(BUSINESS WIRE)--April 27, 2006--Richardson Electronics, Ltd. announced today a franchise distributor partnership agreement with Radiotronix, Inc., of Oklahoma City, Oklahoma. Under terms of the agreement, Richardson will distribute, on a global basis, the entire line of Wi.232 DTS and frequency hopping spread-spectrum modules, as well as the Wi.M family of developer-controlled, spread-spectrum capable products developed by Radiotronix. These modules were designed to support powerful, feature-rich Radio Frequency (RF)/Wireless applications such as remote control, wire replacement, automated meter reading, industrial and home automation, medical, security and HVAC.

"The addition of Radiotronix compliments our growing portfolio of module products," said Chris Marshall, Vice President of Richardson's Wireless & Broadband Communications Business Unit. "Today's digital convergence requires non-traditional RF engineers to seek a radio systems architecture. The ability of Radiotronix to provide the Wi.232 product family with complete pre-approved FCC certification, allows Richardson Electronics to continuously expand our wireless customer base. The integrated functionality Radiotronix provides eliminates NRE, reduces production costs significantly and allows rapid time-to-market".

The new Wi.232(TM) modules are based on Semtech's industry-proven XE1203F RF platform.

"The addition of a highly technical distributor like Richardson, and their broad international resources, allows Radiotronix to quickly support the growing demand for our products worldwide," said Thomas Hoyt, Vice President of Sales for Radiotronix." According to Mr. Hoyt, "Radiotronix' embedded module products provide customers a high performance and flexible wireless design platform that allow them to get to production fast."

In addition to the Wi.232/Wi.M modules, Richardson will also offer the Radiotronix Rapid Development Quick Start Kits. These kits support rapid evaluation and development using Evaluation Modules (EVMs). These EVMs were created as an easy-to-use prototyping tool for the Wi. family of surface-mount modules. Design engineers can get a quick proof-of-concept prototype working without having to be concerned with RF-specific design considerations. Each EVM is populated with the appropriate module, an LDO regulator, an SMA connector and two-pinned headers.

About Radiotronix, Inc.

Radiotronix, Inc. is a privately held, embedded wireless company headquartered in Oklahoma City, Oklahoma, that designs, manufactures and markets embedded wireless modules and RF solutions for customer applications. These modules work well in a broad range of applications, such as industrial and home controls, automated meter reading, inventory management, wireless sensing, and medical instrumentation. Radiotronix' core competencies are radio software, and hardware design, turnkey product design, and RF product manufacturing.

More information about Radiotronix and its other products is available online at www.radiotronix.com.

About Richardson Electronics, Ltd.

Richardson Electronics, Ltd. is a global provider of "Engineered Solutions," serving the RF, Wireless and Power Conversion; Electron Device; Security; and Display Systems Markets. Richardson delivers engineered solutions for its customers' needs through product manufacturing, systems integration, prototype design and manufacture, testing and logistics. Press announcements and other information about Richardson are available online at http://www.rell.com/investor.asp.

This release includes certain "forward-looking" statements within the meaning of the Private Securities Litigation Reform Act of 1995. Statements in this press release regarding the Company's business which are not historical facts represent "forward-looking statements" that involve risks and uncertainties. For a discussion of such risks and uncertainties, which could cause actual results to differ from those contained in the forward-looking statements, see "Safe Harbor Statement Under the Private Securities Litigation Reform Act of 1995" in the Company's annual report on Form 10-K. The Company assumes no responsibility to update the forward-looking statements in this release as a result of new information, future events, or otherwise