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Keithley Joins WiMAX FORUM


CLEVELAND, OH, December 13, 2007

Keithley Instruments (NYSE:KEI), a leader in solutions for emerging measurement needs, announced today that it has become a member of the WiMAX Forum®. The WiMAX Forum is an industry-led, nonprofit organization responsible for promoting and certifying interoperable WiMAX™ products. WiMAX technology enables wireless high-speed Internet access for laptops and other mobile devices over much longer distances than current wireless technologies such as Wi-Fi.

"Given our aggressive investments in expanding our RF measurement capabilities, our participation in this important industry forum is a natural extension of our commitment to the wireless communications test market," said Mark Hoersten, vice president, business management. "Wireless test in general and WiMAX technologies in particular are fast-moving platforms that require the very latest test solutions, so our participation in the Forum's activities will play a large role in ensuring our solutions are consistent with the very latest needs of the market."

Keithley has introduced a variety of new RF instrument platforms and software in recent years. Keithley's newest offering, the 4X4 RF MIMO Test System, consists of the Model 2920 Vector Signal Generator with up to 80 MHz of bandwidth and 100 MSamples of arbitrary waveform generator memory and the Model 2820 Vector Signal Analyzer with 40 MHz of signal bandwidth. Both units feature a 6-Hz frequency range for testing nearly any wireless signal, including Mobile WiMAX, WLAN 802.11n MIMO, and a range of other standard signals such as GSM, EDGE, and W-CDMA.

For More Information
For More Information For more information on Keithley's RF product family or any of its RF or general test solutions, contact the company at:

Telephone: 800-688-9951
  440-248-0400
FAX: 440-248-6168
E-mail: publisher@keithley.com
Internet: www.keithley.com
Address: Keithley Instruments, Inc.
  28775 Aurora Road
  Cleveland, OH 44139-1891

About Keithley Instruments
With more than 60 years of measurement expertise, Keithley Instruments has become a world leader in advanced electrical test instruments and systems from DC to RF. The products solve emerging measurement needs in production testing, process monitoring, product development, and research.