Rockwell Collins Names MtronPTI a Top Preferred Supplier


Yankton, SD - May 16, 2006 - MtronPTI of Yankton, SD, has been recognized as one of the
Top Preferred Suppliers for 2006 by Rockwell Collins.
MtronPTI, producer of frequency control products, was cited for performance in meeting
delivery schedules and product quality. MtronPTI was also recognized for design and
engineering support and the teamwork demonstrated with Rockwell Collins.

A recognition plaque was presented at the recent Rockwell Collins Annual Supplier Conference
in Cedar Rapids, Iowa.

Rockwell Collins is a worldwide leader in the design, production, and support of communication
and aviation electronics for commercial and government customers. The company's 17,000
employees in 27 countries deliver industry-leading communication, navigation, surveillance,
display, flight control, in-flight entertainment, information management, and maintenance,
training and simulation solutions. Additional information is available at
www.rockwellcollins.com.

MtronPTI was formed in October 2004 with the merger of M-tron Industries Inc. and Piezo
Technology Inc. of Orlando, Florida. MtronPTI is a leading designer and manufacturer of
advanced technology frequency control products and electronic filter products. It is based in
Yankton, South Dakota with design, sales and manufacturing locations in North America, Asia
and Europe. MtronPTI is a subsidiary of the Lynch Corporation. Lynch is listed on the
American Stock Exchange and traded under the symbol - LGL. View the MtronPTI website at
www.mtronpti.com

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