Bill Stumpf testing at our “open field” in the early days of the company. April 1983

D.L.S. Electronic Systems begins weekend operations
Open Field testing begins in Genoa City, WI — literally in an open field!

June 20, 1983

D.L.S. begins full time operation at office space in Glenview, IL & in Genoa City, WI

Late 1983

First expansion in Genoa City


D.L.S. becomes one of the first labs accredited by NVLAP to perform FCC testing
Don begins teaching EMC at University of Wisconsin at Madison/Milwaukee


D.L.S. receives accreditation by NVLAP for MIL-STD testing


Second expansion in Genoa City
D.L.S. is one of the first companies to test for the CE Mark


After outgrowing the Glenview location, the company makes a move to Wheeling, IL
9 climate-controlled labs under one roof


D.L.S. receives TUV Appointment, TUV’s recognition of the validity of our test data
Site Three is built in Genoa City, with an enlarged door and additional storage area


Wheeling facility expanded to include Product Safety testing


Wheeling facility expanded to accomodate 3 additional chambers for large Military & RTCA testing


D.L.S. is awarded the rare honor of NARTE Certified Organization accreditation
Requires 70-100% of engineers and technicians to be NARTE certified


D.L.S. is recognized as CAB for EMC and R&TTE, equivalent to a Notified Body in Europe


Genoa City Site One is rebuilt
This effectively expanded our wireless capabilities by adding a 3-meter, semi-anechoic chamber


D.L.S. is accepted into the UL Third Party Test Data Program, making D.L.S. Conformity Assessment a Certificated UL Agency
D.L.S. begins offering TestView, secure remote witnessing system (for more information, call Jack Black at 847-537-6400 or go to TestView TM Remote Access Monitoring of Compliance Testing)


D.L.S. is recognized by the Wireless Power Consortium as an authorized Qi test lab


Wheeling campus expands with new building for Product Safety and Environmental testing


D.L.S. receives accreditation by ACLASS for environmental testing


D.L.S. receives ACIL Customer Quality Service Award

IEEE EMC Society names D.L.S. Electronic Systems founder Donald L. Sweeney recipient of the Laurence G. Cummings Award for his contributions to EMC Education


D.L.S. Electronic Systems is named ACIL Quality Award Winner for third year in a row


D.L.S. Electronic Systems expands Environmental Testing laboratory to increase MIL STD, RTCA DO-160 and Automotive Testing services and capabilities


D.L.S. Electronic Systems expands TestView remote witnessing system to accommodate customers working remotely


D.L.S. Electronic Systems founder and president Donald L. Sweeney passes away, leaving a highly-trained staff of engineers to carry on his work.  Obituary here

Corey Sweeney becomes President of D.L.S. 

Mark Rozema named Technical Manager of D.L.S.

D.L.S. receives ACIL Customer Quality Service Award for 7th year in a row

D.L.S. approved under the FDA Accreditation Scheme for Conformity Assessment of Medical Electrical Equipment, Medical Electrical Systems, and Laboratory Medical Equipment