About EMR Corp.

17431 N. 25th Ave. Phoenix AZ 85023

EMR Corporation was founded in 1980 by William Lieske, Sr. as an OEM supplier of ferrite and hybrid devices to the land mobile communications and broadcast industries. Until his passing in 2007, Bill was involved in radio communications for more than 70 years. Beginning with a radio amateur license at the age of 13, he went on to work in military radar, public safety, radio communication manufacturing and commercial corporate sales. As the chief engineer, Bill's approach to R.F. systems component design was without parallel in the industry. Bill's work has helped set standards in the U.S. and international land mobile communications and antenna site management industries.

Soon after founding EMR Bill expanded his scope of activities to include the design and manufacturing of ferrite and cavity resonant devices and complex combinations of R.F. filtering products, such as antenna duplexers, hybrid and cavity resonant combining networks and receiver multicoupling.

Today, EMR offers a complete line of antenna site and mobile filtering products covering the R.F. spectrum from 30 MHz to 2.8 GHz, and products capable of handling power levels up to 2 KW. Our line is extensive, we have many products to provide effective communications in today's challenging R.F. environments.

William Lieske, Sr. retired from day-to-day operations in 1999, but remained active in the company until his death in 2007. William Lieske, Jr. took over general management of the company in the late 1990s and continues today as President and CEO of EMR Corporation. The legacy of Bill Lieske, Sr has given Bill Jr the training and tools to continue operations with an efficient and effective team of highly trained, motivated, dedicated employees. With our specialized team members providing leadership, top notch engineering and state of the art manufacturing we design and manufacture a wide variety of custom products as well as products for standardized applications. EMR excels in unique designs to meet exact customer requirements.

From our founding, our corporate philosophy has been, is, and will be to provide the highest quality products, at the greatest level of technical excellence, with the most practical consideration, at an economical price.


Meet the Team!