Knowles Precision Devices has more than 40 years of experience developing RF and microwave components that meet the rigorous requirements for a variety of military, aerospace, telecommunications and industrial markets. Whether you need a catalogue part, build to print services or custom components, Knowles performs special life testing, sectioning, and additional electrical measurements to meet the MIL standards aerospace and defence require. Our filters offer stable performance over a wide frequency range, from DC to 67+ GHz, and are rigorously tested to ensure the highest standards. Plus, our SMD components enable streamlined assembly for easy addition to your manufacturing process. Our products are worldwide in use in the most advanced military and aerospace instrumentation and communication systems. A wide range of subsea, air and space navigation, communication and detection systems rely on the superior technology and performance of our filters.