K&L Microwave, Inc., a subsidiary of the Dover Corporation and engaged in the design and manufacture of RF and Microwave filters, duplexers and sub-assemblies. K&L is ISO 9001-2000 and ISO-14001 certified and offers extensive filter-based product range in the industry, ranging from 300 kHz to 94. K&L is a premier filter supplier for both military and commercial markets. They have over 35 years of RF and Microwave design and manufacturing experience.

Product technologies include the following:

• Designs and manufactures RF and Microwave filters, duplexers and sub-assemblies, including ceramic, lumped element, cavity, waveguide and tunable filters.
•  High-performance receive and transmit filters, delay line filters, duplexers and diplexers, combiners, receive multicouplers and wireless system assemblies for base station infrastructure requirements.
• K&L's Microwave and RF filters are used in systems such as satellite communications, radar, radio communications, fire control radars, telemetry applications, missile guidance systems, mobile radio base stations and air traffic control and communications.

The product range include the following:

• Base station products
• Cavity filters
• Ceramic filters
• Kel-fil
• Lumped component
• Kel -com
• Mini-Max
• MFA
• Suspended substrates
• Tubular filters
• Tunable filters
• Waveguide filters