Commercial-Grade Attenuators Midwest Microwave / Cinch Connectivity Solutions Commercial-Grade Attenuators are designed to meet the needs of commercial applications through a leading combination of cost-effectiveness and performance. Midwest Microwave / Cinch Connectivity Solutions Commercial-Grade Attenuators feature an SMA male to SMA female design and DC to 4GHz operation. The series is available in various attenuation values from 1dB to 20dB. These attenuators are ideal for cellular base stations, public safety systems, 5G network hardware, and more.