CoolTUBE® – Radiated Emissions Absorber MH&W International presents CoolTUBE® Radiated Emissions Absorber for the highest reliability and longevity of your VFD motor system! Variable Frequency Drives (VFD) create electromagnetic interference (EMI), conducted and radiated, in VFD motor systems. Without the use of some type of filter or choke, system related failures will result. Unique to …