ats4dATS4D Specifications: Attenuator Type: Variable ; Frequency: 2 to 4 GHz ; Insertion Loss: 2.9 dB ; VSWR: 1.6 1 ; Attenuation: 60 dB ; Package Type: CASE AT Applications. EW SystemsATS CM4D helps manufacturers to gain real value from their dimensional data, gathered from all sources, in all formats. Whether you’re comparing your product to the orinal desn, finding