ats4dAmerican truck simulator mods, ats mods, ats 1.53, ats 1.54. Other. COLD RAIN V0.46 1.54ATS4D-H Specifications: Attenuator Type: Variable ; Frequency: 2 to 4 GHz ; Insertion Loss: 2.9 dB ; VSWR: 1.6 1 ; Attenuation: 60 dB ; Package Type: HERMETIC SEALED, CASE AT