The 603-30-1F18 from MECA is a Fixed Attenuator with Frequency DC to 18 GHz, Power 2, 5, 10, 20, 50, 100, 150 W, Peak Power 125 W, Weight 48 oz, Attenuation Accuracy 0.5 to 1.75 dB. Tags: Module with Connectors. More details for 603-30-1F18 can be seen below.