The C18S5 from Preferred Power Products (P3) is a Fixed Attenuator with Frequency DC to 18 GHz, Attenuation 1, 2, 3, 6, 10, 15, 20, 30, 40 dB, Power 5 W, Peak Power 1000 W, Weight 10 to 20 g. Tags: Connectorized. More details for C18S5 can be seen below.