The AN18W10-xx from Atlantic Microwave is a Fixed Attenuator with Frequency DC to 18 GHz, Attenuation 0-10, 12, 20, 30, 40 dB, Power 10 W, Peak Power 500 W, Attenuation Accuracy ±0.5-1 dB. Tags: Module with Connectors. More details for AN18W10-xx can be seen below.