The RA20-4 from Res-Net Microwave is a Fixed Attenuator with Frequency DC to 4 GHz, Attenuation 1 to 40 dB, Power 20 W, Peak Power 1 kW, Attenuation Accuracy ±0.30 dB@ DC - 2 GHz, ±0.50 dB@ DC - 4 GHz, ±0.75 dB@ DC - 6 GHz. Tags: Module with Connectors. More details for RA20-4 can be seen below.