The PRO-ATT 20 dB-25-3-N(f) from Amphenol Procom is a Fixed Attenuator with Frequency DC to 3 GHz, Attenuation 20 dB, Power 25 W, Weight 650 gm, Attenuation Accuracy ±0.75 to 1.5 dB. Tags: Module with Connectors. More details for PRO-ATT 20 dB-25-3-N(f) can be seen below.