The 3105 from Narda-ATM is a Fixed Attenuator with Frequency DC to 6.5 GHz, Attenuation 3, 6, 10, 20, 30dB, Power 2 W, Peak Power 250 W, Attenuation Accuracy ± 0.3 dB Max @ 3 Db - 6 dB to ± 0.75 dB Max @ 21 - 30 Db. Tags: Module with Connectors. More details for 3105 can be seen below.