The 3492-64 from KRATOS General Microwave is a RF Variable Attenuator with Frequency 2 to 4 GHz, Attenuation Range 64 dB, Attenuation Step 0.25 dB, Power 0.01 W, Insertion Loss 1.8 dB. Tags: Module with Connectors, Programmable, Digital. More details for 3492-64 can be seen below.