The 3493-64 from KRATOS General Microwave is a RF Variable Attenuator with Frequency 2.6 to 5.2 GHz, Attenuation Range 64 dB, Attenuation Step 0.25 dB, Power 0.01 W, Insertion Loss 2 dB. Tags: Module with Connectors, Programmable, Digital. More details for 3493-64 can be seen below.