The 3494H-64 from KRATOS General Microwave is a RF Variable Attenuator with Frequency 3 to 9 GHz, Attenuation Range 64 dB, Attenuation Step 0.25 dB, Power 0.001 W, Insertion Loss 2.4 to 2.5 dB. Tags: Module with Connectors, Programmable, Digital. More details for 3494H-64 can be seen below.