The 75P-089 from JFW Industries is a RF Variable Attenuator with Frequency DC to 500 MHz, Attenuation Range 63.75 dB, Attenuation Step 0.25 dB, Power 1 W, Insertion Loss 2 dB. Tags: Module with Connectors, Programmable, Digital, Computer Controlled. More details for 75P-089 can be seen below.