The 50P-1128 from JFW Industries is a RF Variable Attenuator with Frequency DC to 2 GHz, Attenuation Range 63.75 dB, Attenuation Step 0.25 dB, Power 0.5 W, Insertion Loss 3.0 to 3.5 dB. Tags: Module with Connectors, Programmable, Digital, Computer Controlled. More details for 50P-1128 can be seen below.