The 50P-0591 from JFW Industries is a RF Variable Attenuator with Frequency DC to 3 GHz, Attenuation Range 85 dB, Attenuation Step 1 dB, Power 1 W, Insertion Loss 2.5 to 4.5 dB. Tags: Module with Connectors, Programmable, Digital, Computer Controlled. More details for 50P-0591 can be seen below.