The 50P-1976 from JFW Industries is a RF Variable Attenuator with Frequency DC to 1 GHz, Attenuation Range 127 dB, Attenuation Step 1 dB, Power 1 W, Insertion Loss 0.27 to 2.0 dB. Tags: Module with Connectors, Programmable, Digital, Computer Controlled. More details for 50P-1976 can be seen below.