The 75P-174 from JFW Industries is a RF Variable Attenuator with Frequency DC to 2.15 GHz, Attenuation Range 63 dB, Attenuation Step 1 dB, Power 0.5 W, Insertion Loss 1.0 to 2.2 dB. Tags: Module with Connectors, Programmable, Digital, Computer Controlled. More details for 75P-174 can be seen below.