The 75P-177 from JFW Industries is a RF Variable Attenuator with Frequency 50 MHz to 2 GHz, Attenuation Range 127 dB, Attenuation Step 1 dB, Power 0.01 W, P1dB 10 dBm. Tags: Module with Connectors, Programmable, Digital, Computer Controlled. More details for 75P-177 can be seen below.