The 50PA-1020-XX from JFW Industries is a RF Variable Attenuator with Frequency DC to 1 GHz, Attenuation Range 127 dB, Attenuation Accuracy 0.6 to 1 dB, Power 1 W, Insertion Loss 2 dB. Tags: Rackmount, Programmable, Multi-Channel, System, Digital, Computer Controlled. More details for 50PA-1020-XX can be seen below.