The 50PA-201-XX from JFW Industries is a RF Variable Attenuator with Frequency 30 MHz to 3 GHz, Attenuation Range 95 dB, Attenuation Accuracy 0.50 to 1.25 dB, Power 0.5 to 2 W, Insertion Loss 6 to 6.5 dB. Tags: Rackmount, Programmable, Multi-Channel, System, Digital, Computer Controlled. More details for 50PA-201-XX can be seen below.