The 50PA-129-XX from JFW Industries is a RF Variable Attenuator with Frequency 30 MHz to 3 GHz, Attenuation Range 63.5 dB, Attenuation Accuracy 0.3 to 0.5 dB, Power 0.5 to 2 W, Insertion Loss 2.7 to 4.5 dB. Tags: Rackmount, Programmable, Multi-Channel, System, Digital, Computer Controlled. More details for 50PA-129-XX can be seen below.