The 50PA-580 from JFW Industries is a RF Variable Attenuator with Frequency 200 MHz to 3 GHz, Attenuation Range 127 dB, Attenuation Accuracy 0.6 dB, Power 0.1 W, Insertion Loss 6.2 dB. Tags: Benchtop, Programmable, Multi-Channel, System, Digital, Computer Controlled. More details for 50PA-580 can be seen below.