The HA50-5-10 from MCLI is a RF Variable Attenuator with Frequency 2 to 4.2 GHz, Attenuation Range 10 dB, Power 50 W, Peak Power 66.99 dBm, Insertion Loss 0.5 dB. Tags: Module with Connectors, Continuously Variable, Rotary. More details for HA50-5-10 can be seen below.