The 940-60-11 from Weinschel by Spectrum Control is a RF Variable Attenuator with Frequency DC to 4 GHz, Attenuation Range 60 dB, Power 5 W, Peak Power 56.99 dBm, Insertion Loss 6 dB. Tags: Module with Connectors, Continuously Variable, Rotary. More details for 940-60-11 can be seen below.