The PE7442-9 from Pasternack Enterprises Inc is a RF Variable Attenuator with Frequency DC to 18000 MHz, Attenuation Range 0 to 9 dB, Attenuation Accuracy ±1 dB, Power 2 W, Peak Power 200 W. Tags: Module with Connectors, Rotary. More details for PE7442-9 can be seen below.