The 4422K from Anritsu is a RF Variable Attenuator with Frequency DC to 20 GHz, Attenuation Range 0 to 110 dB, Attenuation Accuracy 0.3 to 2.2 dB, Power 1 W, Peak Power 50 dBm. Tags: Module with Connectors, Programmable, Digital, Computer Controlled. More details for 4422K can be seen below.