The 5-6843-30 B from ARRA Inc. is a RF Variable Attenuator with Frequency 7.9 to 8.4 GHz, Attenuation Range 30 dB, Attenuation Accuracy ±0.5 dB, Power 5 W, Peak Power 64.77 dBm. Tags: Module with Connectors, Continuously Variable, Rotary. More details for 5-6843-30 B can be seen below.