The 6813-30A from ARRA Inc. is a RF Variable Attenuator with Frequency 7.9 to 8.4 GHz, Attenuation Range 30 dB, Power 5 W, Peak Power 64.77 dBm, Insertion Loss 0.5 dB. Tags: Module with Connectors, Rotary, Continuously Variable. More details for 6813-30A can be seen below.