The AV-5964 from RLC Electronics is a RF Variable Attenuator with Frequency 5.9 to 6.4 GHz, Attenuation Range 20 dB, Power 5 W, P1dB 37 dBm, Insertion Loss 0.5 dB. Tags: Module with Connectors, Continuously Variable, Rotary. More details for AV-5964 can be seen below.