The AT-3000-30V from UMCC is a RF Variable Attenuator with Frequency 100 MHz to 3 GHz, Attenuation Range 30 dB, Power 1 W, P1dB 30 dBm, Insertion Loss 2.5 dB. Tags: Module with Connectors, Voltage Controlled. More details for AT-3000-30V can be seen below.