The UTF-030 from Teledyne Microwave Solutions is a RF Variable Attenuator with Frequency 100 to 2300 MHz, Attenuation Range 20 to 45 dB, Power 0.2 W, Insertion Loss 2 to 4 dB, Switching Time 0.5 to 1 uSec. Tags: Module with Connectors, Drop In, Voltage Controlled. More details for UTF-030 can be seen below.