The SJ-ST-6000-18000-30-10 from A-Info is a RF Variable Attenuator with Frequency 6 to 18 GHz, Attenuation Range 30 dB, Attenuation Step 10 dB, Attenuation Accuracy ±2 dB, Power 1 W. Tags: Module with Connectors, Digital. More details for SJ-ST-6000-18000-30-10 can be seen below.