The QDAT5-6-18-31 from Qualink Microwave is a RF Variable Attenuator with Frequency 6 to 18 GHz, Attenuation Range 31 dB, Attenuation Step 1 dB, Attenuation Accuracy 1.5 dB, Insertion Loss 5.5 dB. Tags: Module with Connectors, Digital. More details for QDAT5-6-18-31 can be seen below.