The QDAT6-0.4-2-63 from Qualink Microwave is a RF Variable Attenuator with Frequency 400 MHz to 2 GHz, Attenuation Range 63 dB, Attenuation Step 1 dB, Attenuation Accuracy 1 dB, Insertion Loss 4 dB. Tags: Module with Connectors, Digital. More details for QDAT6-0.4-2-63 can be seen below.