The QDAT6-0.4-10-63 from Qualink Microwave is a RF Variable Attenuator with Frequency 400 MHz to 10 GHz, Attenuation Range 63 dB, Attenuation Step 1 dB, Attenuation Accuracy 1.5 dB, Insertion Loss 9.5 dB. Tags: Module with Connectors, Digital. More details for QDAT6-0.4-10-63 can be seen below.