The QDAT6-2-4-63 from Qualink Microwave is a RF Variable Attenuator with Frequency 2 to 4 GHz, Attenuation Range 63 dB, Attenuation Step 1 dB, Attenuation Accuracy 1.5 dB, Insertion Loss 7 dB. Tags: Module with Connectors, Digital. More details for QDAT6-2-4-63 can be seen below.