The QDAT5-18-26.5-31 from Qualink Microwave is a RF Variable Attenuator with Frequency 18 to 26.5 GHz, Attenuation Range 31 dB, Attenuation Step 1 dB, Attenuation Accuracy 1.5 dB, Insertion Loss 8 dB. Tags: Module with Connectors, Digital. More details for QDAT5-18-26.5-31 can be seen below.