The QDA-1000-2000-63.75-0.25 from Qualwave is a RF Variable Attenuator with Frequency 1 to 2 GHz, Attenuation Range 0 to 63.75 dB, Attenuation Accuracy ±1.5 dB, Insertion Loss 1.5 dB. Tags: Digital. More details for QDA-1000-2000-63.75-0.25 can be seen below.