The QVA-500-1000-64-S from Qualwave is a RF Variable Attenuator with Frequency 0.5 to 1 GHz, Attenuation Range 0 to 64 dB, Insertion Loss 1.5 dB, Supply Voltage 0 to 10 V. Tags: Voltage Controlled. More details for QVA-500-1000-64-S can be seen below.