The QVA-12000-18000-64-S from Qualwave is a RF Variable Attenuator with Frequency 12 to 18 GHz, Attenuation Range 0 to 64 dB, Insertion Loss 3 dB, Supply Voltage 0 to 10 V. Tags: Voltage Controlled. More details for QVA-12000-18000-64-S can be seen below.