The PVA-500M18G-60-SFF from Quantic PMI is a Voltage Variable Attenuator / Modulator that operates from 0.5 to 18 GHz. It provides an attenuation range of 60 dB with a flatness of ±2.5 and has an insertion loss of 4 dB. This attenuator/modulator has an attenuation accuracy of 0.86 dB and a rise and fall time of 2 us. It is available in a module that measures 2.00 x 1.81 x 0.50 inches and has SMA-female connectors.