The QMC-CRYOATT-06BLK from Quantum Microwave is a Fixed Attenuator with Frequency DC to 18 GHz, Attenuation 6 dB, Power 0.1 W, Attenuation Accuracy ±0.5 dB, Insertion Loss 0.5 dB. Tags: Connectorized, Cryogenic Attenuator. More details for QMC-CRYOATT-06BLK can be seen below.