The QMC-CRYOATTF-10BLK – Female Bulkhead from Quantum Microwave is a Fixed Attenuator with Frequency DC to 18 GHz, Attenuation 10 dB, Power 0.1 W, Attenuation Accuracy ±0.5 dB, Insertion Loss 0.2 dB. Tags: Connectorized, Cryogenic Attenuator. More details for QMC-CRYOATTF-10BLK – Female Bulkhead can be seen below.