The Keysight Y1902B is a high-precision coaxial adapter with a ruggedized 1.0 mm female (f) to 2.4 mm female (f) connector, designed for the frequency range from DC to 50 GHz. With a typical insertion loss of approx. 0.7 dB and a return loss of approx. 24 dB, it offers excellent RF performance, supports continuous power up to 10 W and is characterized by a repeatability of -35 dB for the 1.0 mm connection. This robust adapter is ideal for high-precision measurements in millimeter wave and radio frequency test systems.