Minimum Loss Pad / Adapter DC 3GHz, 50Ohm - 75Ohm or 75Ohm - 50Ohm Impedance Converter, Type-N Connectors The Agilent (now Keysight) 11852B is an instrument-grade, 50 ohms type N female to 75 ohm type N male adapter. It is also available in 50 ohms type N male to 75 ohms type N femal configuration. (With option 004 has the 11852B 50 ohms type N male and 75 ohms type N female connector.) Insertion loss: 5.7 dB, typ. Return loss: > 27 dB Electrical length: 1.98 in. Overall length: 2.37 in. Diameter: 0.87 in. Reference plane to reference plane length (nominal): 1.98 in.