The Agilent 11852B is an instrument-grade, 50-ohm type-N female to 75-ohm type-N male adapter. This product is also available in a 50-ohm type-N male to 75-ohm type-N female configuration. The 11852B Option 004 has a 50 Ohm Type-N (m) and 75 Ohm Type-N (f) connector.