Keysight 11852B/004 Adapter: 50 to 75 Ohms Impedance Matching, Coaxial, RF/Microwave, Precision, Measurement Accuracy
Keysight N9355B Power Limiter: Protect sensitive devices from power surges with this 18 GHz, 50 Ohm, 1W limiter featuring Type-N connectors, part of the N9355/6 Series.
Rohde & Schwarz ZN-Z54 Calibration Unit: 50 Ohm, 9 kHz-40 GHz, 2-Port, 2.92 mm (f), for VNAs, ZN-Z5x Series