HP 778D Coaxial Dual-Directional Coupler, 100 MHz to 2 GHz

Agilent Coaxial Switch DC to 20GHz 33314B options 024 100

Avantek DBX-184H Mixer (DC-18GHz)

DowKey 431CJR-480823 SP3T DC-18 GHZ SMA 24VDC Coax Switch, ROHS, New Open Box

RF Shield Test Enclosure Filter EMI Filter with 4 x N Female to N Female Baffle

Aaren Mixer Double Balanced 18 to 40GHz Connector LO/RF 2.92mm (f) / IF SMA (f)

Keithley 7016A 50 Ohm, 2 GHz Multiplexer

Anaren 0172-3-1127-002 3dB hybrid coupler 2-6 GHz 0°&90° output tested see plots