Adjustable Phase Shifter, 18 GHz to 40 GHz, with an Adjustable Phase Range of 0 to 360 Degrees and 2.92mm,2.2-3.8GHz Phase Shifter – DS Instruments Microwave Equipment,Guyatone PS-3 Phase Shifter | Reverb,Guyatone PS-2 Phase Shifter | Reverb Portugal