The 9428B from ARRA Inc. is a Mechanical Phase Shifter with Frequency DC to 18 GHz, Phase Shift 30 Degrees/GHz, 180 Degrees/6 GHz, Phase Adjustment 30 Degrees/GHz, 180 Degrees/6 GHz, Power W 100 W, Power 50 dBm. Tags: Module with Connector. More details for 9428B can be seen below.