The 9428B-28 from ARRA Inc. is a Mechanical Phase Shifter with Frequency DC to 18 GHz, Phase Shift 30° / GHz 180° min at 6 GHz, Phase Adjustment 30° / GHz 180° min at 6 GHz, Power W 100 W, Power 50 dBm. Tags: Module with Connector. More details for 9428B-28 can be seen below.