Ferrite Components model number SC3-70 / 8388405 Rev F, 4-port differential phase shift circulator. Includes 5665898 Rev F Model SHG-29, PN 5645957 Rev F Model SL2-15, PN 8508293 Rev B Model SHG-27, PN 5674734 Rev E Model SWG=26, P/N 5646096 Model SWC-30, P/N 5646096 Model SWG-30, and R284-3 / 5688684 S005 U1/7 Rev E waterload. Used. Removed from working machine that was disassembled in November 2011.