https://en.wikipedia.org/wiki/Gee_%28navigation%29#/media/File:J_M_Briscoe24_07_200713_09_22IMG2114_GEE_CONTROL.JPG

have you had a look at the 'gee control cabinets' yet, dazzlenation?...because i seem to remember 'something like that' in varro's lab...see previous post....go figure:

along with the 'ghost' signal:

and the transmitter: