John,
A little searching of the posts in the "Photo Gallery" forum turned up several photos showing the wire exiting the mast. Take a look:
#6 at http://www.pearsonariel.org/discussi...read.php?t=526
#12 at http://www.pearsonariel.org/discussi...read.php?t=433
#4 at http://www.pearsonariel.org/discussi...read.php?t=522
#7 at http://www.pearsonariel.org/discussi...read.php?t=502