[TowerTalk] AB-577 extension anchor points?

[RICHARD BOYD]

Anyone know how far the "extension" anchor points are from the base on an 
AB-577 portable tower, military surplus?  The anchor points for the first 
set are in the manual and can be found with the triangulation rope that 
comes with the AB-577 -- good up to 50'.  But, the tower can be taken up to 
75' with a second set of guy anchors.  So, I need to know the distance of 
the second set of anchors from the base (or from the first set of anchors).
73 - Rich, KE3Q