Two masts (height = 99,5 m corresponding to 0,182 lambda) with top load:
mast 2 in front,
mast 1 in the back
These masts are supported by guys with one insulator only. This leads to a large top load and to a mast which is completely grounded ststically.
Hence the reliability of the antenna is increased remarkably during thunder storms.
More detailed information with a lot of interesting photos by somebody who
lives in Nordkirchen: