In Lichtenrade, besides the one at Rudolf-Pechel-Straße 8B, o2 has a second site on a gabled roof, that does 3G and 4G. This one is shared with Vodafone.
Seen from the north-west from the opposite side of Lichtenrader Damm:
View from the west at the crossing:
Seen from the east:
A little closer: