Hi David !
You can use LUMA for finding your map coordinates.
See:
http://www.gyges.dk/reporting_grids.htm
2225/05 Ost
is the center point of this map (with about 5 km radius)
http://mc.multimap.com/cs/bworld//M1...00W700H400.gif
121/05 Ost
is the center point of this map (with about 15 km radius)
http://mc.multimap.com/cs/bgb//X25/Y...00W700H400.gif
bye,
FrankieS