Center sectors can be very complex and hard to understand in Germany. Therefore, we recommend taking a closer look at the following maps to see who you should contact on the ground when departing from an airport inside the EDWW (Bremen) FIR.
if EDWW_M_CTR is online | 123.225
if EDWW_M_CTR is online | 124.175
if EDWW_M_CTR (124.175) and EDWW_B_CTR (123.225) is online
if EDWW_M_CTR (124.175) and EDMM_G/H/M_CTR (133.225 | 118.225 | 124.950) is online