 requirements apply separately to each supported operating band. For BS types 1-C and 1-H that are capable of multi-band operation, various structures in the form of combinations of different transmitter and receiver implemen- tations (multi-band or single-band) with mapping of transceivers to one or more antenna con- nectors for BS type 1-C or TAB connectors for BS type 1-H in different ways are possible [5]. The conducted transmitter characteristics are specified at the antenna connector for BS type 1-C and at the TAB connector for BS type 1-H. For BS type 1-H, the minimum number of supported geographical cells (i.e., geographical areas covered by beams) must be identified. 678 Chapter 5 The minimum number of supported geographical cells (Ncells) corresponds to the BS setting with the minimum amount of cell splitting when transmitting on all TAB connectors for the operating band, or with the minimum number of transmitted beams. Each TAB connector of the BS Type 1-H supporting transmission in an operating band is mapped to one TAB connector TX min cell group. The TAB connector TX min cell group is an operating band- specific declared group of TAB connectors to which BS type 1-H conducted transit require- ments are applied. In the latter definition, the group corresponds to the group of TAB connectors which are responsible for transmitting a cell when the BS type 1-H setting corre- sponding to the declared minimum number of cells with transmission on all TAB connec- tors supporting an operating band, but its existence is not limited to that condition. Note that the mapping of the TAB connectors to cells/beams is implementation dependent. The number of active transmitter units that are considered when calculating the conducted trans- mitter emissions limits (NTXU-counted) for BS type 1-H is given as NTXU-counted = min(NTXU-active> 8Ncells) where NTXU-countedpercell is used for scaling of basic limits and is cal- culated as NTXU-countedpercell = NTXU-counted/Neells. The parameter NTXU-active depends on the actual n