RECOMMENDATION ITU-R BT.1123 - Planning methods for 625-line terrestrial television in VHF/UHF bands ANNEX 1 - Planning methods for terrestrial television in VHF/UHF bands 1 General 2 Theoretical techniques for an international plan 2.1 General 2.2 Implications of applying regular lattice planning principles in specific terrestrial television bands 2.3 Band I 2.4 Band III 2.5 General comments on planning in VHF television bands 2.6 The UHF band 3 Frequency offset plan 3.1 General 3.2 Non-precision offset 3.3 Precision offset 3.4 Offset distribution in precision offset operation 4 Capacity of the TV bands 4.1 Capacity of the VHF bands 4.2 Capacity of the UHF bands 5 Assessment of planned coverage APPENDIX 1 TO ANNEX 1 - Lattice planning: basic principles for the development of geometrically regular lattices ... 1 Basic assumptions 2 Geometrically regular lattices 3 Linear channel-distribution schemes 4 Multiple coverage and channel grouping 5 Non-linear distributions ANNEX 2 - Frequency planning constraints (625-line systems) 1 Introduction 2 Constraints introduced by television broadcast receivers 2.1 Television receiver local-oscillator radiation 2.2 Image channel 2.3 Harmonics from VHF/FM receiver local-oscillators 2.4 Harmonics and intermodulation products generated under overload conditions in receivers 3 Transmitting antenna system limitations 4 Conclusions for television planning procedures