RECOMMENDATION ITU-R BT.655-6 - Radio-frequency protection ratios for AM vestigial sideband terrestrial television ...
ANNEX 1 - Radio-frequency protection ratios for terrestrial television systems
1 Introduction
2 General
3 Synchronized carrier operation
4 Further studies
APPENDIX 1 TO ANNEX 1 - Protection ratios for 525-line television systems
1 Protection from co-channel interference
    1.1 Carriers separated by less than 1 000 Hz, non-controlled systems having the same or a different line-standard
    1.2 Carriers separated by parts of the line frequency ( fline), systems having the same line-standard, ...
2 Protection from adjacent-channel interference
    2.1 Protection from lower adjacent-channel interference, VHF and UHF bands
    2.2 Protection from upper adjacent-channel interference, VHF and UHF bands
3 Protection from image-channel interference
4 Protection from overlapping channel interference
5 Television signal affected by data signals
APPENDIX 2 TO ANNEX 1 - Protection ratios for 625-line television systems
1 Protection from co-channel interference
    1.1 Carriers separated by less than 1 000 Hz, non-controlled systems having the same or a different line-standard
    1.2 Carriers separated by multiples of a twelfth of the line frequency up to about  ...
2 Protection from adjacent-channel interference
    2.1 Protection from lower adjacent-channel interference
    2.2 Protection from upper adjacent-channel interference, VHF and UHF bands
3 Protection from image-channel interference
4 Protection from overlapping channel interference
    4.1 Protection ratios for vision signals interfered with by terrestrial digital audio broadcasting (T-DAB)
5 Television signal affected by data signals
APPENDIX 3 TO ANNEX 1 - RF protection ratios for television sound signals
ANNEX 2 - Tropospheric and continuous interference
ANNEX 3 - Different offset conditions
ANNEX 4 - Frequencies for precision offset
1 Introduction
2 Normalized precision offset between 0/12 and 12/12 fline
    2.1 Luminance range for all 625-line systems:
    2.2 Chrominance range only for PAL and SECAM systems
3 Computation of operational offset frequencies in a network with transmitter triplets
    3.1 Example