DTTB Power Levels
Without considering spectrum spread from the DTTB, the power which may exist between DTTB and PAL without causing interference is :
- for adjacent channel operation
- limited by sound in lower adjacent, DTTB 8 dB below PAL
- limited by vision in upper adjacent, DTTB 3 dB below PAL
- for co - channel operation
- limited by vision, DTTB 45 dB below PAL