DVB-T / T2   Non Critical Mask Critical Mask
Breakpoints
(Center Freq.)
Reference TX Spectrum Mask
Requirement
Filter
Requirement
Mask
Requirement
Filter
Requirement
± 4.2 MHz – 36 dB – 40 dB – 4 dB – 50 dB – 14 dB
± 6 MHz – 36 dB – 52 dB – 16 dB – 62 dB – 26 dB
± 12 MHz – 36 dB – 77 dB – 41 dB – 87 dB – 51 dB

Notes

  • The system analysis has been carried out with reference to an out-of-band noise of -36 dBc
  • Adjacent Channels combination can be implemented independently of the required Mask (e.g.: Critical or Non-Critical): there is no strictly need of 8-Pole Filters to combine adjacent channels
ATSC / ATSC 3.0   LPTV Simple Mask FCC Mask
Breakpoints
(Center Freq.)
Reference TX Spectrum Mask
Requirement
Filter
Requirement
Mask
Requirement
Filter
Requirement
± 3.5 MHz – 36 dB – 35 dB 0 dB – 36 dB 0 dB
± 6 MHz – 36 dB – 42 dB – 6 dB – 65 dB – 29 dB
± 9 MHz – 36 dB – 60 dB – 24 dB – 99 dB – 63 dB

Notes

  • The system analysis has been carried out with reference to an out-of-band noise of -36 dBc
  • Adjacent Channels combination can be implemented independently of the required Mask (e.g.: Critical or Non-Critical): there is no strictly need of 8-Pole Filters to combine adjacent channels
ISDB-T   Non Critical Mask Sub Critical Mask Critical Mask
B.points
(C. Freq.)
Ref. TX Spectrum Mask
Requir.
Filter
Requir.
Mask
Requir.
Filter
Requir.
Mask
Requir.
Filter
Requir.
± 3.15 MHz – 36 dB – 36 dB 0 dB – 43 dB – 7 dB – 50 dB – 14 dB
± 4.5 MHz – 36 dB – 53 dB – 17 dB – 60 dB – 24 dB – 67 dB – 31 dB
± 9 MHz – 36 dB – 83 dB – 47 dB – 90 dB -54 dB – 97 dB – 61 dB

Notes

  • The system analysis has been carried out with reference to an out-of-band noise of -36 dBc
  • Adjacent Channels combination can be implemented independently of the required Mask (e.g.: Critical or Non-Critical): there is no strictly need of 8-Pole Filters to combine adjacent channels
DAB / DAB+
T-DMB
Case 1
(Critical Mask)
Case 2
(Non Crit. Mask)
Case 3 Case 4
(Block 12D)
B.points
(C. Freq.)
Ref. TX Spectrum Mask
Requir.
Filter
Requir.
Mask
Requir.
Filter
Requir.
Mask
Requir.
Filter
Requir.
Mask
Requir.
Filter
Requir.
± 0.97 MHz – 35 dB – 45 dB – 10 dB – 30 dB 0 dB – 45 dB – 10 dB – 52 dB – 17 dB
± 1.75 MHz – 35 dB – 80 dB – 45 dB – 50 dB – 15 dB – 80 dB – 45 dB – 83 dB – 48 dB
± 2.2 MHz – 35 dB – 80 dB – 45 dB – 61 dB – 26 dB – 100 dB – 65 dB – 100 dB – 65 dB
± 3 MHz – 35 dB – 80 dB – 45 dB – 80 dB – 45 dB – 100 dB – 65 dB – 100 dB – 65 dB

Notes

  • The system analysis has been carried out with reference to an out-of-band noise of -35 dBcValues refer to Power levels ≤ 1 kW.
  • For Power levels > 1 kW, Filter Requirements must be increased according to the increased dB ratio (E.g. 2 kW: increase Filter Requirements by 3 dB)
  • Adjacent Block combination can be implemented independently of the required Mask (e.g.: Critical or Non-Critical): there is no strictly need of 8-Pole Filters to combine adjacent blocks