DVB-T / T2   Non Critical Mask Critical Mask
Breakpoints
(Center Freq.)
Ref. 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 1.0 / ATSC 3.0   LPTV Simple Mask FCC Mask
Breakpoints
(Center Freq.)
Ref. 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
C.M.
(Case 1)
N.C.M.
(Case 2)
S.C.M.
(Case 3)
S.C.M. 12D
(Case 4)
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