Goto Section: 73.401 | 73.403 | Table of Contents
Revised as of September 1, 2021
Goto Year:2020 |
§ 73.402 Definitions.
(a) DAB. Digital audio broadcast stations are those radio stations
licensed by the Commission and use the In-band On-channel (“IBOC”)
system for broadcasting purposes.
(b) In Band On Channel DAB System. A technical system in which a
station's digital signal is broadcast in the same spectrum and on the
same channel as its analog signal.
(c) Hybrid DAB System. A system which transmits both the digital and
analog signals within the spectral emission mask of a single AM or FM
(d) Extended hybrid operation. An enhanced mode of FM IBOC DAB
operation which includes additional DAB subcarriers transmitted between
the analog FM signal and the inner edges of the primary DAB sidebands.
(e) Primary AM DAB Sidebands. The two groups of hybrid AM IBOC DAB
subcarriers which are transmitted 10 to 15 kHz above carrier frequency
(the upper primary DAB sideband), and 10 to 15 kHz below carrier
frequency (the lower primary DAB sideband).
(f) Multicasting. Subdividing the digital bitstream into multiple
channels for additional audio programming uses.
(g) Datacasting. Subdividing the digital bitstream into multiple
channels for additional data or information services uses.
(h) All-digital AM station. An AM station broadcasting an IBOC waveform
that consists solely of digitally modulated subcarriers and the
unmodulated AM carrier.
[ 72 FR 45692 , Aug. 15, 2007, as amended at 85 FR 78027 , Dec. 3, 2020]
Goto Section: 73.401 | 73.403
Goto Year: 2020 |
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