Overview of ARIB Technical Report (TR-B21)｜Association of Radio Industries and Businesses

Overview of ARIB Technical Report (TR-B21)

1. Overview

TR Number	ARIB TR-B21
Technical Report Name	Operational Guidelines for Push-to-Talk Communication Line for Broadcasting Service
Enactment Date	05.25.2004
General Description	For effective frequency utilization, it is demanded that a push-to-talk communication line for broadcasting service should shift from the current FM system to the narrowed digital system. This technical report specifies to use the real zero single sideband (hereinafter referred to as "RZ SSB”) modulation system which is available for the time being, for the modulation system of the narrowed digital system for the push-to-talk communication line for broadcasting service. The report assembles a procedure to shift from the FM system to the RZ SSB system and the technical condition of a transmitter and the specification of network quality to contribute to a smooth shift. The push-to-talk communication line for broadcasting service with the RZ SSB system is carried out according to "2-2 in Article 57 of Ordinance Regulating Radio Equipment ", "The examination standard of Radio Act" and ARIB STD-T62 " Real Zero Single Sideband Modulation System” The contents of this technical repot matches above fact.

　Keywords

Keyword	Description
Push-to-talk communication line for broadcasting service	The push-to-talk communication line for broadcasting service is used as communication means in the various program production in a time of peace. And at the time of urgent disasters, it is used as the most influential communication means that can transmit information exactly and surely. This enables to operate a large scale news system smoothly. The information such as the affliction situation and the damage scale at the time of the disaster is important in ensuring the security of the nation.
RZ SSB	Abbreviation of Real Zero Single Sideband. The phase clause (real zero line) of the RZ SSB signal on carrier wave is phase detected. After the detection, an information signal is extracted (demodulated) by appropriate signal processing. This is the narrowed digital communication system with channel separation of 6.25kHz.
Assigned frequency	The center frequency of a frequency band assigned to a radio station.

Keyword

Description

Push-to-talk communication line for broadcasting service

The push-to-talk communication line for broadcasting service is used as communication means in the various program production in a time of peace. And at the time of urgent disasters, it is used as the most influential communication means that can transmit information exactly and surely.

This enables to operate a large scale news system smoothly.

The information such as the affliction situation and the damage scale at the time of the disaster is important in ensuring the security of the nation.

RZ SSB

Abbreviation of Real Zero Single Sideband.

The phase clause (real zero line) of the RZ SSB signal on carrier wave is phase detected. After the detection, an information signal is extracted (demodulated) by appropriate signal processing. This is the narrowed digital communication system with channel separation of 6.25kHz.

Assigned frequency

The center frequency of a frequency band assigned to a radio station.

2. Amendment History

Ver.	Amendment or Enactment Date	Amendment summary
1.1	03.19.2008	Revisions to follow ARIB STD-T62 (revised from ver.1.3 to 2.0) due to the MIC Ordinance（revision of Regulations for Enforcement of Radio Law and revision of Ordinance Regulating Radio Equipment）and Notification No.88.
1.0	05.25.2004	Enactment

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