Overview of ARIB Standards (STD-31)｜Association of Radio Industries and Businesses

Overview of ARIB Standards (STD-31)

STD Number	RCR STD-31
Standard Name	Voice Communication Radio Equipment of a Business Activity (1mw and Less Conducted Power) for Land Mobile Radio Station
General Description	This standard specifies “Radio Equipment of Land Mobile Radio Station with 1mW or less antenna power (for business communication)”, performing chiefly voice communication, which is one of the specified low power radio stations regulated in the Article 49-14 of Ordinance Regulating Radio Equipment, or the radio stations regulated in the Article 58 of Ordinance Regulating Radio Equipment.

Ver.	Amendment or Enactment Date	Amendment summary
4.0	09.28.2020	Consolidated the specifications relating to the radio communication system of Land Mobile Radio Station with 1mW or less antenna power (for business voice communication). This system consists of base stations and mobile terminals. Previously, STD-31 was specifying only base stations, while STD-20 was specifying the land mobile radio stations (both base stations and mobile terminals).
3.1	11.30.2005	Revise definitions, tolerance limits, interim measure for the revision, and measurement method on spurious emission, etc. in accordance with amendment concerning technical criterion on Permissible Values for Spurious Emission, and so on.
3.0	05.31.2001	Revise items related to the change that Land Mobile Station is specified as Specified Low Power Radio Station separately.
2.0	02.02.1999	Secure consistency of notation on normative references, clarifying the original provisions.
1.1	02.28.1994	Change the limit on secondarily radiated emissions.
1.0	07.31.1992	Enactment