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Contact UsOverview of ARIB Standards (STD-20)
1. Overview
| STD Number | RCR STD-20 |
|---|---|
| Standard Name | Voice Communication Radio Equipment for Specified Low Power Radio Station |
| General Description | This standard specifies the “Voice Communication Radio Equipment” for communication mainly by voice of the specified low power radio station in Article 6 of the Regulations for Enforcement of the Radio Act. |
2. Amendment History
| Ver. | Amendment or Enactment Date | Amendment summary |
|---|---|---|
| 5.1 | 10.29.2021 | Reflected the revision of the frequencies used by the radio facilities which do not require a transmission time restricting device. Also added the conditions for radio facilities when carrier sensing is not required. |
| 5.0 | 09.28.2020 | Reflected the increase of the number of channels by the narrowed bandwidth, as well as the revision of the antenna power specifications (for the digital systems using certain frequencies for the channels with the narrowed bandwidth). Simplified the specification coverage relationship with STD-31 by transferring to STD-31 the parts concerning the land mobile radio stations for voice communication radio equipment of business activities. Changed the configuration; named as Part 1 the STD-20 Ver.4.1 minus the portion transferred to STD-31, and added as Part 2 the 4FSK digital system with the channel interval of 6.25kHz (narrowed bandwidth). |
| 4.1 | 11.30.2005 | Associated with the revision of the technical standards in accordance with the permissible values for intensity of spurious emission (1) Definition of spurious emission etc. (2) Permissible values of spurious emission (3) Transitional measure (4) Revision of the measurement method, etc. |
| 4.0 | 05.30.2001 | Revision due to the addition of the 413MHz band and 454MHz band |
| 3.0 | 07.25.2000 | Adding the type of emission |
| 2.0 | 02.02.1999 | Revised the memory of the call name to interference prevention function |
| 1.4 | 11.04.1994 | Revised some of the technical conditions of the carrier sensing |
| 1.3 | 02.28.1994 | Revision of limit on secondary radiated emissions |
| 1.2 | 10.24.1991 | Changing the Note of the line connection procedure |
| 1.1 | 06.10.1991 | Adding the condition of transmit power for the radio facilities which do not require a transmission time restricting device (1mW) |
| 1.0 | 04.25.1989 | Enactment |
