The Info-communications Media Development Authority of Singapore (IMDA) has published a new version of the technical specification for Short Range Devices (SRD) based on CE RED standards.
This Specification defines the minimum technical requirements for Short Range Devices (SRD) to operate in one of the authorized frequency bands or frequencies, and transmit within the corresponding output power levels given in Table 1 and 2. 1.2 under the new guideline.
This Specification allows SRDs to share the use of spectrum on a non-exclusive manner, based on technical usage conditions and where necessary, requiring spectrum access mechanisms such as duty cycle, frequency hopping, detect and avoid, adaptive power control and listen before talk. It provides flexibility for deployment of a variety of SRD applications, catering to specific (common) usage scenarios as well as non-specific usage scenarios. 1.3 SRDs may be fixed, mobile or portable stations that come with a radio frequency output connector and dedicated antenna or an integral antenna. Applications include alarms, identification systems, radio-detection, vehicle radar systems, wireless local area networks, remote controls, telecom, telemetry and on-site paging systems. These devices may employ different types of modulation and may have speech application.
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