Supreme Court Act, 1959
R 385
Electronic Communications Act, 2005 (Act No. 36 of 2005)ICASANotice regarding Final Radio Frequency Assignment Plans for the Frequency Band 440 to 450 MHz in terms of Regulation 3 of the Radio Frequency Spectrum Regulations, 20155. Requirements for usage of radio frequency spectrum |
| 5.1 | This chapter covers the minimum key characteristics considered necessary in order to make the best use of the available frequencies. |
| 5.2 | The use of the band is limited to Fixed, Mobile and SPACE OPERATION (Earth-to-space) and SPACE RESEARCH (Earth-to-space) on Primary basis. |
| 5.3 | In some cases, a radio system conforming to the requirements of this RFSAP may require modifications if harmful interference is caused to other radio stations or systems. |
| 5.4 | The allocation of spectrum and shared services within these bands are found in the National Radio Frequency Plan (NRFP), and an extract of NRFP is shown in Appendix A. |
| 5.5 | Maximum radiated power is specified through the Type Approval process for the equipment used. |
| 5.6 | In addition to §5.5 above, the land mobile systems with channel bandwidths of 6.25 kHz, 12.5 kHz and 25 kHz, 50 kHz, 100 kHz, 150 kHz, and 200 kHz (the same requirements apply for channel bandwidth between 6.25 kHz and 200 kHz) should comply with requirements listed in ECC/DEC/ (19)02 15, including |
| 5.6.1 | Within the wanted channel at the carrier frequency, the effective radiated power used shall comply with the authorisation conditions. Normal effective radiated power emissions within the wanted channel do normally not exceed 40 dBm for user equipment and 53 dBm for base station equipment. |
| 5.6.2 | Transmitter Adjacent and Alternate Adjacent Channel Power: The power in the first two lower and upper adjacent channels, shall not exceed a value of 60 dBc below the transmitter output power without the need to be below -36 dBm ERP. These limits are valid for all base stations, user equipment and repeaters. |
| 5.6.3 | Transmitter Unwanted Emissions in The Spurious Domain: The unwanted emissions within the spurious domain during operation shall not exceed -36 dBm for frequencies up to 1 GHz and shall not exceed -30 dBm for frequencies above 1 GHz. In standby mode, the unwanted emissions shall not exceed -57 dBm for frequencies up to 1 GHz and shall not exceed -47 dBm for frequencies above 1 GHz. |
| 5.6.4 | Transmitter Intermodulation Attenuation: This requirement applies only to transmitters to be used in base stations or repeaters. Intermodulation attenuation is a measure of the capability of a transmitter to inhibit the generation of signals in its non-linear elements caused by the presence of the transmitter power and an interfering signal entering the transmitter via its antenna. In general, the intermodulation attenuation ratio shall be at least 40 dB for any intermodulation component. Note that the Administration may require a more stringent intermodulation attenuation requirement for base station equipment to be used in special service conditions, e.g., at sites where more than one transmitter will be in service, this is recommended to be at least 70 dB for any intermodulation component. |
| 5.6.5 | Transmitter Adjacent Channel Transient Power: Transient power is the power falling into adjacent spectrum due to switching the transmitter on and off. The transient power in the adjacent channels (e.g., caused by push-to-talk functionality) shall not exceed -60 dBc in the adjacent channels, or -50 dBc for equipment, without the need to be below -36 dBm. |
| 5.6.6 | Receiver Adjacent Channel Selectivity: The adjacent channel selectivity is the measure of the capability of the receiver of the land mobile system to receive a wanted modulated signal at the nominal operating frequency without exceeding a given degradation due to the presence of another land mobile system in assumed 25 kHz channels adjacent to the channel bandwidth for which the equipment is intended. E.g., the centre of an adjacent channel relative to the centre of the nominal channel is at +/- 62.5 kHz for a land mobile system operating with a 100 kHz channel bandwidth. The adjacent channel selectivity is described with the following table: |
| 5.6.7 | Receiver blocking: Blocking is the measure of the capability of the receiver to receive a wanted modulated signal without exceeding a given degradation due to the presence of an unwanted input signal at any frequencies outside of the wanted channel and the first two lower and upper adjacent. The blocking level shall not be less than -27 dBm. |
| 5.6.8 | The blocking level shall not be less than -27 dBm. It is possible that interference may still occur despite fulfilling the above requirements. If interference, guidance provided in Appendix B will may be followed. |
| 5.7 | In addition to §5.5 above, for Analogue and Digital Public Mobile Radio (PMR) in the band 446-446.2 MHz, the requirements listed in Government Gazette No 45690 dated 24 December 2021 16 (e.g., maximum radiated power 500 mW ERP) must be complied to. |
| 5.8 | In addition to 5.5, as per Government Gazette 42230, all transmissions from any low power wide area networks/burglar alarms and security related telemetry operating in 400 – 401 MHz band, should not exceed 100 mW (20 dBm) EIRP. |
| 5.9 | On a case-by-case basis, higher EIRP may be permitted. In some cases, a radio system conforming to the requirements of this RFSAP may require modifications if major interference is caused to other radio stations or systems. |
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| 15 | ECC Decision (19)02, Land mobile systems in the frequency ranges 68-87.5 MHz, 146-174 MHz, 406.1- 410 MHz, 410-430 MHz, 440-450 MHz and 450-470 MHz. Approved 8 March 2019 (https://docdb.cept.org/download/1455) |
