Electronic Communications Act, 2005 (Act No. 36 of 2005)ICASANotice regarding Final Radio Frequency Assignment Plans for the Frequency Band 406.1 to 410 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 Radio Astronomy services. |
| 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 | The Technical Requirements for land mobile systems with channel bandwidth of 6.25 kHz, 12.5 kHz and 25 kHz, 50 kHz, 100 kHz, 150 kHz, and 200 kHz, as well as the technical requirements for land mobile systems operating with channel bandwidth between 6.25 kHz and 200 kHz are provided in ECC/DEC/ (19)02 6. A summary follows: |
| 5.5.1 | Adjacent and Alternate Channel Power |
Within the wanted channel, the effective radiated power used shall comply with the authorisation conditions. Normal effective radiated power (ERP) emissions within the wanted channel do normally not exceed 40 dBm for user equipment and 53 dBm for base station equipment.
| 5.5.2 | Adjacent and Alternate Adjacent Channel Power |
The power in the lower and upper adjacent channels, as well as in the lower and upper alternate 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.
| 5.5.3 | 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.
| 5.5.4 | 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 ICASA 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.
| 5.5.5 | 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.
| 5.5.6 | Receiver Requirements |
| 5.5.6.1 | 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.
| 5.5.6.2 | 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 lower and upper adjacent and alternate adjacent channels (see “Adjacent channel selectivity” above).
The blocking level shall not be less than -27 dBm.
| 5.6 | Maximum radiated power: |
| 5.6.1 | Base Station transmissions should not exceed total ERP of 53 dBm per BS7. |
User equipment transmissions should not exceed total ERP of 40 dBm.
| 5.6.2 | On a case-by-case basis, higher EIRP may be permitted if acceptable technical justification is provided. |
| 5.6.3 | Where appropriate subscriber terminal station should comply with the technical specification outlined under EN 300 394-18 (for TETRA), or EN 300 392-2 9 / TS 100 392-2 10 (for TEDS), whichever is appropriate. |
| 5.7 | 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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| 6 | ECC/DEC/ (19)02, ECC Decision of 8 March 2019 on 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, 8 March 2019. https://docdb.cept.org/download/1455 |
| 7 | 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 |
| 8 | ETSI EN 300 394-1 V3.3.1 (2015-04) Terrestrial Trunked Radio (TETRA); Conformance testing specification; Part 1: Radio (available online at https://www.etsi.org/deliver/etsi_en/300300_300399/30039401/03.03.01_60/en_30039401v030301p.pdf) or later |
| 9 | ETSI EN 300 392-2 V3.8.1 (2016-08) Terrestrial Trunked Radio (TETRA); Voice plus Data (V+D); Part 2: Air Interface (AI). (Latest version applies). |
| 10 | ETSI TS 100 392-2 V3.9.1 (2019-01) Terrestrial Trunked Radio (TETRA); Voice plus Data (V+D); Part 2: Air Interface (AI) (available online at https://www.etsi.org/deliver/etsi_ts/100300_100399/10039202/03.09.01_60/ts_10039202v030901p.pdf ) or later |