1988 No. 70*1* STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983
*1* Notified in the Commonwealth of Australia Gazette on 29 April 1988. 1988 No. 70 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - LONG TITLE
FOR RADIOCOMMUNICATIONS EQUIPMENT USED IN THE CITIZEN BAND RADIO SERVICE AND OPERATING ON FREQUENCIES NOT EXCEEDING 30 MHz 1988 No. 70 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - PART I
PART I-PRELIMINARY
1988 No. 70 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - REG 1
Citation
1. This standard may be cited as "Ministerial Standard 312". 1988 No. 70 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - REG 2
Commencement
2. This standard shall come into operation on 1 May 1988. 1988 No. 70 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - REG 3
Interpretation
3. (1) In this standard unless the contrary intention appears- "A3E" means an emission whose basic characteristic is that of a double sideband, amplitude modulated single channel carrier containing primarily analogue telephony information; "ALC" means automatic level control; "ALC threshold" means the operating point on a transmitter output power characteristic at which an increase in the modulating signal level does not cause a proportional increase in output power; "CB radio" means a radiocommunications transmitter or receiver used or intended for use only in the Citizen Band Radio Service; "Citizen Band Radio Service" means a two-way radiocommunication service within the mobile service used for personal radiotelephone communications over short distances within Australia or the Territories of Australia; "dB" means decibel; "dBm" means decibel relative to one milliwatt; "device" means a device to which this standard applies; "emission" means radiation produced, or the production of radiation, by a radiocommunications transmitter; "Hz" means Hertz; "J3E" means an emission whose basic characteristic is that of a single sideband, amplitude modulated suppressed carrier on a single channel containing primarily analogue telephony information; "kHz" means Kilohertz; "MHz" means Megahertz; "multi-role device" means a device which is or includes a radiocommunications transmitter and which is capable of operation on: (a) frequencies not exceeding 30 MHz allocated to the Citizen Band Radio Service; and (b) any other frequencies; "out-of-band emission" means an emission which results from the modulation process on a frequency or frequencies outside the permitted bandwidth, but excluding spurious emissions; "permitted bandwidth" means: (i) the 8 kHz band centred on the operating carrier frequency, where the transmitter operates in the A3E emission mode; or (ii) the 4 kHz band centred on a frequency 2 kHz above the suppressed operating carrier frequency, where the transmitter operates in the J3E upper sideband emission mode; or (iii) the 4 kHz band centred on a frequency 2 kHz below the suppressed operating carrier frequency, where the transmitter operates in the J3E lower sideband emission mode; "pX" means peak envelope power; "radiation" means the outward flow of energy from any source by means of radio transmission; "radio transmission" has the same meaning as in section 3 of the Radiocommunications Act 1983; "radiocommunications transmitter" has the same meaning as in section 3 of the Radiocommunications Act 1983; "rated peak envelope power" means the peak envelope power at the transmitter output with a modulating signal comprising two non-harmonically related sinusoids, in the frequency range 300 to 3000 Hz inclusive, at a level of modulation so that: (a) the transmitter is operating 10 dB above the ALC threshold; and (b) the radio frequency sidebands corresponding to the modulating signals are of equal level; "receiver" has the same meaning as in section 3 of the Radiocommunications Act 1983; "reference sideband power" means the level of radio frequency sidebands produced when a transmitter is operating at rated peak envelope power; "spurious emission" means an emission on a frequency or frequencies which are outside the permitted bandwidth and the level of which may be reduced without affecting the corresponding transmission of information; "standard device" means a device which complies with this standard; "standard modulating signal" means a modulating signal comprising two non-harmonically related sinusoids, in the frequency range 300 to 3000 Hz inclusive, at a level of modulation 20 dB below that required to establish rated peak envelope power; "transmitter" means a radiocommunications transmitter; "unwanted emission" means a spurious emission or an out-of-band emission; "W" means Watts; and "degrees C" means degrees Celsius. 1988 No. 70 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - PART 2
PART 2-GENERAL
1988 No. 70 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - REG 4
Devices to which this standard applies
4. (1) Subject to sub-clause 4 (2) this standard applies to: (a) CB radios operating on frequencies not exceeding 30 MHz; and (b) multi-role devices. (2) Parts 3 and 4 of this standard do not apply to a multi-role device in respect of its operation in services other than the Citizen Band Radio Service. 1988 No. 70 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - REG 5
Equipment markings
5. (1) Subject to sub-clause 5 (3), there shall be displayed on a device- (a) a compliance statement in the form set out in item 1 of the schedule- (i) indicating that the device complies with this standard; and (ii) citing the type approval number shown on the compliance statement certificate issued in respect of the device under Section 12 of the Radiocommunications Act 1983; and (b) its type or model designation which shall be distinctively different from that of imported equipment requiring modification before it complies with this standard. (2) A statement or marking displayed on a device in accordance with sub-clause 5 (1) shall be clearly visible on the exterior surface of the device, indelible, tamper proof and affixed in such a manner as not to be removeable except by destruction or defacing. (3) Paragraph 5 (1) (a) does not apply to a device unless the importer, manufacturer or supplier of the device, as the case may be, has been issued with a compliance statement certificate in respect of the device. 1988 No. 70 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - REG 6
Adjustment mechanisms
6. (1) For the purpose of this clause an 'adjustment mechanism' is a mechanism which enables the operation of a standard device to be altered so that the device contravenes the requirement of this standard. (2) Any adjustment mechanism shall be contained within the housing of a device and shall be accessible only with the use of tools such as screwdrivers and spanners. 1988 No. 70 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - REG 7
Conditions of operation
7. (1) The requirements of Parts 3 and 4 shall be met by a device when it operates at: (a) ambient temperatures of between 0 degrees C and 55 degrees C inclusive; and (b) primary supply voltages within +-10% of that declared by the manufacturer. 1988 No. 70 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - PART 3
PART 3-TRANSMITTER
1988 No. 70 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - REG 8
Application
8. In this part 'transmitter' means a device which is a radiocommunications transmitter operating on frequencies not exceeding 30 MHz. 1988 No. 70 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - REG 9
Emission modes
9. (1) Subject to subclause 9 (2), a transmitter shall be capable of operation only in the A3E or J3E emission modes. (2) Where the type of information to be transmitted is other than speech telephony the duration of any such transmission shall not exceed 3 seconds in any 60 second interval. 1988 No. 70 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - REG 10
Nominal carrier frequency
10. A transmitter shall, subject to clause 11, be capable of operating only on a channel designated in the first, third or fifth column of the table set out in item 2 of the schedule, being a channel whose nominal carrier frequency is specified opposite that channel. 1988 No. 70 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - REG 11
Frequency error
11. The carrier frequency error of a transmitter shall not exceed +-1.4 kHz. 1988 No. 70 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - REG 12
Transients
12. Emissions from a transmitter shall be inhibited until the operating carrier frequency has stabilized within the limit specified in clause 11. 1988 No. 70 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - REG 13
Carrier power
13. The output carrier power of a transmitter operating in the A3E emission mode shall not exceed 4 W. 1988 No. 70 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - REG 14
Rated peak envelope power
14. The rated peak envelope power of a transmitter operating in the J3E emission mode shall not exceed 12 W. 1988 No. 70 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - REG 15
Modulation limiting
15. Where a transmitter operates in the A3E emission mode the depth of amplitude modulation under any modulation conditions shall not exceed 100%. 1988 No. 70 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - REG 16
Automatic level control
16. Where a transmitter operates in the J3E emission mode a step increase of 20 dB in the level of standard modulating signal shall not cause- (1) any transient pX to exceed 12 W by more than 1 dB; (2) where the transient pX exceeds 12 W, the time taken for the output power to reduce within 0.5 dB of the steady-state pX to exceed 10 milliseconds. 1988 No. 70 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - REG 17
Out-of-band emission suppression
17. Where a transmitter operates in the A3E emission mode the power of each out-of-band emission shall not exceed: (a) 11 dBm, where the frequency of the emission differs from the operating carrier frequency by greater than 4 kHz but not greater than 8 kHz; (b) 1 dBm, where the frequency of the emission differs from the operating carrier frequency by greater than 8 kHz but not greater than 20 kHz; (c) -24 dBm, where the frequency of the emission differs from the operating carrier frequency by greater than 20 kHz. 1988 No. 70 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - REG 18
Spurious emissions
18. The power of each spurious emission from a transmitter operating in the A3E emission mode shall not exceed -26 dBm. 1988 No. 70 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - REG 19
Unwanted emission suppression
19. Where a transmitter operates in the J3E emission mode the power of each out-of-band emission shall be attenuated relative to the reference sideband power of the transmitter by at least: (a) 24 dB, where the frequency of the emission differs from the centre frequency of the permitted bandwidth by greater than 2 kHz but not greater than 6 kHz; (b) 34 dB, where the frequency of the emission differs from the centre frequency of the permitted bandwidth by greater than 6 kHz but not greater than 10 kHz; (c) 59 dB, where the frequency of the emission differs from the centre frequency of the permitted bandwidth by greater than 10 kHz. 1988 No. 70 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - PART 4
PART 4-RECEIVER
1988 No. 70 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - REG 20
Conducted spurious signals
20. The power of each spurious signal from a device which is a receiver shall not exceed -57 dBm. 1988 No. 70 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - SCHEDULE
SCH
SCHEDULEItem 1: THE FORM OF A COMPLIANCE STATEMENT (Clause 5) "COMPLIES WITH MS312 TYPE APPROVAL NO . . . . . ." Item 2: NOMINAL CARRIER FREQUENCY (Clause 10) ------------------------------------------------------------------------------ -- Channel Carrier Frequency (MHz) Channel Carrier Frequency (MHz) Channel Carrier Frequency (MHz) ------------------------------------------------------------------------------ -- 1 26.965 15 27.135 29 27.295 2 26.975 16 27.155 30 27.305 3 26.985 17 27.165 31 27.315 4 27.005 18 27.175 32 27.325 5 27.015 19 27.185 33 27.335 6 27.025 20 27.205 34 27.345 7 27.035 21 27.215 35 27.355 8 27.055 22 27.225 36 27.365 9 27.065 23 27.255 37 27.375 10 27.075 24 27.235 38 27.385 11 27.085 25 27.245 39 27.395 12 27.105 26 27.265 40 27.405 13 27.115 27 27.275 14 27.125 28 27.285 ------------------------------------------------------------------------------ --