1988 No. 69*1* STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983
*1* Notified in the Commonwealth of Australia Gazette on 29 April 1988. 1988 No. 69 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - LONG TITLE
STANDARD FOR RADIOCOMMUNICATIONS EQUIPMENT USED IN THE
CITIZEN BAND RADIO SERVICE AND OPERATING ON FREQUENCIES
EXCEEDING 30 MHz
1988 No. 69 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - PART 1
PART 1-PRELIMINARY
1988 No. 69 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - REG 1
Citation
1. This standard may be cited as "Ministerial Standard 250".
1988 No. 69 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - REG 2
Commencement
2. This standard shall come into operation on 1 May 1988.
1988 No. 69 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - REG 3
Interpretation
3. (1) In this standard unless the contrary intention appears-
"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 services used for personal radiotelephone communications
over short distances within Australia or the Territories of Australia;
"dB" means decibel;
"dBm" means decibels 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;
"F3E" means an emission whose basic characteristic is that of a frequency
modulated carrier on a single channel containing primarily analogue telephony
information;
"G3E" means an emission whose basic characteristic is that of a phase
modulated carrier on a single channel containing primarily analogue telephony
information;
"Hz" means hertz;
"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 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 the 16 kHz band centered on the
radiocommunications transmitter operating carrier frequency;
"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;
"receiver" has the same meaning as in section 3 of the Radiocommunications
Act 1983;
"repeater station" means a radiocommunications transmitter and receiver
established at a fixed location for the reception and retransmission of radio
signals;
"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;
"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. 69 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - REG 4
Devices to which this standard applies
4. (1) Subject to sub-clause 4 (2) and 4 (3) this standard applies to:
(a) CB radios operating on frequencies exceeding 30 MHz; and
(b) multi-role devices.
(2) This standard shall not apply to radiocommunications transmitters or
receivers used or intended for use as repeater stations in the Citizen Band
Radio Service.
(3) 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. 69 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - PART 2
PART 2-GENERAL
1988 No. 69 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - REG 5
Equipment markings
5. (1) Subject to sub-clause 5(3), there shall be displayed on the 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) The requirement of 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. 69 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 requirements 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. 69 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - REG 7
Conditions of operation
7. The requirements of Parts 3 and 4 shall be met by a device when it
operates at:
(1) ambient temperatures of between 0 degrees C and 55 degrees C inclusive;
and
(2) primary supply voltages within +-10% of that declared by the
manufacturer.
1988 No. 69 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - PART 3
PART 3-TRANSMITTER
1988 No. 69 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 exceeding 30 MHz.
1988 No. 69 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - REG 9
Emission modes
9. (1) Subject to sub-clause 9 (2), a transmitter shall be capable of
operation only in:
(a) the G3E emission mode; or
(b) the F3E emission mode with a nominal 6 dB per octave pre-emphasis
characteristic in the audio pass band.
(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. 69 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. 69 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - REG 11
Frequency error
11. The carrier frequency error of a transmitter shall not exceed +-3.0 kHz.
1988 No. 69 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. 69 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - REG 13
Carrier power
13. The output carrier power of a transmitter shall not exceed 5 W.
1988 No. 69 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - REG 14
Modulation limiting
14. Under any modulation conditions the maximum frequency deviation of a
transmitter shall not exceed +-5 kHz.
1988 No. 69 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - REG 15
Out-of-band emission suppression
15. The power of each out-of-band emission from a transmitter shall not
exceed:
(1) 17 dBm where the frequency of the emission differs from the operating
carrier frequency by greater than 8 kHz but not greater than 16 kHz;
(2) 7 dBm where the frequency of the emission differs from the operating
carrier frequency by greater than 16 kHz but not greater than 25 kHz;
(3) -9 dBm where the frequency of the emission differs from the operating
carrier frequency by greater than 25 kHz but not greater than 50 kHz;
(4) -23 dBm where the frequency of the emission differs from the operating
carrier frequency by greater than 50 kHz.
1988 No. 69 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - REG 16
Spurious emissions
16. The power of each spurious emission from a transmitter shall not exceed
-30 dBm.
1988 No. 69 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - PART 4
PART 4-RECEIVER
1988 No. 69 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - REG 17
Conducted spurious signals
17. The power of each spurious signal at the antenna terminal of a devise
which is a receiver shall not exceed -57 dBm.
1988 No. 69 STANDARD UNDER THE RADIOCOMMUNICATIONS ACT 1983 - SCHEDULE
SCH
SCHEDULE
Item 1 THE FORM OF A COMPLIANCE STATEMENT (Clause 5)
"COMPLIES WITH MS250
TYPE APPROVAL NO. . ."
Item 2 NOMINAL CARRIER FREQUENCY (Clause 10)
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-- Channel Carrier
Frequency
(MHz) Channel Carrier
Frequency
(MHz) Channel
Carrier Frequency (MHz)
------------------------------------------------------------------------------
-- 1 476.425 15 476.775 29
477.125 2 476.450 16 476.800 30
477.150 3 476.475 17 476.825 31
477.175 4 476.500 18 476.850 32
477.200 5 476.525 19 476.875 33
477.225 6 476.550 20 476.900 34
477.250 7 476.575 21 476.925 35
477.275 8 476.600 22 476.950 36
477.300 9 476.625 23 476.975 37
477.325 10 476.650 24 477.000 38
477.350 11 476.675 25 477.025 39
477.375 12 476.700 26 477.050 40
477.400 13 476.725 27 477.075
14 476.750 28 477.100
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