SIST ETS 300 433:2000

SLOVENSKI STANDARD
SIST ETS 300 433:2000
01-julij-2000
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Radio Equipment and Systems (RES); Double Side Band (DSB) and/or Single Side Band
(SSB) amplitude modulated Citizens Band (CB) radio equipment; Technical
characteristics and methods of measurement
Ta slovenski standard je istoveten z: ETS 300 433 Edition 1
ICS:
33.060.01 Radijske komunikacije na Radiocommunications in
splošno general
SIST ETS 300 433:2000 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST ETS 300 433:2000

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SIST ETS 300 433:2000
EUROPEAN ETS 300 433
TELECOMMUNICATION November 1995
STANDARD
Source: ETSI TC-RES Reference: DE/RES-00005
ICS: 33.020
radio, CB, measurement
Key words:
Radio Equipment and Systems (RES);
Double Side Band (DSB) and/or Single Side Band (SSB)
amplitude modulated Citizens' Band (CB) radio equipment;
Technical characteristics and methods of measurement
ETSI
European Telecommunications Standards Institute
ETSI Secretariat
F-06921 Sophia Antipolis CEDEX - FRANCE
Postal address:
650 Route des Lucioles - Sophia Antipolis - Valbonne - FRANCE
Office address:
c=fr, a=atlas, p=etsi, s=secretariat - secretariat@etsi.fr
X.400: Internet:
Tel.: +33 92 94 42 00 - Fax: +33 93 65 47 16
Copyright Notification: No part may be reproduced except as authorized by written permission. The copyright and the
foregoing restriction extend to reproduction in all media.
© European Telecommunications Standards Institute 1995. All rights reserved.
New presentation - see History box

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ETS 300 433: November 1995
Whilst every care has been taken in the preparation and publication of this document, errors in content,
typographical or otherwise, may occur. If you have comments concerning its accuracy, please write to
"ETSI Editing and Committee Support Dept." at the address shown on the title page.

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Contents
Introduction.7
1 Scope .9
2 Normative references.9
3 Definitions, abbreviations and symbols.10
3.1 Definitions .10
3.2 Abbreviations .10
3.3 Symbols .10
4 General.11
4.1 Presentation of equipment for testing purposes .11
4.2 Mechanical and electrical design.11
4.2.1 General.11
4.2.2 Controls .11
4.2.3 Marking.11
4.3 Interpretation of the measurement results.11
5 Technical characteristics.12
5.1 Common characteristics .12
5.1.1 Frequency band.12
5.1.2 Carrier frequencies and channel numbers.12
5.1.3 Channel spacing.12
5.1.4 Multi-channel equipment .12
5.1.5 Type of modulation.12
5.1.6 Push-to-talk (ptt) and voice activated switch.13
5.1.7 Combination with other equipment.13
5.2 Transmitter parameter limits.13
5.2.1 Frequency error.13
5.2.2 Transmitter Radio Frequency (RF) power.13
5.2.3 Adjacent channel power .13
5.2.4 Spurious emissions of the transmitter.14
5.2.5 Transient frequency behaviour of the transmitter.14
5.2.6 Synthesisers.15
5.3 Receiver parameter limits.15
5.3.1 Maximum usable sensitivity.15
5.3.2 Adjacent channel selectivity .15
5.3.3 Intermodulation response rejection .15
5.3.4 Spurious radiation .15
5.3.5 Spurious response rejection.16
6 Test conditions, power sources and ambient temperatures .16
6.1 Normal and extreme test conditions .16
6.2 Test power source .16
6.3 Normal test conditions .16
6.3.1 Normal temperature and humidity.16
6.3.2 Normal test power source .17
6.3.2.1 Mains voltage and frequency.17
6.3.2.2 Regulated lead-acid battery power sources on vehicles .17
6.3.2.3 Other power sources .17
6.4 Extreme test conditions .17
6.4.1 Extreme temperatures.17
6.4.2 Extreme test source voltages.17
6.4.2.1 Mains voltage.17
6.4.2.2 Regulated lead-acid battery power sources on vehicles .17
6.4.2.3 Power sources using other types of battery.17

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ETS 300 433: November 1995
6.4.2.4 Other power sources. 17
6.5 Procedure for tests at extreme temperatures . 18
7 General conditions. 18
7.1 Arrangements for test signals applied to the receiver input . 18
7.2 Receiver mute or squelch facility. 18
7.3 Receiver rated audio output power . 18
7.4 Transmitter rated RF power . 18
7.5 Normal test modulation . 18
7.5.1 DSB modulation. 18
7.5.2 SSB modulation . 19
7.6 Artificial antenna. 19
7.7 Test fixture . 19
7.8 Arrangement for test signals at the input of the transmitter . 20
7.9 Test site and general arrangements for radiated measurements . 20
8 Method of measurement for transmitter parameters. 20
8.1 Frequency error. 20
8.1.1 Definition. 20
8.1.2 Method of measurement. 20
8.2 Transmitter RF power . 20
8.2.1 Definition. 20
8.2.2 Method of measurement (for equipment other than equipment with
integral antenna only) . 21
8.2.3 Method of measurement for equipment with integral antenna . 21
8.3 Adjacent channel power. 22
8.3.1 Definition. 22
8.3.2 Method of measurement. 22
8.4 Spurious emissions . 22
8.4.1 Definition. 22
8.4.2 Method of measuring the power level in a specified
load,((subclause 8.4.1, a)). 23
8.4.3 Method of measuring the effective radiated power,((subclause 8.4.1 b)). 23
8.4.4 Method of measuring the effective radiated power,((subclause 8.4.1 c)). 24
8.5 Transient frequency behaviour of the transmitter. 24
8.5.1 Definitions . 24
8.5.2 Method of measurement. 25
9 Methods of measurement for receiver parameters . 26
9.1 Maximum usable sensitivity. 27
9.1.1 Definition. 27
9.1.2 Method of measurement. 27
9.2 Adjacent channel selectivity . 27
9.2.1 Definition. 27
9.2.2 Method of measurement. 27
9.3 Inter-modulation response rejection. 28
9.3.1 Definition. 28
9.3.2 Method of measurement. 28
9.4 Spurious radiation . 28
9.4.1 Definition. 28
9.4.2 Method of measuring the power level in a specified
load,((subclause 9.4.1 a)). 29
9.4.3 Method of measuring the effective radiated power,((subclause 9.4.1 b)). 29
9.4.4 Method of measuring the effective radiated power,((subclause 9.4.1 c)). 30
9.5 Spurious response rejection. 30
9.5.1 Definition. 30
9.5.2 Method of measurement. 30
10 Measurement uncertainty . 30
Annex A (normative): Radiated measurement . 32
A.1 Test sites and general arrangements for measurements involving the use of radiated fields . 32

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A.1.1 Outdoor test site.32
A.1.1.1 Test site for hand-portable stations.32
A.1.2 Test antenna.33
A.1.3 Substitution antenna .33
A.1.4 Optional additional indoor site.34
A.2 Guidance on the use of radiation test sites .34
A.2.1 Measuring distance.35
A.2.2 Test antenna.35
A.2.3 Substitution antenna .35
A.2.4 Artificial antenna .35
A.2.5 Auxiliary cables .35
A.3 Further optional alternative indoor test site using an anechoic chamber .35
A.3.1 Example of the construction of a shielded anechoic chamber .35
A.3.2 Influence of parasitic reflections in anechoic chambers .36
A.3.3 Calibration of the shielded anechoic chamber.37
Annex B (normative): Specification for adjacent channel power measurement arrangements .39
B.1 Power measuring receiver specification.39
B.1.1 IF filter.39
B.1.2 Variable attenuator.40
B.1.3 Rms value indicator .40
B.1.4 Oscillator and amplifier .40
History.41

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Foreword
This European Telecommunication Standard (ETS) was produced by the Radio Equipment and Systems
(RES) Technical Committee of the European Telecommunications Standards Institute (ETSI).
Every ETS prepared by ETSI is a voluntary standard. This ETS contains text concerning the type approval
of equipment to which it relates. This text does not make this ETS mandatory in its status as a standard.
However, this ETS can be referenced, wholly or in part, for mandatory application by decisions of
regulatory bodies.
Transposition dates
Date of adoption of this ETS: 29 September 1995
Date of latest announcement of this ETS (doa): 28 February 1996
Date of latest publication of new National Standard
or endorsement of this ETS (dop/e): 31 August 1996
Date of withdrawal of any conflicting National Standard (dow): 31 August 1996
The national regulations on Citizens' Band (CB) equipment that permit the use of other types of
modulation or power levels will not necessarily be affected by the adoption of this ETS.
Introduction
This ETS is intended to specify the minimum performance and the methods of measurement of CB
Double Side Band (DSB) and/or Single Side Band (SSB) amplitude modulated radio equipment as
specified in the Scope.
Clause 5 provides the corresponding limits. These limits have been chosen to ensure an acceptable grade
of service and to minimise harmful interference to other equipment and services.
Administrative arrangements (e.g. for type approval, marking, antennas), and conditions for the use of CB
DSB and/or SSB amplitude modulated radios are to be determined by the national regulatory authorities.
This ETS may be used by European notified accredited test laboratories for the assessment of the
performance of the equipment. In order to avoid any ambiguity in that assessment, this standard contains
instructions for the presentation of equipment for type testing purposes (clause 4), conditions (clauses 6
and 7) and measurement methods (clauses 8 and 9).
This standard was drafted on the assumption that:
a) the type test measurements would be performed only once in one of the accredited test
laboratories, and then accepted by the various authorities in order to obtain type approval;
b) if equipment available on the market is required to be checked it should be tested in accordance
with the methods specified in this ETS.

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1 Scope
This European Telecommunications Standard (ETS) applies to Double Side Band (DSB) and/or Single
Side Band (SSB) amplitude modulated Citizen's Band (CB) radio equipment operating in the frequency
band 26,960 MHz to 27,410 MHz with a channel spacing of 10 kHz, and intended for analogue speech
and/or data transmission.
This ETS covers the minimum characteristics considered necessary in order to make the best use of the
available frequencies. It does not necessarily include all the characteristics that may be required by a user,
nor does it necessarily represent the optimum performance achievable.
This ETS covers base stations, mobile stations and two categories of hand-portable stations.
This ETS is complementary to ETS 300 135 [1] which concerns angle modulated CB radio equipment
(CEPT PR 27).
Any CB equipment covered by this ETS that can also work with angle modulation is also required to meet
ETS 300 135 [1].
This ETS is based upon existing national standards.
This ETS applies to equipment with a socket for an external antenna and to equipment with an integral
antenna.
In the case of equipment that is intended for use with either an integral antenna or an external antenna,
the equipment is specified to be measured as equipment intended for use with an external antenna and
specified to meet the appropriate limits. In addition to this the following characteristics of the transmitter
and receiver are specified to be measured as for equipment for use with an integral antenna and the
appropriate limits are defined:
- transmitter carrier power;
- spurious emissions of the transmitter;
- spurious radiation of the receiver.
2 Normative references
This ETS incorporates, by dated or undated reference, provisions from other publications. These
normative references are cited at the appropriate places in the text and relate to the publications listed
hereafter. For dated references, subsequent amendments to or revisions of any of these publications
apply to this standard only when incorporated in it by amendment or revision. For undated references, the
latest edition of the publication referred to applies.
[1] ETS 300 135 (1991): "Radio Equipment and Systems (RES); Angle-modulated
Citizens' Band radio equipment (CEPT PR 27 Radio Equipment). Technical
characteristics and methods of measurement".
[2] CISPR Publication No 16-1 (1993): "Specification for radio disturbance and
immunity measuring apparatus and methods; Part 1: Radio disturbance and
immunity measuring apparatus".
[3] CCITT Recommendation O.41 (1988): "Psophometer for use on telephone-type
circuits".
[4] ETR 028 (1992): "Radio Equipment and Systems (RES); Uncertainties in the
measurement of mobile radio equipment characteristics".

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3 Definitions, abbreviations and symbols
3.1 Definitions
For the purposes of this ETS, the following definitions apply:
base station: Equipment fitted with an antenna socket, for use with an external antenna, and intended for
use in a fixed location.
mobile station: Mobile equipment fitted with an antenna socket, for use with an external antenna,
normally used in a vehicle or as a transportable station.
hand-portable station: Equipment fitted either with an antenna socket, an integral antenna, or both,
normally used on a stand-alone basis, to be carried on a person or held in the hand.
integral antenna: An antenna designed to be connected to the equipment without the use of a 50 Ω
external connector and considered to be part of the equipment. An integral antenna may be fitted
internally or externally to the equipment.
Double Side Band (DSB) modulation: DSB amplitude modulation (A3E).
Single Side Band (SSB) modulation: SSB amplitude modulation with suppressed carrier (J3E), using
the Upper Side Band (USB) or the Lower Side Band (LSB).
3.2 Abbreviations
For the purposes of this ETS, the following abbreviations apply:
ac alternating current
A3E DSB amplitude modulation
CB Citizens' Band
dBA relative sound level in dB incorporating A-weighting curve
DSB Double Side Band
emf electro-motive force
IF Intermediate Frequency
J3E SSB amplitude modulation with suppressed carrier
LSB Lower Side Band
PEP Peak Envelope Power
ptt push-to-talk
RF Radio Frequency
rms root mean square
SINAD SND/ND
SND/N (Signal + Noise + Distortion)/(Noise)
SND/ND (Signal + Noise + Distortion)/(Noise + Distortion)
SSB Single Side Band
USB Upper Side Band
3.3 Symbols
For the purposes of this ETS, the following symbols apply:
E reference field strength, (see annex A)
o
R reference distance, (see annex A)
o

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4 General
4.1 Presentation of equipment for testing purposes
The manufacturer shall provide a production model of the equipment for type testing.
Tests shall be carried out on the highest and lowest channel within the switching range of the equipment
and on a channel near the middle of the switching range. The switching range of the receiver and
transmitter shall be declared by the manufacturer.
NOTE: The switching range is the maximum frequency range over which the receiver or the
transmitter can be operated without reprogramming or realignment.
In the case of equipment fitted with one channel only, all tests are carried out on that channel.
In the case of equipment fitted with two channels, all tests are carried out on both channels.
4.2 Mechanical and electrical design
4.2.1 General
The equipment submitted by the manufacturer or his representative, shall be designed, constructed and
manufactured in accordance with sound engineering practice, and with the aim to minimise harmful
interference to other equipment and services.
4.2.2 Controls
Those controls which, if maladjusted might increase the interfering potentialities of the equipment or
improper functioning of the transceiver, shall not be accessible to the user.
4.2.3 Marking
The marking shall be in accordance with the requirements of the national regulatory authorities.
4.3 Interpretation of the measurement results
The interpretation of the results recorded in a test report when making the measurements described in
this ETS shall be as follows:
a) the measured value related to the corresponding limit shall be used to decide whether an
equipment meets the minimum requirements of this ETS;
b) the actual measurement uncertainty for each particular measurement shall be included in the test
report;
c) the values, of the actual measurement uncertainty shall be, for each measurement, equal to or less
than the figures given in clause 10 (table of measurement uncertainty).

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5 Technical characteristics
5.1 Common characteristics
5.1.1 Frequency band
The maximum operating frequency band shall be from 26,960 MHz to 27,410 MHz. Equipment may
operate on one or more channels up to a maximum of 40 channels.
The operating frequency band specified in this ETS is currently allocated for CB equipment in most
European countries. This fact does not prevent the upholding of the other 27 MHz frequency bands
allocated to CB equipment in some countries, nor future extensions which could be decided by
CEPT/ERC or by the national regulatory authorities.
5.1.2 Carrier frequencies and channel numbers.
The allowed carrier frequencies and associated channel numbers are given in table 1. Transmission and
reception shall take place on the same channel (single frequency simplex mode).
Table 1: Carrier frequency and channel number
Carrier frequencies Channel Carrier frequencies Channel Carrier frequencies Channel
(MHz) number (MHz) number (MHz) number
26,965 1 27,135 15 27,295 29
26,975 2 27,155 16 27,305 30
26,985 3 27,165 17 27,315 31
27,005 4 27,175 18 27,325 32
27,015 5 27,185 19 27,335 33
27,025 6 27,205 20 27,345 34
27,035 7 27,215 21 27,355 35
27,055 8 27,225 22 27,365 36
27,065 9 27,235 23 27,375 37
27,075 10 27,245 24 27,385 38
27,085 11 27,255 25 27,395 39
27,105 12 27,265 26 27,405 40
27,115 13 27,275 27
27,125 14 27,285 28
5.1.3 Channel spacing
The channel spacing shall be 10 kHz.
5.1.4 Multi-channel equipment
Multi-channel equipment may be used, provided that such equipment is only designed for the channels
indicated in subclause 5.1.2.
Precautions shall be taken against extension of the usable frequency range by the user, e.g. the physical
and electrical design of the channel switching system shall permit operation in not more than the channels
indicated in subclause 5.1.2.
5.1.5 Type of modulation
Equipment only capable of using A3E or J3E shall be tested according to this ETS by using the
appropriate type of modulation.
Equipment capable of using both A3E and J3E shall be tested to this ETS in both modes of modulation.

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5.1.6 Push-to-talk (ptt) an
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