TELECOMMUNICATIONS STANDARD ADVISORY …tel_archives.ofca.gov.hk/en/ad-comm/tsac/ts-paper/ts2005p7.pdf · 6. Radiocommunications apparatus covered by the Order is classified under

For discussion only TSAC Paper No. 7/2005

TSAC Paper No. 7/2005January 2005

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TELECOMMUNICATIONS STANDARD ADVISORY COMMITTEE

Revision to HKTA 1035Performance Specification for Low Power Device

修修修修訂訂訂訂 HKTA 1035 有有有有關關關關的的的的小小小小功功功功率率率率器器器器件件件件的的的的性性性性能能能能規規規規格格格格

Introduction

This paper proposes the adoption of Issue 3 of the HKTA 1035specification, entitled �Performance Specification for Low Power Device�, wherenew frequency bands are to be added for model flying aircraft apparatus andautomotive radar systems.

Background

2. Due to rapid technological advancement and market developments, thereis a strong demand for the use of new radiocommunications equipment on alicence-exempted basis. Therefore, it is considered appropriate to exempt somenew apparatus operating within the new frequency bands under theTelecommunications (Telecommunications Apparatus)(Exemption from Licensing)Order (Order).

3. There is a demand for frequencies for air modelling from the modelcontrol aircraft hobbyists in Hong Kong. It is noted that other countries�spectrum regulators, such as those in the USA, Canada, Australia and mostEuropean countries, have already adopted frequencies in the 35 MHz, 40 MHzand 72 MHz for air modelling on a licence-exempted basis. It may be suitable toallocate these bands for air modelling in Hong Kong as well.

4. In Europe, Japan and the USA, the 76 � 77 GHz band has been allocatedfor automotive radar systems. These radar systems are devices that can detectconditions within 100 metres of a vehicle using radio waves and their mainapplication is to improve vehicle safety. It is envisaged that the use of theseautomotive radar systems in the said band will become popular in Hong Kong.



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Summary of the Proposed Revisions to HKTA 1035 Specification

5. The draft issue 3 of HKTA 1035 specification is given in Annex 1 to thispaper. The proposed revisions are summarised below which consist of newfrequency bands for exemption :

Frequency Band Application35.145 � 35.225 MHz40.66 � 40.70 MHz72.00 � 72.02 MHz72.12 � 72.14 MHz72.16 � 72.22 MHz72.26 � 72.28 MHz

Model control aircraft

76 � 77 GHz Automotive radar system

Certification Requirement

6. Radiocommunications apparatus covered by the Order is classified underVoluntary Certification Scheme (VCS) of the Hong Kong TelecommunicationsEquipment Evaluation and Certification (HKTEC) Scheme.

Consultation in NSP-WG

7. The Issue 3 of HKTA 1035 specification had been discussed in the NSP-WG meeting and members were supportive of the adoption by the TA.

Recommendation

8. It is recommended that Issue 3 of HKTA 1035 specification in Annex 1 tothis paper be adopted by the TA. The revised specification should take effect afteramendment of the Order is completed tentatively in early 2005.

Advice Sought

9. Members are invited to consider the recommendation in paragraph 8 andto give comments on the revised specification of Issue 3 of HKTA 1035.



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Office of the Telecommunications AuthorityJanuary 2005

Annex 1 to TSAC Paper No. 7/2005HKTA 1035ISSUE 23 DRAFT FEBRUARY

2003JANUARY 2005

[Draft]

PERFORMANCE SPECIFICATION FOR

LOW POWER DEVICE

TELECOMMUNICATIONS AUTHORITYHONG KONG

HKTA 1035 ISSUE 3 Draft 12 Page iJANUARY 2005FEBRUARY 2003

FOREWORD

1. This specification is prescribed under section 32D of the TelecommunicationsOrdinance (Cap 106) (�the Ordinance�) to set out the technical and evaluationrequirements for low power device (LPD). LPD generally refers toradiocommunications apparatus that transmits in assigned frequency bands at a lowpower level, normally 100 mW or less, as covered by the Telecommunications(Telecommunications Apparatus)(Exemption from Licensing) Order (�the Order�).

2. Under section 39 of the Ordinance, a person is exempted from the obligation to hold alicence under the Ordinance so long as the conditions set out in the Order are satisfied.Radiocommunications apparatus falling into the scope of this specification, unlesscovered by other specification with more specific scope, shall meet the requirementsstipulated to fulfil the conditions of the Order.

3. It is the responsibility of the suppliers to ensure that their LPDs comply with thisspecification. Compliance with this specification should be determined inaccordance with the method of measurement contained in Annex 1 of thisspecification as far as possible. Where a test method specified in this specificationcannot be followed, an alternatively appropriate method may be used. Suppliers mayseek advice from the Telecommunications Authority (TA) if necessary.

4. At present, the Office of the Telecommunications Authority (OFTA) operates a HongKong Telecommunications Equipment Evaluation and Certification (HKTEC)Scheme. Details of the HKTEC Scheme can be found in the information note OFTAI 421. Under the Scheme, suppliers or manufacturers of the radiocommunicationsapparatus may apply to OFTA for certification of their apparatus against thisspecification. The application procedures for certification of radiocommunicationsapparatus can be found in the information note OFTA I 401. A prescribed label maybe affixed to the equipment which has been certified by the TA. Details of thelabelling arrangement can be found in the Standardisation Guide HKTA 3211.

5. In addition to this specification, radiocommunications apparatus capable of being usedfor connection as customer premises equipment (CPE) to the publictelecommunications networks (PTNs) in Hong Kong should comply with the relevantnetwork connection specification(s) issued by the TA. Manufacturers or suppliersmay also apply for a separate certification by the TA to verify conformity of theapparatus with the relevant specification(s) before it is connected to the PTNs.Details concerning the application procedure for certification of CPE by the TA can befound in the information note OFTA I 412.

6. LPDs are required to operate on a �no-interference no-protection� basis, i.e. they maynot cause radio interference and cannot claim protection from interference.Manufacturers or suppliers of LPD are advised to consider the potentiality ofinterference due to the shared use of the frequencies.

HKTA 1035 ISSUE 3 Draft 12 Page iiJANUARY 2005FEBRUARY 2003

7. The TA reserves the right to give separate certification to models he considers to betechnical variants and the performance of which may differ between models.

8. The TA may amend any part of this specification as and when he deems necessary.

9. In case of doubt about the interpretation of this specification, the methods of carryingout the test and the validity of statements made by the equipment manufacturers orsuppliers about the equipment, the decision of the TA shall be final.

10. The HKTA specifications and information notes are issued by the TA. Thedocuments can be obtained through one of the following methods :-

! downloading direct through the OFTA�s Internet Home Page. The Home Pageaddress is http://www.ofta.gov.hk;

! making a request for hard copies to :

Radio Laboratory, Standards SectionOffice of the Telecommunications Authority,29/F Wu Chung House,213 Queen�s Road East, Wanchai, Hong Kong.

Fax : +852 2343 5824Email : [email protected]

11. Enquiries about this specification may be directed to :-

Radio Laboratory, Standards Section,Office of the Telecommunications Authority,29/F Wu Chung House,213 Queen�s Road East, Wanchai, Hong Kong.

Fax : +852 2343 5824Email: [email protected]

HKTA 1035 ISSUE 3 Draft 12 Page iiiJANUARY 2005FEBRUARY 2003

AMENDMENT TABLE

Item Issue No. Paragraph Descriptions1. Issue 2

Feb 2003Title Re-title document from "Method of Measurement for Low

Power Devices" to "Performance Specification for LowPower Devices"

2. Issue 2Feb 2003

Foreword and Body Define scope and technical requirements for LPDs.

3. Issue 2Feb 2003

Annex 1 Incorporate a recommended method of measurement as anAnnex which has similar content as contained in HKTA1035 Issue 1.

4. Issue 3Jan 2005

1.2, 2.1 and 2.2 Add new frequency bands which are included in theTelecommunications (Telecommunications Apparatus)(Exemption from Licensing) Order.

HKTA 1035 ISSUE 3 Draft 12 Page ivJANUARY 2005FEBRUARY 2003

CONTENTS

1. GENERAL

1.1 Scope of Specification1.2 Definition1.3 Mechanical and Electrical Design1.4 Electrical Safety Requirements

2. TECHNICAL REQUIREMENTS

ANNEX 1 METHOD OF MEASUREMENT FOR LPD AGAINST HKTA 1035

HKTA 1035 ISSUE 3 Draft 12 Page 1JANUARY 2005FEBRUARY 2003

1 GENERAL

1.1 SCOPE OF SPECIFICATION

This specification defines the technical requirements for low power device (LPD),which operates as radiocommunications apparatus that transmit in assignedfrequency bands at a low power level, normally 100 mW or less, as covered by theTelecommunications (Telecommunications Apparatus)(Exemption from Licensing)Order.

1.2 DEFINITION

(a) �effective radiated power� has the meaning assigned to it by Article 1 of theRadio Regulations published by the International Telecommunication Union,as revised from time to time;

(b) �equivalent isotropically radiated power� has the meaning assigned to it byArticle 1 of the Radio Regulations published by the InternationalTelecommunication Union, as revised from time to time;

(c) �necessary bandwidth� has the meaning assigned to it by Article 1 of theRadio Regulations published by the International Telecommunication Union,as revised from time to time;

(d) �spurious emission� has the meaning assigned to it by Article 1 of the RadioRegulations published by the International Telecommunication Union, asrevised from time to time;

(e) �carrier power� has the meaning assigned to it by Article 1 of the RadioRegulations published by the International Telecommunication Union, asrevised from time to time;

1.3 MECHANICAL AND ELECTRICAL DESIGN

The device shall be so designed, constructed and manufactured in accordance withgood engineering practice, and with the aim of minimising harmful interference toother equipment and services. Control knobs and the like, which if maladjustedmight increase the interfering potentialities of the equipment, shall not be madeaccessible to the end user.

1.4 ELECTRICAL SAFETY REQUIREMENTS

For a device using a.c. mains as the power supply, it shall comply with the electricalsafety requirements set out in HKTA 2001 "Compliance Test Specification Safetyand Electrical Protection Requirements for Subscriber Equipment Connected to thePublic Telecommunications Networks in Hong Kong" issued by theTelecommunications Authority (TA).


2. TECHNICAL REQUIREMENTS

2.1 The low power device shall operate within the fundamental frequencies shown inthe first column of the following table and shall generate fundamental output levelsno greater than the limits set out in the second column �

First column Second column

3-195 kHz electric field strength not to exceed 40 dBµV/m andmagnetic field strength not to exceed 48.4 dBnA/m at100 m from the apparatus

13.553-13.567 MHz electric field strength not to exceed 88 dBµV/m at 30 mfrom the apparatus

33-33.28 MHz effective radiated power not to exceed 10 mW35.145 � 35.225 MHz effective radiated power not to exceed 100 mW36.26-36.54 MHz,36.41-36.69 MHz36.71-36.99 MHz36.96-37.24 MHz

effective radiated power not to exceed 10 mW

40.66-40.70 MHz effective radiated power not to exceed 100 mW

42.75-43.03 MHz44.73-45.01 MHz47.13-47.41 MHz


72.00 � 72.02 MHz

72.12 � 72.14 MHz

72.16 � 72.22 MHz

72.26 � 72.28 MHz

carrier power not to exceed 750 mW

187.5-188.0 MHz266.75-267.25 MHz313.75-314.25 MHz

314.75-315.25 MHz


173.96-174.24 MHz effective radiated power not to exceed 20 mW

819.1-823.1 MHz effective radiated power not to exceed 100 mW andpower spectral density not to exceed 10mW per 25 kHz

919.5-920.0 MHz effective radiated power not to exceed 10mW

2.400-2.4835 GHz effective radiated power not to exceed 100 mW


5.725-5.850 GHz effective radiated power not to exceed 100 mW

18.82-18.87 GHz effective radiated power not to exceed 100 mW andpower spectral density not to exceed 3 mW per 100 kHz

76 � 77 GHz carrier power not to exceed 10 mW


2.2 The output levels of spurious emission from the transmitters shall satisfy thefollowing conditions �

(a) in the case of transmissions at fundamental frequencies of or below 920 MHz,the output levels of the spurious emission shall be, in the case of the frequencyof the spurious emission shown in the first column of the following table, theoutput set out in the second column �

First column Second column

3-415 kHz electric field strength not to exceed 17 dBµV/mand magnetic field strength not to exceed 25.4dBnA/m at 300 m

415 kHz-30MHz electric field strength not to exceed 30 dBµV/mand magnetic field strength not to exceed 38.4dBnA/m at 30 m

87-137 MHz,470-790 MHz

effective radiated power not to exceed 60 nW

30-1000 MHzexcluding 87-137 MHzand 470-790 MHz

effective radiated power not to exceed 300 nW

1000 - 2000 MHz effective radiated power not to exceed 1 µW

(b) in the case of transmissions at fundamental frequencies between 2.400 to2.4835 GHz, 5.725 to 5.850 GHz or 18.82 to 18.87 GHz, effective radiatedpower shall not exceed 10 µW outside the frequency band in which thefundamental frequencies are located.

(c) in the case of transmissions at fundamental frequencies between 35.145 to35.225 MHz, 40.66 MHz to 40.70 MHz, effective radiated power shall notexceed 2 nW for frequency below 1 GHz and 20 nW for frequency at orabove 1 GHz.

(d) in the case of transmissions at fundamental frequencies between 72.00 to72.28 MHz, effective radiated power shall not exceed 30 µW.

(e) in the case of transmissions at fundamental frequencies between 76 to 77GHz, the power density shall not exceed 600 pW/cm2 at 3 m from theapparatus for frequency between 40 GHz and 200 GHz; and 1000 pW/cm2

at 3 m from the apparatus for frequency at or above 200 GHz.

- END -


ANNEX 1

METHOD OF MEASUREMENT FORLPD AGAINST HKTA 1035


1. INTRODUCTION

This Annex describes the method and condition recommended for measurement oflow power device (LPD) against HKTA 1035 specification (hereafter referred to asthe "Specification").

Compliance with the technical requirements in the Specification should bedetermined in accordance with this Annex 1 as far as possible. Where a testmethod specified in this Annex cannot be followed, an alternatively appropriatemethod may be used. Suppliers may seek advice from the TA if necessary.

2. TEST CONDITIONS: ATMOSPHERIC CONDITIONS ANDPOWER SUPPLY

2.1 GENERAL

Tests shall be made under normal test conditions (clause 2.3).

2.2 TEST POWER SOURCE

During tests the power supply for the equipment under test (EUT) may be replacedby a test power source capable of producing normal test source voltages as specifiedin Clauses 2.3.2. The power source voltage shall be maintained within a toleranceof ±3% relative to the voltage at the beginning of each test.

2.3 NORMAL TEST CONDITIONS

2.3.1 Normal temperature and humidity

The normal temperature and humidity conditions for tests shall be any convenientcombination of temperature and humidity within the following ranges :

Temperature 15°C to 35°CRelative humidity 10% to 80%

2.3.2 Normal test source voltage

2.3.2.1 Mains voltage

The normal test source voltage for equipment to be connected to the mains shall bethe nominal mains voltage for which the equipment was designed. The frequencyof the test power source corresponding to the AC mains shall be 50 ± 1 Hz.


2.3.2.2 Other power sources

For operation from other power sources or types of battery, either primary orsecondary, the normal test source voltage shall be that declared by the equipmentmanufacturer.

3. GENERAL ELECTRICAL TEST CONDITIONS

3.1 NORMAL TEST SIGNAL

The normal test signal shall be, where appropriate, a continuously modulated signalor trains of corrected coded signal. This signal shall be that which requires thegreatest radio frequency occupied bandwidth.

3.2 MEASURING RECEIVER

The term measuring receiver refers to either a spectrum analyser or a selectivevoltmeter. Unless otherwise specified, the bandwidth of the measuring receivershall be greater than the spectral width of the component being measured.

3.3 ARTIFICIAL ANTENNA

Where applicable, tests shall be carried out using an artificial antenna which shall bea substantially non-reactive non-radiating load of 50 ohms connected to the antennaconnector, or in the case of equipment with integral antenna, to the test fixture(Clause 3.4).

3.4 TEST FIXTURE

In case of equipment intended for use with an integral antenna, relative measurementmay be made with the use of a test fixture. The test fixture shall provide a 50-ohmradio frequency terminal at the working frequencies of the equipment. Thecharacteristics of the test fixture shall meet the following requirements :

(a) the coupling loss shall not be greater than 30 dB;

(b) the variation of coupling loss with frequency shall not cause errors exceeding 2dB in measurements using the test fixture; and

(c) the coupling device shall not include any non-linear elements.


3.5 TEST SITES AND GENERAL REQUIREMENTS FOR MEASUREMENTINVOLVING THE USE OF RADIATED FIELDS

3.5.1 Test site

The test site shall be on a reasonably level surface or ground. The equipment undertest and the measuring equipment shall be located over a ground plane of at least 5 mdiameter. A non-conducting support, capable of rotation through 360° in thehorizontal plan, shall be used to support the equipment under test (EUT) at a heightof 1.5 m above the ground. Sufficient precautions shall be taken to ensure thatreflections from extraneous objects adjacent to the site and ground reflections do notdegrade the measurement results.

Ground Plane

Equipmentunder test

Measuringreceiver

Testantenna

3 m

1-4m

1.5 m

Figure 1 : Test Site

3.5.2 Test antenna

The radiation from the equipment shall be detected by test antenna at a distance of atleast equal to λ/2 (where λ is the wavelength of the frequency tested) or 3 mwhichever is the greater. The test antenna is mounted on a support such as to allowit to be used in either horizontal or vertical polarisation and to vary the height of itscentre above ground over the range of 1 to 4 m. Preferably a test antenna withpronounced directivity should be used. The size of the test antenna along themeasurement axis shall not exceed 20 % of the measuring distance. The test antenna is connected to a measuring receiver which is capable of beingtuned to any frequency being investigated and of measuring accurately the relativelevels of signals at its input.

3.5.3 Substitution antenna

When measuring in the frequency range up to 1 GHz the substitution antenna shallbe a λ/2 dipole. When measuring in the frequency range above 4 GHz a hornradiator shall be used. For measurements between 1 and 4 GHz either a λ/2 dipoleor a horn radiator may be used. The centre of this antenna shall coincide with thereference point of the EUT it replaces. This reference point shall be the volume


centre of the sample when its antenna is mounted inside the cabinet or the pointwhere an external antenna is connected to the cabinet. The distance between thelower extremity of the dipole and the ground shall be at least 0.3 m. The substitution antenna shall be connected to a calibrated signal generator when thesite is used for radiation measurements.

3.6 MEASUREMENT OF FUNDAMENTAL EMISSION

3.6.1 General

Fundamental emission is measured, to the extent possible, in the absence ofmodulation. There should be a facility to operate the transmitter in unmodulatedstate. If it is not possible to provide an unmodulated carrier, the radiated powershall be measured under normal/typical operation mode. In case of pulsemodulation equipment, where it is not possible to make the measurement in theabsence of modulation, the measurement shall be carried out by using a powermeasuring receiver with the bandwidth and detector set in accordance with thespecification of CISPR 16 Section One for the bands C and D.

The measurements shall be performed at the highest power level at which thetransmitter is intended to operate.

3.6.2 Method of measurement for equipment with antenna output terminals

The measurement applies only to equipment with a permanent external 50 ohmantenna connector.

The transmitter shall be connected to an artificial antenna (Clause 3.3) and shall beswitched on, if possible, without modulation. The power supplied to the artificialantenna shall be measured.

The effective radiated power (e.r.p.) is the product of power supplied to the antennaand its gain relative to a half-wave dipole.

When this method is used to determine the radiated power, the effective gain of theequipment antenna must be stated based on measurement or on the data supplied bythe antenna manufacturer.

3.6.3 Method of measurement for equipment with integral antenna

(a) At a test site complying with Clause 3.5.1, the equipment shall be placed atthe specified height on a non-conducting support and in the position closest tothe normal use as declared by the manufacturer;

(b) The transmitter shall be switched on, if possible, without modulation and themeasuring receiver shall be tuned to the frequency of the fundamental emissionof the equipment;


(c) The test antenna shall be orientated for vertical polarisation and shall be raisedor lowered along the specified height until a maximum signal level is detectedon the measuring receiver;

(d) The equipment under test shall then be rotated through 360° until themaximum signal is received;

(e) The equipment shall be replaced by the substitution antenna and the testantenna raised or lowered as necessary to ensure that the maximum signal isstill received;

(f) The input signal to the substitution antenna shall be adjusted in level until anequal or known related level to that detected from the transmitter is obtained inthe measuring receiver;

(g) The effective radiated power is equal to the power supplied to the substitutionantenna, increased by the known relationship if necessary;

(h) Steps (a) to (g) shall be repeated for any alternative integral antenna suppliedby the manufacturer; and

(i) A check shall be made at other planes of polarisation to ensure that the valueobtained above is the maximum.

3.7 MEASUREMENT OF SPURIOUS EMISSION

3.7.1 General

The level of spurious emissions shall be measured as their effective radiated powerwhen radiated by the antenna and cabinet of the equipment.

3.7.2 Method of measurement - effective radiated power

(a) At a test site complying with Clause 3.5, the equipment shall be placed at thespecified height on a non-conducting support and in the position closest to thenormal use as declared by the manufacturer;

(b) The transmitter shall be switched on and modulated with normal test signal(Clause 3.1);

(c) The measuring receiver shall be tuned over a wide frequency range. Thefrequency range for measurement of spurious emission shall be referred toTable 1 of ITU-R Recommendation SM.329-8 "Spurious Emissions" publishedby the International Telecommunication Union. Unless otherwise specified,the search for spurious emission shall not include the band in which the deviceis intended to operate;

(d) At each frequency at which a spurious component is detected, the test antennashall be orientated for vertical polarisation and shall be raised or lowered along


the specified height until a maximum signal level is detected on the measuringreceiver;

(e) The equipment under test shall then be rotated through 360° until themaximum signal is received;

(f) The equipment shall be replaced by the substitution antenna and the testantenna raised or lowered as necessary to ensure that the maximum signal isstill received;

(g) The input signal to the substitution antenna shall be adjusted in level until anequal or known related level to that detected from the transmitter is obtained inthe measuring receiver;

(h) The effective radiated power is equal to the power supplied to the substitutionantenna, increased by the known relationship if necessary;

(i) A check shall be made at other planes of polarisation to ensure that the valueobtained above is the maximum;

(j) Measurements shall be repeated with the transmitter being modulated withnormal test signal; and

(k) If applicable, measurements shall be repeated with the transmitter on standby.

3.8 MEASUREMENT OF FIELD STRENGTH BELOW 30 MHz

To the extent possible, the equipment under test shall be measured on an open fieldsite at the distance specified.

Measurement may be performed at a distance closer than that specified. However,attempt should be made to avoid making measurement in the near field. Whenperforming measurements at a closer distance than specified, the results shall beextrapolated to the specified distance either by making measurements at a minimumof two distances on at least one radical to determine the proper extrapolation factoror by using the square of an inverse linear distance extrapolation factor (40dB/decade).


4. TRANSMITTER TESTS

4.1 FUNDAMENTAL EMISSION

Equipment operating in one of the frequency bands given in the first column of thetable in Paragraph 2.1 of the Specification is not required to operate on specificcarrier frequencies. The effective radiated power of the fundamental emission shallbe measured according to Clause 3.6 of this Annex. The measured value shall notexceed the limits as specified in the second column of the table in Paragraph 2.1 ofthe Specification.

4.2 POWER SPECTRAL DENSITY

Measurement of power spectral density applies only to equipment operating in thebands 819.1-823.1 MHz or 18.82-18.87 GHz.

The measuring receiver shall have resolution bandwidths of 25 kHz and 100 kHz inthe bands 819.1-823.1 MHz and 18.82-18.87 GHz respectively. Where theresolution bandwidth setting available on the spectrum analyser is limited, a meansof interpolation between settings shall be used.

The power level calibration of the measuring receiver shall be related to the powerlevel measured in Clause 4.1.1 of this Annex by a known radio frequency attenuationfactor. This factor will be used to calculate the absolute levels of radio frequencypower.

The transmitter of the equipment shall be switched on and adjusted in a mode thatrepresents the maximum level of power spectral density in its normal operation.

In any of the specified bandwidth, the power spectral density shall not exceed thecorresponding limits given in the second column of the table in Paragraph 2.1 of theSpecification.

4.3 SPURIOUS EMISSION

The effective radiated power of spurious emission from the equipment shall bemeasured in accordance with the method in Clause 3.7 of this Annex. Any poweremitted by frequencies separated by 250% or more of the necessary bandwidth fromthe centre frequency of the emission from the equipment shall not exceed the limitsas specified in Paragraph 2.2 of the Specification.


5. MEASUREMENT UNCERTAINTY

The accumulated measurement uncertainties of the test system in use for theparameters should not exceed those given below �

RF Frequency ± 1 x 10-7

RF Power, conducted ± 0.75 dBRadiated emission, valid up to 4 GHz ± 6 dB

- END -

Documents

TELECOMMUNICATIONS STANDARD ADVISORY …tel_archives.ofca.gov.hk/en/ad-comm/tsac/ts-paper/ts2005p7.pdf · 6. Radiocommunications apparatus covered by the Order is classified under