SIST EN 301 466:2001
(Main)ElectroMagnetic Compatibility and Radio Spectrum Matters (ERM); Technical characteristics and methods of measurement for two-way VHF radiotelephone apparatus for fixed installation in survival craft
- Abstract
ETS for equipment to be used in maritime mobile services and forming part of the Global Maritime Distress and Safety System (GMDSS)
- Status
- Published
- Publication Date
- 31-Aug-2001
- Technical Committee
- RES - Radio equipment and systems
- Current Stage
- 6060 - National Implementation/Publication (Adopted Project)
- Start Date
- 01-Sep-2001
- Due Date
- 01-Sep-2001
- Completion Date
- 01-Sep-2001
SIST EN 301 466:2001 is the SIST adoption of ETSI EN 301 466 Version 1.1.1 for two-way VHF radiotelephone apparatus fixed in survival craft. It sets the minimum technical characteristics and measurement methods for maritime mobile service equipment used in the Global Maritime Distress and Safety System (GMDSS), so manufacturers, test laboratories, and purchasers can judge whether equipment is fit for on-scene communications at sea.
What does SIST EN 301 466:2001 specify?
SIST EN 301 466:2001 specifies technical requirements and test methods for VHF radiotelephone equipment operating in the maritime mobile bands from 156 MHz to 174 MHz and intended for fixed installation in survival craft. The document is organized into general requirements, test conditions, measurement conditions, environmental tests, transmitter requirements, receiver requirements, and requirements for a secondary battery charger.
| Annex | What it covers |
|---|---|
| Annex A | Measuring receiver specification for adjacent channel power measurement |
| Annex B | Radiated measurements, including outdoor and indoor test sites and substitution antenna arrangements |
The scope states that the requirements incorporate relevant provisions from the Radio Regulations, SOLAS 1974, IMO resolutions A.694 and A.809, and EN 60945.
What are the key requirements of SIST EN 301 466:2001?
SIST EN 301 466:2001 requires the equipment to support survival-craft communications between survival craft, between survival craft and ship, and between survival craft and rescue units. In practice, this means the set must be usable in emergency situations, with controls and construction suited to harsh maritime use.
Basic construction and controls
The equipment shall include at least a transmitter and receiver, an antenna, and a microphone with press-to-talk and a loudspeaker. It must have an external 50 Ω antenna connector, simple operation, and controls sized for use with gloves.
The document also requires a channel selector, an on/off switch with indication, a non-locking press-to-talk switch, a volume control, a squelch control, and a carrier power indicator. If transmitter ERP exceeds 1 watt, a power-reduction switch is required. This matters because rescuers need clear operation with minimal confusion and no user access to settings that could impair performance.
Operating channels, power and timing
SIST EN 301 466:2001 requires simplex voice operation on single-frequency channels only. The equipment shall provide channel 16 and at least one other single-frequency channel from Appendix S-18 of the Radio Regulations, excluding DSC calling channel 70.
After switch-on, the equipment shall be operational within 5 seconds, and channel changes shall not take more than 5 seconds. The transmitter and receiver changeover time shall not exceed 0.3 seconds. This ensures rapid use during distress traffic.
Battery and safety provisions
The standard requires reverse-polarity protection for battery supply, protection against antenna open or short circuit, and design features that avoid sharp projections. Integral primary batteries must have a shelf life of at least two years and enough capacity for at least 8 hours of operation under the defined duty cycle. Batteries must be replaceable without special tools and without reducing watertightness.
Environmental and performance testing
The equipment is tested for vibration, shock, temperature, corrosion, immersion, thermal shock, and oil resistance. It is also checked at normal and extreme temperatures and supply voltages. In practice, this verifies that the set remains usable after transport, exposure to weather, and contact with seawater or fuel.
Transmitter and receiver performance
The transmitter requirements cover frequency error, carrier power, frequency deviation, modulator sensitivity, audio frequency response, harmonic distortion, adjacent channel power, spurious emissions, residual modulation, and transient frequency behaviour. The receiver requirements cover output power, sensitivity, selectivity, blocking, spurious response rejection, noise, squelch operation, and limiter response. These limits are the core technical checks used in conformity testing.
What terms does SIST EN 301 466:2001 define?
- modulation index - the ratio of frequency deviation to modulation frequency.
- rated output power - the output power declared by the manufacturer.
- Equipment under test (EUT) - the item being measured or subjected to environmental tests.
- Effective Radiated Power (ERP) - the transmitted power level referenced to the antenna system.
- SINAD - the signal-plus-noise-plus-distortion to noise-plus-distortion ratio used for receiver performance checks.
- Global Maritime Distress and Safety System (GMDSS) - the maritime safety framework for which this equipment is intended.
- SOLAS - the International Convention for the Safety of Life at Sea, referenced for operational and safety-related requirements.
Who uses SIST EN 301 466:2001?
SIST EN 301 466:2001 is used by radio equipment manufacturers, test laboratories, certification teams, quality managers, and maritime buyers. They use it to design, verify, type-test, and procure two-way VHF survival-craft radios and associated battery chargers. It is also relevant to maintenance teams that need to check labeling, battery replacement, and inspection access.
Which standards are used with SIST EN 301 466:2001?
The document references the Radio Regulations Appendix S-18 for VHF maritime channels, IMO Resolution A.809 for survival-craft VHF radiotelephone performance, and IMO Resolution A.694 for shipborne GMDSS radio equipment requirements. It also uses EN 60945 for general maritime equipment requirements and tests, IEC 60068-2-27 for shock testing, ITU-T Recommendation P.53 for psophometric filtering, ETR 028 for measurement uncertainty, ETR 273 for radiated measurement sites, SOLAS 1974, and ISO Recommendation 694 for compass safe distance.
What does the SIST EN 301 466:2001 document contain?
SIST EN 301 466:2001 contains step-by-step measurement methods, environmental test procedures, and pass/fail limits for transmitter, receiver, and charger performance. It also includes a defined test sequence, measurement uncertainty rules, and interpretation guidance for test reports.
Annex A gives the specification for the power measuring receiver used in adjacent channel power testing, including IF filter selectivity and meter performance. Annex B gives the radiated test site arrangements, test antenna and substitution antenna guidance, and indoor and outdoor measurement setups. The main text also includes a formula-based frequency-deviation characteristic and a transient-frequency template used in transmitter testing.
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Frequently Asked Questions
SIST EN 301 466:2001 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "ElectroMagnetic Compatibility and Radio Spectrum Matters (ERM); Technical characteristics and methods of measurement for two-way VHF radiotelephone apparatus for fixed installation in survival craft". This standard covers: ETS for equipment to be used in maritime mobile services and forming part of the Global Maritime Distress and Safety System (GMDSS)
ETS for equipment to be used in maritime mobile services and forming part of the Global Maritime Distress and Safety System (GMDSS)
SIST EN 301 466:2001 is classified under the following ICS (International Classification for Standards) categories: 33.060.20 - Receiving and transmitting equipment; 33.100.01 - Electromagnetic compatibility in general; 47.020.70 - Navigation and control equipment. The ICS classification helps identify the subject area and facilitates finding related standards.
SIST EN 301 466:2001 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.ElectroMagnetic Compatibility and Radio Spectrum Matters (ERM); Technical characteristics and methods of measurement for two-way VHF radiotelephone apparatus for fixed installation in survival craft47.020.70Navigacijska in krmilna opremaNavigation and control equipment33.100.01Elektromagnetna združljivost na splošnoElectromagnetic compatibility in general33.060.20Sprejemna in oddajna opremaReceiving and transmitting equipmentICS:Ta slovenski standard je istoveten z:EN 301 466 Version 1.1.1SIST EN 301 466:2001en01-september-2001SIST EN 301 466:2001SLOVENSKI
STANDARD
ETSIEN301466V1.1.1(2000-10)EuropeanStandard(Telecommunicationsseries)ElectromagneticcompatibilityandRadiospectrumMatters(ERM);Technicalcharacteristicsandmethodsofmeasurementfortwo-wayVHFradiotelephoneapparatusforfixedinstallationinsurvivalcraftSIST EN 301 466:2001
ETSIETSIEN301466V1.1.1(2000-10)2ReferenceDEN/ERM-RP01-015Keywordsemergency,GMDSS,maritime,radio,VHFETSI650RoutedesLuciolesF-06921SophiaAntipolisCedex-FRANCETel.:+33492944200Fax:+33493654716SiretN°34862356200017-NAF742CAssociationàbutnonlucratifenregistréeàlaSous-PréfecturedeGrasse(06)N°7803/88ImportantnoticeIndividualcopiesofthepresentdocumentcanbedownloadedfrom:http://www.etsi.orgThepresentdocumentmaybemadeavailableinmorethanoneelectronicversionorinprint.Inanycaseofexistingorperceiveddifferenceincontentsbetweensuchversions,thereferenceversionisthePortableDocumentFormat(PDF).Incaseofdispute,thereferenceshallbetheprintingonETSIprintersofthePDFversionkeptonaspecificnetworkdrivewithinETSISecretariat.Usersofthepresentdocumentshouldbeawarethatthedocumentmaybesubjecttorevisionorchangeofstatus.InformationonthecurrentstatusofthisandotherETSIdocumentsisavailableathttp://www.etsi.org/tb/status/Ifyoufinderrorsinthepresentdocument,sendyourcommentto:editor@etsi.frCopyrightNotificationNopartmaybereproducedexceptasauthorizedbywrittenpermission.Thecopyrightandtheforegoingrestrictionextendtoreproductioninallmedia.©EuropeanTelecommunicationsStandardsInstitute2000.Allrightsreserved.SIST EN 301 466:2001
ETSIETSIEN301466V1.1.1(2000-10)3ContentsIntellectualPropertyRights.8Foreword.81Scope.92References.93Definitions,symbolsandabbreviations.103.1Definitions.103.2Symbols.103.3Abbreviations.104Generalrequirements.104.1Construction.104.2Frequenciesandpower.114.3Controls.114.4Switchingtime.124.5Safetyprecautions.124.6Classofemissionandmodulationcharacteristics.124.7Battery.124.8Labelling.125Testconditions,powersourcesandambienttemperatures.135.1Normalandextremetestconditions.135.2Testpowersource.135.3Normaltestconditions.135.3.1Normaltemperatureandhumidity.135.3.2Normalpowersources.135.3.2.1Externalbatterypowersource.135.3.2.2Integratedbatterypowersource.135.4Extremetestconditions.145.4.1Extremetemperatures.145.4.1.1Upperextremetemperature.145.4.1.2Lowerextremetemperature.145.4.2Extremetestpowersupplyvalues.145.4.2.1Upperextremetestvoltage.145.4.2.1.1Externalbatterypowersource.145.4.2.1.2Internalbatterypowersource.145.4.2.2Lowerextremetestvoltage.145.4.2.2.1Externalbatterypowersource.145.4.2.2.2Internalbatterypowersource.145.5Procedurefortestsatextremetemperatures.146Generalconditionsofmeasurement.156.1Testconnections.156.2Arrangementsfortestsignalsappliedtothereceiverinput.156.3Receivermuteorsquelchfacility.156.4Normaltestmodulation.156.5Artificialantenna.156.6Testchannels.156.7Measurementuncertaintyandinterpretationofthemeasuringresults.156.7.1Measurementuncertainty.156.7.2Interpretationofthemeasurementresults.167Environmentaltests.167.1Introduction.167.2Procedure.167.3Performancecheck.177.4Vibrationtest.17SIST EN 301 466:2001
ETSIETSIEN301466V1.1.1(2000-10)47.4.1Definition.177.4.2Methodofmeasurement.177.4.3Requirement.177.5Shocktests.187.5.1Definition.187.5.2Methodofmeasurement.187.5.3Requirement.187.6Temperaturetests.187.6.1General.187.6.2Dryheatcycle.187.6.2.1Methodofmeasurement.187.6.2.2Requirement.187.6.3Dampheatcycle.197.6.3.1Methodofmeasurement.197.6.3.2Requirement.197.6.4Lowtemperaturecycle.197.6.4.1Methodofmeasurement.197.6.4.2Requirement.197.7Corrosiontest.207.7.1General.207.7.2Methodofmeasurement.207.7.3Requirements.207.8Immersiontest.217.8.1Methodofmeasurement.217.8.2Requirements.217.9Thermalshock.217.9.1Methodofmeasurement.217.9.2Requirements.217.10Oilresistancetest.217.10.1Methodofmeasurement.217.10.2Requirement.228Transmitter.228.1Frequencyerror.228.1.1Definition.228.1.2Methodofmeasurement.228.1.3Limit.228.2Carrierpower.228.2.1Definitions.228.2.2Methodofmeasurement.228.2.3Limits.228.3Frequencydeviation.238.3.1Definition.238.3.2Maximumfrequencydeviation.238.3.2.1Methodofmeasurement.238.3.2.2Limit.238.3.3Reductionoffrequencydeviationatmodulationfrequenciesabove3kHz.238.3.3.1Methodofmeasurement.238.3.3.2Limits.238.4Sensitivityofthemodulator,includingmicrophone.248.4.1Definition.248.4.2Methodofmeasurement.248.4.3Limit.248.5Audiofrequencyresponse.248.5.1Definition.248.5.2Methodofmeasurement.248.5.3Limit.248.6Audiofrequencyharmonicdistortionoftheemission.258.6.1Definition.258.6.2Methodofmeasurement.258.6.2.1Normaltestconditions.258.6.2.2Extremetestconditions.25SIST EN 301 466:2001
ETSIETSIEN301466V1.1.1(2000-10)58.6.3Limit.258.7Adjacentchannelpower.258.7.1Definition.258.7.2Methodofmeasurement.258.7.3Limit.268.8Conductedspuriousemissionsconveyedtotheantenna.268.8.1Definition.268.8.2Methodofmeasurement.268.8.3Limit.268.9Cabinetradiationandconductedspuriousemissionsotherthanthoseconveyedtotheantenna.268.9.1Definitions.268.9.2Methodofmeasurement.268.9.3Limits.278.10Residualmodulationofthetransmitter.278.10.1Definition.278.10.2Methodofmeasurement.288.10.3Limit.288.11Transientfrequencybehaviourofthetransmitter.288.11.1Definitions.288.11.2Methodofmeasurement.298.11.3Limits.309Receiver.329.1Harmonicdistortionandratedaudiofrequencyoutputpower.329.1.1Definition.329.1.2Methodsofmeasurement.329.1.3Limits.329.2Audiofrequencyresponse.329.2.1Definition.329.2.2Methodofmeasurement.329.2.3Limits.339.3Maximumusablesensitivity.339.3.1Definition.339.3.2Methodofmeasurement.349.3.3Limits.349.4Co-channelrejection.349.4.1Definition.349.4.2Methodofmeasurement.349.4.3Limit.349.5Adjacentchannelselectivity.349.5.1Definition.349.5.2Methodofmeasurement.359.5.3Limits.359.6Spuriousresponserejection.359.6.1Definition.359.6.2Methodofmeasurement.359.6.3Limit.359.7Intermodulationresponse.369.7.1Definition.369.7.2Methodofmeasurement.369.7.3Limit.369.8Blockingordesensitization.369.8.1Definition.369.8.2Methodofmeasurement.369.8.3Limit.379.9Conductedspuriousemissions.379.9.1Definition.379.9.2Methodofmeasurement.379.9.3Limit.379.10Radiatedspuriousemissions.379.10.1Definition.379.10.2Methodofmeasurements.37SIST EN 301 466:2001
ETSIETSIEN301466V1.1.1(2000-10)69.10.3Limit.389.11Amplituderesponseofthereceiverlimiter.389.11.1Definition.389.11.2Methodofmeasurement.389.11.3Limit.389.12Receivernoise.389.12.1Definition.389.12.2Methodofmeasurement.399.12.3Limit.399.13Squelchoperation.399.13.1Definition.399.13.2Methodofmeasurement.399.13.3Limits.399.14Squelchhysteresis.409.14.1Definition.409.14.2Methodofmeasurement.409.14.3Limit.4010Secondarybatterycharger.4010.1General.4010.2Environmentaltests.4010.2.1Introduction.4010.2.2Vibrationtest.4010.2.2.1Definition.4010.2.2.2Methodofmeasurement.4110.2.2.3Requirement.4110.2.3Shocktests.4110.2.3.1Definition.4110.2.3.2Methodofmeasurement.4110.2.3.3Requirement.4110.2.4Temperaturetests.4210.2.4.1General.4210.2.4.2Dryheatcycle.4210.2.4.3Dampheatcycle.4210.2.4.4Lowtemperaturecycle.4210.2.5Corrosiontest.4210.2.5.1General.4210.2.5.2Methodofmeasurement.4310.2.5.3Requirements.4310.3Chargingtime.43AnnexA(normative):Measuringreceiverforadjacentchannelpowermeasurement.44A.1Powermeasuringreceiverspecification.44A.1.1IFfilter.44A.1.2Attenuationindicator.45A.1.3rmsvalueindicator.45A.1.4Oscillatorandamplifier.45AnnexB(normative):Radiatedmeasurements.46B.1Testsitesandgeneralarrangementsformeasurementsinvolvingtheuseofradiatedfields.46B.1.1Outdoortestsite.46B.1.2Testantenna.47B.1.3Substitutionantenna.47B.1.4Optionaladditionalindoorsite.47B.2Guidanceontheuseofradiationtestsites.48B.2.1Measuringdistance.48B.2.2Testantenna.48B.2.3Substitutionantenna.48B.2.4Artificialantenna.49B.2.5Auxiliarycables.49SIST EN 301 466:2001
ETSIETSIEN301466V1.1.1(2000-10)7B.2.6Acousticmeasuringarrangement.49B.3Furtheroptionalalternativeindoortestsiteusingananechoicchamber.49B.3.1Exampleoftheconstructionofashieldedanechoicchamber.50B.3.2Influenceofparasiticreflectionsinanechoicchambers.50B.3.3Calibrationoftheshieldedanechoicchamber.51B.4Standardposition.53History.54SIST EN 301 466:2001
ETSIETSIEN301466V1.1.1(2000-10)8IntellectualPropertyRightsIPRsessentialorpotentiallyessentialtothepresentdocumentmayhavebeendeclaredtoETSI.TheinformationpertainingtotheseessentialIPRs,ifany,ispubliclyavailableforETSImembersandnon-members,andcanbefoundinETSISR000314:"IntellectualPropertyRights(IPRs);Essential,orpotentiallyEssential,IPRsnotifiedtoETSIinrespectofETSIstandards",whichisavailablefromtheETSISecretariat.LatestupdatesareavailableontheETSIWebserver(http://www.etsi.org/ipr).PursuanttotheETSIIPRPolicy,noinvestigation,includingIPRsearches,hasbeencarriedoutbyETSI.NoguaranteecanbegivenastotheexistenceofotherIPRsnotreferencedinETSISR000314(ortheupdatesontheETSIWebserver)whichare,ormaybe,ormaybecome,essentialtothepresentdocument.ForewordThisEuropeanStandard(Telecommunicationsseries)hasbeenproducedbyETSITechnicalCommitteeElectromagneticcompatibilityandRadiospectrumMatters(ERM).NationaltranspositiondatesDateofadoptionofthisEN:13October2000DateoflatestannouncementofthisEN(doa):31January2001DateoflatestpublicationofnewNationalStandardorendorsementofthisEN(dop/e):31July2001DateofwithdrawalofanyconflictingNationalStandard(dow):31July2001SIST EN 301 466:2001
ETSIETSIEN301466V1.1.1(2000-10)91ScopeThepresentdocumentstatestheminimumtechnicalcharacteristicsrequiredforVHFradiotelephoneequipment,operatinginthebandsbetween156MHzand174MHzallocatedtotheMaritimeMobileServicesandsuitableforfixedinstallationsinsurvivalcraftinaccordancewiththeprovisionsoftheGlobalMaritimeDistressandSafetySystem(GMDSS).TherelevantrequirementsdetailedintheRadioRegulations[1],InternationalConventionfortheSafetyOfLifeAtSeaSOLAS1974[6]andtheInternationalMaritimeOrganizationResolutionsA.694[3]andA.809[2]aswellasallrelevantrequirementsofEN60945[9]areincorporatedinthepresentdocument.2ReferencesThefollowingdocumentscontainprovisionswhich,throughreferenceinthistext,constituteprovisionsofthepresentdocument.• Referencesareeitherspecific(identifiedbydateofpublication,editionnumber,versionnumber,etc.)ornon-specific.• Foraspecificreference,subsequentrevisionsdonotapply.• Foranon-specificreference,thelatestversionapplies.• Anon-specificreferencetoanETSshallalsobetakentorefertolaterversionspublishedasanENwiththesamenumber.[1]RadioRegulations1998,AppendixS-18:"TableoftransmittingfrequenciesintheVHFmaritimemobileband".[2]InternationalMaritimeOrganizationResolutionA.809(19):"PerformancestandardsforsurvivalcrafttwowayVHFradiotelephoneapparatus".[3]InternationalMaritimeOrganizationResolutionA.694(17):"Generalrequirementsforship-borneradioequipmentformingpartoftheGlobalMaritimeDistressandSafetySystem(GMDSS)".[4]ETSIETR028:"RadioEquipmentandSystems(RES);Uncertaintiesinthemeasurementofmobileradioequipmentcharacteristics".[5]ITU-TRecommendationP.53(1994):"Psophometerforuseontelephone-typecircuits".[6]SOLAS1974:"InternationalMaritimeOrganization(IMO),InternationalConventionfortheSafetyOfLifeAtSea(SOLAS),(1974asamended)".[7]IEC60068-2-27:"Environmentaltesting.Part2:Tests.TestEaandguidance:Shock".[8]ETSIETR273:"ElectromagneticCompatibilityandradiospectrumMatters(ERM);Improvementofradiatedmethodsofmeasurement(usingtestsites)andevaluationofthecorrespondingmeasurementincertainties".[9]EN60945(1997):"Maritimenavigationandradiocommunicationequipmentandsystems-Generalrequirements-Methodsoftestingandrequiredtestresults".[10]ISORecommendation694(1968):"Shipsandmarinetechnology-Positioningofmagneticcompassesinships".SIST EN 301 466:2001
ETSIETSIEN301466V1.1.1(2000-10)103Definitions,symbolsandabbreviations3.1DefinitionsForthepurposesofthepresentdocument,thefollowingtermsanddefinitionsapply:modulationindex:ratioofthefrequencydeviationtothemodulationfrequencyratedoutputpower:outputpowerasdefinedbythemanufacturer3.2SymbolsForthepurposesofthepresentdocument,thefollowingsymbolsapply:dBAAcousticlevelindBrelativeto2×10-5PascalgAccelerationofgravity(≈9,81m/s2)G3EPhasemodulationforvoiceQRatioofanobservedaccelerationattheequipmenttotheaccelerationatthebaseofthevibrationtable3.3AbbreviationsForthepurposesofthepresentdocument,thefollowingabbreviationsapply:adamplitudedifferenceDSCDigitalSelectiveCallingemfelectro-motiveforceERPEffectiveRadiatedPowerEUTEquipmentundertestfdfrequencydifferenceGMDSSGlobalMaritimeDistressandSafetySystemIFIntermediateFrequencyRFRadioFrequencyrmsrootmeansquareSINAD(Signal+Noise+Distortion)/(Noise+Distortion)ratioSOLASInternationalConventionfortheSafetyofLifeatSea4Generalrequirements4.1ConstructionTheequipmentshallbecapableofbeingusedforon-scenecommunicationsbetweensurvivalcraft,betweensurvivalcraftandshipandbetweensurvivalcraftandrescueunit.Theequipmentshallcompriseatleast:• atransmitterandreceiver;• anantennawhichmaybefixedtotheequipmentormountedseparately;and• amicrophonewithpress-to-talkswitchandaloudspeaker.Theequipmentshallbefittedwithanexternal50Ωantennaconnector.Theequipmentmaybeoperatedfromanexternalorintegratedpowersource.Anintegratedpowersourcemayconsistofprimaryorsecondarybatteries.SIST EN 301 466:2001
ETSIETSIEN301466V1.1.1(2000-10)11Themechanicalandelectricalconstructionandfinishoftheequipmentshallconforminallrespectstogoodengineeringpracticeandtheequipmentshallbesuitableforuseinsurvivalcraftatsea.Allcontrolsshallbeofsufficientsizetoenabletheusualcontrolfunctionstobeeasilyperformedbyauserwearingglovesforimmersionsuits,inaccordancewithSOLAS1974[6]ChapterIII,Regulation33.Thenumberofcontrolsshouldbetheminimumnecessaryforsimpleandsatisfactoryoperation
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