ETSI EN 300 328 — Standard

About the Standard

Scope title: 2.4 GHz wideband transmission systems

ETSI EN 300 328 is held in the library in code form; it may be a market access mark, a sector scheme or the name of a piece of legislation — entries of this kind are not tied to a single standards organisation.

RF and Wireless Testing — What Does This Testing Field Cover?

The section below describes the field that code ETSI EN 300 328 belongs to; it is not the text of the standard or the regime itself. The scope title of the code is given above, and technical requirements are shared at the quotation stage.

RF and wireless testing shows that a device containing a radio uses the spectrum correctly and operates within the limits the relevant legislation allows. This family is a separate body of work from EMC: EMC addresses unwanted interference, whereas here INTENTIONAL emission is assessed.

Spectrum is a public and limited resource, and this determines the legal character of the field. A device spilling outside its permitted band or emitting excess power is not merely a technical defect but a violation that disrupts someone else's service. Radio conformity is therefore policed more strictly than other test fields and markets maintain their own national regimes.

Measurements run separately on the transmitter and receiver sides. On the transmitter side, output power, occupied bandwidth, frequency error, unwanted emissions, adjacent channel power and the power envelope are measured. On the receiver side, sensitivity, selectivity, blocking and spurious response rejection are assessed. The receiver side is often neglected, but in some bands it is a regulatory requirement.

Access protocol specific behaviours are a third axis: listen before talk (LBT), duty cycle, dynamic frequency selection (DFS) and transmit power control (TPC). These mechanisms enable spectrum sharing and it must be shown that they work correctly.

HUMAN EXPOSURE is the fourth axis and one of the most commercially critical. For devices used close to the body, SAR (specific absorption rate) is measured; for devices used at a distance, a field strength assessment is made. Limits and measurement methods vary by market; the same device is assessed separately for Europe and the United States.

Market regimes are decisive in this family and do not substitute for one another: the Radio Equipment Directive and ETSI harmonised standards in Europe, FCC authorisation in the United States (through a TCB for intentional radiators), ISED in Canada, MIC in Japan, KC in South Korea and SRRC in China each carry their own set of requirements. The same device requires a separate file for each market, and some markets impose a local representative or local testing requirement.

Module integration is the subject that raises the most questions in the field. Using a certified radio module does not automatically make the device compliant. A module certificate is valid for a defined antenna, a defined supply and defined conditions of use; if the antenna changes, the layout changes or the module is operated at a different power level, reassessment is required.

The presence of several radios in the same device (Wi-Fi + Bluetooth + cellular + NFC) gives rise to a simultaneous transmission assessment: SAR and unwanted emission measurements are made for the worst case in which the radios operate together.

Method groups in this field

Transmitter measurements
Output power, occupied bandwidth, frequency error, unwanted emissions, adjacent channel power, power spectral density.
Receiver measurements
Sensitivity, selectivity, blocking, spurious response rejection.
Spectrum sharing mechanisms
Verification of listen before talk, duty cycle, dynamic frequency selection and transmit power control.
Human exposure
SAR measurement (handheld and body-worn devices), field strength assessment, multi-radio scenarios.
Protocol conformity
Cellular network conformity testing, Bluetooth and Wi-Fi certification testing, GNSS performance.
Antenna measurements
Gain, radiation pattern, efficiency and total radiated power (TRP) measurements.

Commonly confused in this field

Using a certified module does not automatically make the device compliant; if the antenna, layout or power level changes, reassessment is required.
An FCC file does not replace a CE file; each market operates its own regime.
Receiver side measurements are a regulatory requirement in some bands; measuring only the transmitter produces an incomplete file.
SAR limits and measurement methods differ by market; a result in one market does not carry over to another.
For devices carrying several radios the simultaneous transmission scenario must be assessed; measuring them individually is not sufficient.
Some markets impose local testing or a local representative requirement; technical conformity alone does not secure market access.

Which decisions these results support

Market access under radio equipment legislation
Verification of the antenna and RF front end design
SAR and RF exposure conformity
Verification of module integration and the scope of reassessment
Determining the worst case in multi-radio scenarios

Structure of the Code

Published by: ETSI EN 300
Serial number: 328
Part: without partition

Codes in the library without release year is kept. The current version changes over time; If the year is specified in your specification, that version is taken as basis, if not specified, the most current version is applied.

Scope

RF and Wireless Testing

Related Tests and Services

A separate test page based on this code has not yet been released. The code falls within the scope of the following test families.

RF and Wireless Testing

Technical Requirements

Standard texts are copyright of the relevant organization; test condition, sample and acceptance criteria cannot be fitted here.

Technical requirements specific to your product, once we clarify the scope At offer stage shared in writing.

Relevant Product Groups and Legislation

This code is included in the standard tag of the product pages below.

These product pages carry notes for the following markets: European Union, United Kingdom, USA. Whether the standard is mandatory in the relevant market varies depending on the product group and the applicable legislation.

Regulations published with this code on the same product pages:

2014/35/EULVDThe Low Voltage Directive. Governs the electrical safety of equipment operating in the 50–1000 V AC range; the manufacturer makes the declaration, with no notified body involvement.
2014/30/EUEMCThe Electromagnetic Compatibility Directive. Covers both the interference a device emits into its environment (emission) and its resistance to interference from outside (immunity).
2011/65/EURoHSRestriction of certain hazardous substances in electrical and electronic equipment; an integral part of the CE declaration.
(AB) 2019/2021EcodesignEcodesign requirements for electronic displays. Includes on-mode power consumption, standby mode and repairability requirements.
(AB) 2019/2013Energy LabelEnergy labelling for electronic displays. Requires a separate class declaration for SDR and HDR modes and EPREL registration.
2014/53/EUREDThe Radio Equipment Directive. For a product with a radio interface, spectrum, EMC and electrical safety are assessed together; the 3.3(d)(e)(f) cybersecurity articles also apply.
2012/19/ABWEEEWaste electrical and electronic equipment. Requires product marking and registration with the collection system.
(EU) 2024/2847CRAThe Cyber Resilience Act. Cybersecurity requirements for products with digital elements; reporting from 11 September 2026, full application from 11 December 2027.
(AB) 1275/2008Ecodesign (networked standby)Minimum requirements for standby and off-mode power consumption in networked equipment.
(EU) 2022/2555NIS2 (indirect)Cybersecurity risk management for essential and important entities; a network-equipment supplier is affected through its customers' obligations.
(EC) 1907/2006REACHRegistration, evaluation, authorisation and restriction of chemicals; SVHC notification.
(EU) 2016/679GDPR (indirect)Devices that process personal data incur a data-protection-by-design obligation.
(EU) 2023/1542Batteries RegulationSustainability, safety and transparency for batteries. Carbon footprint declaration, recycled content and the battery passport apply on a staged timetable.
(AB) 2022/2380Common Charging InterfaceA common charging solution for certain radio equipment. A USB-C interface and declaration of charging information on the label are mandatory.
(AB) 2023/1670Ecodesign (smartphones)Ecodesign requirements for smartphones and tablets. Sets requirements for durability, repairability, spare parts and software-update duration.
(AB) 2023/1669Energy Label (smartphones)Energy labelling for smartphones and tablets; battery life, drop resistance and a repair score are declared on the label.
(AB) 617/2013Ecodesign (computers)Ecodesign requirements for computers and servers. Includes requirements for annual energy consumption, standby mode and power management.

Related Standards

Frequently Asked Questions

Is this standard mandatory for my product?

Whether it is mandatory depends on the product group, the target market and the applicable legislation. Once you tell us your product and market, we clarify in writing whether this standard is required.

How long does the test process take?

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Do you issue certification against this standard?

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