ETSI EN 300 328 – version change

Important News for radio components within the license-free band of 2.4 GHz:

ETSI EN 300 328 – version change


In July 2019, ETSI published the harmonized standard EN 300 328 V2.2.2 as an update version of the current version V2.1.1.
EN 300 328 applies to Wideband Data Transmission equipment operating in the 2.4 GHz band.
Published in the Official Journal of the European Union, this harmonized standard is covering the essential requirements of article 3.2 of Directive 2014/53/EU.

Hence, EN 300 328 V.2.1.1 will expire on August 6, 2021, we would like to prepare you early and inform you about the major changes.

What has changed?

Short overview


Up to now: V2.1.1 New in V2.2.2
Receiver Blocking Performance Criteria Adjustment in requirements for receiver blocking measurement
alternative performance criteria by the manufacturer PER or FER of less than or equal to 10%
Receiver Blocking Parameters Clearer definition of the three categories and thus changes in the assignment of the single categories
Category 1, 2, 3 Blocking signal output
-47 dBm/-53 dBm
Rise of the blocking signal output to -34 dBm
Spurious Emission Change of limit values
470 MHz to 862 MHz: -54 dBm
862 MHz to 1 GHz: -36 dBm
470 MHz to 694 MHz: -54 dBm
694 MHz to 1 GHz: -36 dBm


Further details:

The main change is the revision of the rules and measurements for receiver blocking and clarification of terminology used for the two types of equipment covered by the standard.

Receiver blocking is “a measure of the ability of the equipment (being tested) to receive a wanted signal on its operating channel without exceeding a given degradation in the presence of an unwanted signal (blocking signal) on frequencies other than those of the operating band.”


  • Receiver Blocking Performance criteria

For equipment that supports a feature to measure the packet or frame error rate (PER/FER), the minimum performance criterion shall be a PER or FER of less than or equal to 10%.

The manufacturer may only declare alternative performance criteria for equipment that does not support a feature to measure PER or FER, as long as the minimum performance of no loss of the wireless transmission function needed for the intended use of the equipment is ensured.

  • Receiver blocking parameters

The required blocking signal levels for all categories have effectively been increased from -47 dBm/-53 dBm to -34 dBm.
Low interference signals apply to the low operating channel and high interference signals apply to the high operating channels. In-band antenna gain must be taken into account for conducted measurements.

  • Spurious Emission

The limits of transmitter spurious emission between 470 MHz to 1 GHz have been changed. The previous ranges 470 MHz to 862 MHz and 862 MHz to 1 GHz have been modified to 470 MHz to 694 MHz and 694 MHz to 1 GHz with respective limits of -54 dBm and -36 dBm.


Please note: This change will require a mandatory re-test for all devices to satisfy V2.2.2 requirements following the August 6, 2021 transition date.

Forewarned is forearmed: We highly recommend to choose the measurements according to ETSI EN 300 328 V2.2.2 for new approvals of products that require a testing – even in the transition period.

Devices that are already placed on the European market and are not being re-produced can continue to run with version V2.1.1;
Devices that are being re-produced need to update to V2.2.2 after the end of the transition period (August 6, 2021).

As a global player with labs offering a huge variety of radio measurements we are of course fully prepared to conduct measurements according the new version of ETSI EN 300 328 V2.2.2 – and so should you be!

Our certification team will prepare your device for CE mark and build the essential base for your professional market release.

Please do not hesitate to contact us with your burning questions –
Our promise is, to guide you through your entire approval process!