Is the 2.4GHz proprietary mode of nRF 52/53/54 series still DSSS?

RE: Is the 2.4GHz proprietary mode of nRF 52/53/54 series still DSSS?

fredrikgk — Thu, 22 Jan 2026 13:40:53 GMT

Hi Jin,

EBS typically uses Nordic 1 Mbps or 2 Mbps proprietary modes which are GFSK. No spread spectrum techniques are used, but that is not required to certify under EN 300 328.

Best regards,
Fredrik

RE: Is the 2.4GHz proprietary mode of nRF 52/53/54 series still DSSS?

Kwu — Thu, 22 Jan 2026 10:48:14 GMT

Hi Fredrik,

Could you explain how ESB work? Does it use GFSK and apply spread spectrum?

Thanks

RE: Is the 2.4GHz proprietary mode of nRF 52/53/54 series still DSSS?

Jin Lin — Mon, 19 Jan 2026 08:36:31 GMT

Thank you so much Fredrik for your clarification.

RE: Is the 2.4GHz proprietary mode of nRF 52/53/54 series still DSSS?

fredrikgk — Thu, 15 Jan 2026 13:40:13 GMT

Hi Jin, Enhanced Shockburst (ESB) uses wide band modulation and thus fulfils the requirements in EN 300 328 section 4.3.2 "Requirements for other types of Wideband Data Transmission". ESB on 52/53/54 can thus be certified under EN 300 328 similar to Bluetooth Low Energy.

Best regards,
Fredrik