https://devzone.nordicsemi.com/f/nordic-q-a/16074/radio-off-notification-and-relationship-to-distanceThe radio notification tutorial ( devzone.nordicsemi.com/.../) says: &quot;The distance is the time window before/after the radio goes active. The radio events are radio_on and radio_off, e.g. a notification distance of 800&#181;s corresponds to a radio notificationen-USTelligent Community 13Tue, 30 Aug 2016 12:00:06 GMThttps://devzone.nordicsemi.com/thread/61308?ContentTypeID=1Tue, 30 Aug 2016 12:00:06 GMT137ad170-7792-4731-bb38-c0d22fbe4515:de70f5bb-fc2b-4bad-8315-358e5e6f6eadarchangel689<p>Thank you!</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/61307?ContentTypeID=1Tue, 30 Aug 2016 06:08:50 GMT137ad170-7792-4731-bb38-c0d22fbe4515:5777855a-4355-4f0a-a402-4e95c8150254&#216;yvind<p>The INACTIVE notification is right after the radio goes inactive, regardless of the notification distance configured. In other words, the notification distance only applies to the ACTIVE signal, if enabled.</p> <p>Note that the timings (ACTIVE notification distance, the phrase &quot;right after the radio goes inactive&quot;) refers to the instance where the software interrupt is set pending. The time you observe that the interrupt handler is executing may vary depending on the CPU activity at the different priority levels.</p> <p>Hope this makes things clearer.</p><div style="clear:both;"></div>