https://devzone.nordicsemi.com/f/nordic-q-a/81572/unreliable-beacon-scanning-rates-with-nrf52-dongleHello, I&#39;ve been working on a simple application to scan for bluetooth packets being emitted by another system, which advertises at a consistent 10Hz. We apply a filter to exclude any unwanted advertising packets, then print relevant packet info plusen-USTelligent Community 13Thu, 11 Nov 2021 15:36:17 GMThttps://devzone.nordicsemi.com/thread/338631?ContentTypeID=1Thu, 11 Nov 2021 15:36:17 GMT137ad170-7792-4731-bb38-c0d22fbe4515:e2cc284b-843f-4142-9b56-637de268c9c8Sigurd<p>Some packet drop is&nbsp;absolutely&nbsp;<span>expected when it comes to advertising. You have RF interference, and&nbsp;there is also a small period in which the scanner/radio is inactive&nbsp;when it switches to scan on the next advertising&nbsp;channel.</span></p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/338580?ContentTypeID=1Thu, 11 Nov 2021 13:16:36 GMT137ad170-7792-4731-bb38-c0d22fbe4515:0ac9972e-b015-40fd-b103-fa294c002b1fCraigE<p>That&#39;s definitely improved things.</p> <p>Still dropping packets occasionally, maybe 7-10% over a 2 minute period, but maybe this is to be expected?</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/338542?ContentTypeID=1Thu, 11 Nov 2021 11:39:24 GMT137ad170-7792-4731-bb38-c0d22fbe4515:e70d0b34-77fe-486f-86e4-2159431ec1c2Sigurd<p>Try setting both window and interval to the same value. e.g. 160 for both.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/338381?ContentTypeID=1Wed, 10 Nov 2021 13:12:10 GMT137ad170-7792-4731-bb38-c0d22fbe4515:13258716-1f5c-45bc-9f6e-9eaa385c3afcCraigE<p>Interval is set at 10 and window at 160.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/338367?ContentTypeID=1Wed, 10 Nov 2021 12:06:47 GMT137ad170-7792-4731-bb38-c0d22fbe4515:a18a2337-9d34-446e-bbe7-72e8b4895839Sigurd<p>Hi,</p> <p>What scan interval and scan window are you using?</p><div style="clear:both;"></div>