https://devzone.nordicsemi.com/f/nordic-q-a/13173/timeslot---how-turn-off-hfclk-crystalHi, when using timeslots I cannot turn off the external crystal that causes an higher consumption. I already read this post and tried to turn off the timer0 (using STOP and SHUTDOWN) but the crystal keep running. In the timeslot I do nothing, buten-USTelligent Community 13Thu, 14 Apr 2016 06:35:59 GMThttps://devzone.nordicsemi.com/thread/50219?ContentTypeID=1Thu, 14 Apr 2016 06:35:59 GMT137ad170-7792-4731-bb38-c0d22fbe4515:326f4133-79b6-43f6-a9e7-5e31473ea373stefano<p>I solved the problem by specifying <code>NRF_RADIO_HFCLK_CFG_XTAL_GUARANTEED</code> when making the request. This way the external clock is turned off when exiting the timeslot as expected.</p><div style="clear:both;"></div>