https://devzone.nordicsemi.com/f/nordic-q-a/6037/sd_radio_request-returns-nrf_error_forbiddenHallo, I try to use the s310 timeslot API. I open a &quot;session&quot; and then request a timeslot: check( sd_radio_session_open( nrf_radio_signal_callback ) ); request_radio_slot(); ... void device_logic::request_radio_slot() { nrf_radio_request_ten-USTelligent Community 13Fri, 13 Mar 2015 15:52:16 GMThttps://devzone.nordicsemi.com/thread/21114?ContentTypeID=1Fri, 13 Mar 2015 15:52:16 GMT137ad170-7792-4731-bb38-c0d22fbe4515:459b5586-2a22-43ad-9015-495dcf9761d2Torsten Robitzki<p>Thank you for clarification.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/21113?ContentTypeID=1Fri, 13 Mar 2015 15:48:53 GMT137ad170-7792-4731-bb38-c0d22fbe4515:827a6ed8-fbd8-4c53-8ca4-43dd69b92ac6Ulrich Myhre<p>Hi,</p> <p>The S130 Softdevice Specification v2.0 mention this in chapter 9.1:</p> <p><em>&quot;Note that the first request in a session must always be earliest possible to create the timing reference point for later timeslots. The application may also request to extend an on-going timeslot. Extension requests may be repeated, prolonging the timeslot even further.&quot;</em></p> <p>After requesting the first timeslot with EARLIEST, you should be able to request it again with the normal type.</p><div style="clear:both;"></div>