https://devzone.nordicsemi.com/f/nordic-q-a/10716/gazell-device-transmission-timeout-periodHi, I am working with Gazell device and host example code from the Keil pack installer, using the default the data rate of 2MBit, so per Nordic&#39;s documentation the timeslot is set to 600 microseconds How long does a device wait on a Tx transmissionen-USTelligent Community 13Wed, 09 Dec 2015 14:26:25 GMThttps://devzone.nordicsemi.com/thread/40013?ContentTypeID=1Wed, 09 Dec 2015 14:26:25 GMT137ad170-7792-4731-bb38-c0d22fbe4515:938dc788-4923-4356-8e21-2edb08a184c3Hung Bui<p>Hi Rwyung,</p> <p>Most likely you have set the channel_selection_policy to NRF_GZLL_DEVICE_CHANNEL_SELECTION_POLICY_USE_SUCCESSFUL (this is the default one).</p> <p>&quot;By choosing the NRF_GZLL_DEVICE_CHANNEL_SELECTION_POLICY_USE_SUCCESSFUL policy, the Device will start sending packets on the channel it last had a successfully acknowledged transmission. This policy is the most robust against static interferers as once the Device finds a quiet channel it should be able to continue using this quiet channel.&quot;</p> <p>This may explain why you have interval of 6 milliseconds. Please have a look in the documentation <a href="http://infocenter.nordicsemi.com/topic/com.nordic.infocenter.sdk51.v10.0.0/gzll_02_user_guide.html?cp=4_1_0_5_0_10#freq">here</a>.</p><div style="clear:both;"></div>