NCS subsys/esb: PTX never gets ACK from a receiver that ACKs LOGITacker&#39;s identical payload (DPL S1 bit)https://devzone.nordicsemi.com/f/nordic-q-a/128739/ncs-subsys-esb-ptx-never-gets-ack-from-a-receiver-that-acks-logitacker-s-identical-payload-dpl-s1-bitSummary I&#39;m transmitting a raw Logitech Unifying pairing frame from the NCS standard ESB library ( subsys/esb , ESB_PROTOCOL_ESB_DPL , 2 Mbps, PTX) on an nRF52840. The transmit runs, but I never get an ACK : ESB_EVENT_TX_SUCCESS never fires — only ESB_EVENT_TX_FAILEDen-USTelligent Community 13Fri, 17 Jul 2026 14:21:41 GMTRE: NCS subsys/esb: PTX never gets ACK from a receiver that ACKs LOGITacker's identical payload (DPL S1 bit)https://devzone.nordicsemi.com/thread/569208?ContentTypeID=1Fri, 17 Jul 2026 14:21:41 GMT137ad170-7792-4731-bb38-c0d22fbe4515:9aae1dc0-3af1-4641-9598-a1ed8a754122Amanda Hsieh<p>Thanks for the nice sharing.&nbsp;</p><div style="clear:both;"></div>