https://devzone.nordicsemi.com/f/nordic-q-a/64688/nrf51-broadcast-advertisingHow to 1. increase advertising frequency - Which BLE GAP parameter should be updated? 2. increase RSSI signal strength - My device is not battery operated, so there are no power constraints. Thanks, Rahulen-USTelligent Community 13Tue, 11 Aug 2020 06:27:51 GMThttps://devzone.nordicsemi.com/thread/263925?ContentTypeID=1Tue, 11 Aug 2020 06:27:51 GMT137ad170-7792-4731-bb38-c0d22fbe4515:e185dce4-9f36-45d1-941b-0c1af3985f44Karl Ylvisaker<p>Hello Rahul,</p> [quote user=""]1. increase advertising frequency - Which BLE GAP parameter should be updated?[/quote] <p>To increase advertising frequency you will need to reduce <a href="https://infocenter.nordicsemi.com/topic/com.nordic.infocenter.s140.api.v6.1.0/group___b_l_e___g_a_p___a_d_v___i_n_t_e_r_v_a_l_s.html">advertising interval</a><em>,&nbsp;</em>the minimum value is 20 ms. Keep in mind that there is added a random delay between 0 and 10 ms before every advertisement, as part of the BLE specification.</p> [quote user=""]2. increase RSSI signal strength - My device is not battery operated, so there are no power constraints.[/quote] <p>You can change your TX power using the SoftDevice function <a href="https://infocenter.nordicsemi.com/index.jsp?topic=%2Fcom.nordic.infocenter.s122.api.v8.0.0%2Fgroup___b_l_e___g_a_p___f_u_n_c_t_i_o_n_s.html&amp;anchor=gad10e80ba20ddab42d1753fd1be2d8c26">sd_ble_gap_tx_power_set</a>.<br />Which TX power levels is supported will depend on which nRF51 SoC and SoftDevice you are using.<br /><br />Best regards,<br />Karl</p><div style="clear:both;"></div>