https://devzone.nordicsemi.com/f/nordic-q-a/55960/range-calibrationHey, Currently I have been working on a project in which I have to calibrate the range of the bluetooth, basically I need very short range of about a meter. Could anyone please suggest a way to achieve this task. Thanks in advance!!en-USTelligent Community 13Mon, 13 Jan 2020 08:32:27 GMThttps://devzone.nordicsemi.com/thread/228728?ContentTypeID=1Mon, 13 Jan 2020 08:32:27 GMT137ad170-7792-4731-bb38-c0d22fbe4515:683fb428-2ff7-4efa-b09b-5490092ed036Amir Hamja<p>thank you Vidar berg.</p> <p>&nbsp; can you tell me how to calibrate range through RSSI value, means witch function I Call to upload RSSI value in BLE STACK, and witch stack&nbsp; I write the program. If you explain a little bit about this, then it will help me a lot.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/226944?ContentTypeID=1Fri, 27 Dec 2019 14:27:51 GMT137ad170-7792-4731-bb38-c0d22fbe4515:ab10fce6-34db-4e9a-8a2e-048194b72650Vidar Berg<p>Hi,</p> <p>You can use&nbsp;<a title="sd_ble_gap_tx_power_set" href="https://infocenter.nordicsemi.com/topic/com.nordic.infocenter.s140.api.v7.0.1/group___b_l_e___g_a_p___f_u_n_c_t_i_o_n_s.html?cp=4_5_3_1_2_1_3_41#gad10e80ba20ddab42d1753fd1be2d8c26">sd_ble_gap_tx_power_set</a>() to lower the TX output power. It&#39;s 0 dBm by default.</p><div style="clear:both;"></div>