https://devzone.nordicsemi.com/f/nordic-q-a/11944/nrf51822-dcdc-tx-distanceDear all: My device uses LDO mode and DC-DC mode respectively, and the distance is different.In 4dbm, the distance of the LDO mode is 110m, while the LDO mode is in the 70m.Who can tell me reason?en-USTelligent Community 13Thu, 18 Feb 2016 03:02:29 GMThttps://devzone.nordicsemi.com/thread/45238?ContentTypeID=1Thu, 18 Feb 2016 03:02:29 GMT137ad170-7792-4731-bb38-c0d22fbe4515:ca5dc6c6-654a-4083-8fc9-aeebcfea6f4azcmm<p>version 3 AB chip,. Yeah,i test .my device can use ldo or dc-dc mode,the tx distance is different.Schematic diagram of the DC-DC mode is consistent with the official.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/45239?ContentTypeID=1Wed, 17 Feb 2016 11:32:35 GMT137ad170-7792-4731-bb38-c0d22fbe4515:e37164e9-e655-4e3c-b386-841ca2d9098eEinar Thorsrud<p>Which chip are you using? For the nRF51 can expect approximately 1 dB less sensitivity in RX. However you should not see any significant change in the TX output power or SNR. Have you tested the exact same devices in the exact same conditions?</p><div style="clear:both;"></div>