NRF51822 dcdc TX distance

[zcmm]

Dear 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?

[Einar Thorsrud]

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?