diff --git a/Mk2_3phase_RFdatalog_temp/calibration.h b/Mk2_3phase_RFdatalog_temp/calibration.h
index caf3858..2819deb 100644
--- a/Mk2_3phase_RFdatalog_temp/calibration.h
+++ b/Mk2_3phase_RFdatalog_temp/calibration.h
@@ -48,7 +48,7 @@ inline constexpr float f_phaseCal{ 1 }; /**< Nominal values only */
 // For datalogging purposes, f_voltageCal has been added too. Because the range of ADC values is
 // similar to the actual range of volts, the optimal value for this cal factor is likely to be
 // close to unity.
-inline constexpr float f_voltageCal[NO_OF_PHASES]{ 0.8151F, 0.8184F, 0.8195F }; /**< compared with Sentron PAC 4200 */
+inline constexpr float f_voltageCal[NO_OF_PHASES]{ 0.80347F, 0.80333F, 0.80375F }; /**< compared with Sentron PAC 4200 */
 
 inline constexpr float lpf_gain{ 0 }; /**< setting this to 0 disables this extra processing */
 inline constexpr float alpha{ 0.002 };