t a/libloragw/src/loragw_hal.c b/libloragw/src/loragw_hal.c
index 7271eac..e5770df 100644
--- a/libloragw/src/loragw_hal.c
+++ b/libloragw/src/loragw_hal.c
@@ -305,6 +305,11 @@ void lgw_constant_adjust(void) {
     // lgw_reg_w(LGW_MBWSSF_TRACKING_INTEGRAL,0); /* default 0 */
     // lgw_reg_w(LGW_MBWSSF_AGC_FREEZE_ON_DETECT,1); /* default 1 */
 
+    /* Improvement of reference clock frequency error tolerance */
+    lgw_reg_w(LGW_ADJUST_MODEM_START_OFFSET_RDX4, 1); /* default 0 */
+    lgw_reg_w(LGW_ADJUST_MODEM_START_OFFSET_SF12_RDX4, 4094); /* default 4092 */
+    lgw_reg_w(LGW_CORR_MAC_GAIN, 7); /* default 5 */
+
     /* FSK datapath setup */
     lgw_reg_w(LGW_FSK_RX_INVERT,1); /* default 0 */
     lgw_reg_w(LGW_FSK_MODEM_INVERT_IQ,1); /* default 0 */