I am looking for specific radio_conf.h settings for the RAK3172-T:
#define TCXO_CTRL_VOLTAGE TCXO_CTRL_1_7V
#define TCXO_CTRL_VOLTAGE TCXO_CTRL_3_0V
#define RF_WAKEUP_TIME ( 1UL )
#define RF_WAKEUP_TIME ( 10UL )
I note that the RAK3172-SIP low level radio files use TCXO_CTRL_3_0V and (1UL), but it is not safe to assume that the RAK3172-T uses these same values.
There was a link posted in a different thread supposedly to the datasheet for the TCXO but the link goes to a regular crystal instead.