Delay between two LMIC_setTxData2 / os_setTimedCallback

[jontxu70]

Hi all

I want to reduce the time it takes between two LMIC_setxdata2 using a SX1262 module.

I don't know what is the purpose of tx_rampup and os_setTimedCallback, is there any way to reduce from 30 minutes to less?

Do I have to change elsewhere?

Thank you in advance