# Tx without Calibration
**URL:** https://discourse.myriadrf.org/t/tx-without-calibration/4014
**Category:** LimeSDR
**Created:** [16 January 2019 10:54 UTC](https://discourse.myriadrf.org/t/tx-without-calibration/4014 "2019-01-16T10:54:59Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@f5oeo](https://discourse.myriadrf.org/u/f5oeo)
#### Post date: [16 January 2019 10:54 UTC](https://discourse.myriadrf.org/t/tx-without-calibration/4014/1 "2019-01-16T10:54:59Z")
As I understand, LMS\_SaveConfig should save all parameters from registers of LMS.
In order to avoid to calibrate at each time, after setting all parameters once (frequency,SR,Calibrate) I save with LMS\_SaveConfig.
For next Tx, I load all parameters with LMS\_LoadConfig. It nearly works, but it seems that IQ calibration is not saved as I could see a DC offset on the spectrum.
Is it the normal way of using it, is there an other method to handle it ?
Here are the results :
First transmission with calibration and SaveConfig
2nd transmission without Calibration but with LoadConfig
---
### Author:  [@ricardas](https://discourse.myriadrf.org/u/ricardas)
#### Post date: [16 January 2019 15:35 UTC](https://discourse.myriadrf.org/t/tx-without-calibration/4014/2 "2019-01-16T15:35:07Z")
You’re right, the DC offset gets loaded from file into the register, but it does not take effect. LMS\_LoadConfig needs to be updated to include some bits flipping to actually further load the values from registers into where they make effect.
---
### Author:  [@f5oeo](https://discourse.myriadrf.org/u/f5oeo)
#### Post date: [16 January 2019 15:37 UTC](https://discourse.myriadrf.org/t/tx-without-calibration/4014/3 "2019-01-16T15:37:35Z")
Ok, thanks for confirming this issue.
---
### Author:  [@andrewback](https://discourse.myriadrf.org/u/andrewback)
#### Post date: [16 January 2019 15:44 UTC](https://discourse.myriadrf.org/t/tx-without-calibration/4014/4 "2019-01-16T15:44:52Z")
Added an issue:
>