# AGC on LimeSDR mini

**URL:** <https://discourse.myriadrf.org/t/agc-on-limesdr-mini/5305>\
**Category:** Lime Suite\
**Created:** [27 October 2019 00:51 UTC](https://discourse.myriadrf.org/t/agc-on-limesdr-mini/5305 "2019-10-27T00:51:05Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![javatai](https://avatars.discourse-cdn.com/v4/letter/j/dfb087/32.png) [@javatai](https://discourse.myriadrf.org/u/javatai)\
**Post date:** [27 October 2019 00:51 UTC](https://discourse.myriadrf.org/t/agc-on-limesdr-mini/5305/1 "2019-10-27T00:51:06Z")

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Hi All:  
I am using LimeSDR Mini, I tried check the “Enable AGC” on TRX Gain tab on LimeSuiteGUI, But when I use SoapyUtil --probe to check the AGC is on or not, it shows that Support AGC : No.

Is anything that I am not aware, pls help.

Hardware: LimeSDR Mini V1.2  
Software: LimeSuite 19.04.0-Release

Thanks you.

Anson

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**Author:** ![mzs](https://yyz2.discourse-cdn.com/flex034/user_avatar/discourse.myriadrf.org/mzs/32/2678_2.png) [@mzs](https://discourse.myriadrf.org/u/mzs)\
**Post date:** [27 October 2019 06:08 UTC](https://discourse.myriadrf.org/t/agc-on-limesdr-mini/5305/2 "2019-10-27T06:08:35Z")

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Both are right.

In the TSP Rx path of the LMS7002M chip there is the possibility of automatic gain control after the the signal is digital.  
[https://wiki.myriadrf.org/LimeMicro:LMS7002M\_Datasheet#RXTSP\_structure](https://wiki.myriadrf.org/LimeMicro:LMS7002M_Datasheet#RXTSP_structure)  
[https://wiki.myriadrf.org/LimeMicro:LMS7002M\_Datasheet#Automatic\_gain\_control](https://wiki.myriadrf.org/LimeMicro:LMS7002M_Datasheet#Automatic_gain_control)

And I suspect that Soapy is stating that there is no Support for AGC along the analogue signal path.

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**Author:** ![javatai](https://avatars.discourse-cdn.com/v4/letter/j/dfb087/32.png) [@javatai](https://discourse.myriadrf.org/u/javatai)\
**Post date:** [31 October 2019 02:30 UTC](https://discourse.myriadrf.org/t/agc-on-limesdr-mini/5305/3 "2019-10-31T02:30:45Z")

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Thanks you, Mzs,

I will check ,.

Cheers

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**Author:** ![csete](https://yyz2.discourse-cdn.com/flex034/user_avatar/discourse.myriadrf.org/csete/32/3326_2.png) [@csete](https://discourse.myriadrf.org/u/csete)\
**Post date:** [31 October 2019 21:47 UTC](https://discourse.myriadrf.org/t/agc-on-limesdr-mini/5305/4 "2019-10-31T21:47:39Z")

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As far as I can see, the limesuite library does not have any high-level API function to enable/disable AGC, so applications and API wrappers will probably have to do this through register I/O.

> <https://github.com/myriadrf/LimeSuite/blob/master/src/lime/LimeSuite.h>