# Sync External Reference Clock

**URL:** <https://discourse.myriadrf.org/t/sync-external-reference-clock/3177>\
**Category:** LimeSDR\
**Created:** [17 August 2018 03:46 UTC](https://discourse.myriadrf.org/t/sync-external-reference-clock/3177 "2018-08-17T03:46:32Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![MJPacifico](https://avatars.discourse-cdn.com/v4/letter/m/a87d85/32.png) [@MJPacifico](https://discourse.myriadrf.org/u/MJPacifico)\
**Post date:** [17 August 2018 03:46 UTC](https://discourse.myriadrf.org/t/sync-external-reference-clock/3177/1 "2018-08-17T03:46:33Z")

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I have three Lime SDR minis that I’m trying to synchronize to the same external clock. I’m trying to get them to all be in phase when I look at the signal using a GNUradio FFT GUI. Any help will be appreciated.