# Is there any way to detect a transmission?

**URL:** <https://forum.qoitech.com/t/is-there-any-way-to-detect-a-transmission/300>\
**Category:** Support\
**Created:** [July 23, 2019, 7:31am UTC](https://forum.qoitech.com/t/is-there-any-way-to-detect-a-transmission/300 "2019-07-23T07:31:12Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![eloi](https://avatars.discourse-cdn.com/v4/letter/e/3ec8ea/32.png) [@eloi](https://forum.qoitech.com/u/eloi)\
**Post date:** [July 23, 2019, 7:31am UTC](https://forum.qoitech.com/t/is-there-any-way-to-detect-a-transmission/300/1 "2019-07-23T07:31:12Z")

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Good morning,

I want to measure the power consumption in transmission for a NBIoT sensor, is there any technique to auto detect the communication wave, or just do it manually?

Thank you!

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**Author:** ![bjorn.rosqvist](https://dub1.discourse-cdn.com/flex017/user_avatar/forum.qoitech.com/bjorn.rosqvist/32/238_2.png) [@bjorn.rosqvist](https://forum.qoitech.com/u/bjorn.rosqvist)\
**Post date:** [July 23, 2019, 8:47am UTC](https://forum.qoitech.com/t/is-there-any-way-to-detect-a-transmission/300/2 "2019-07-23T08:47:55Z")

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Hi,

If you have the possibility to set a GPO high, on your device, when transmission starts then you can connect this GPO to one Otii Arc GPI and monitor this GPI.

With Enterprise license, you could in scripting (lua, python or whatever scripting language wanted):

1. Start a recording
2. Monitor your GPI
3. When this GPI switches high, notice the timing and use this later when crop
4. When transmission is done, stop recording
5. Crop data, with some extra timing before and after transmission, not to miss any data
6. Save project

I hope this helps!