# "Sensitivity" parameter in Freq Modulation block in GRC

**URL:** <https://www.ruby-forum.com/t/sensitivity-parameter-in-freq-modulation-block-in-grc/240732>\
**Category:** GNU Radio\
**Created:** [April 28, 2014, 8:49am UTC](https://www.ruby-forum.com/t/sensitivity-parameter-in-freq-modulation-block-in-grc/240732 "2014-04-28T08:49:13Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Detlef\_R](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/d/58f4c7/32.png) [@Detlef\_R](https://www.ruby-forum.com/u/Detlef_R)\
**Post date:** [April 28, 2014, 8:49am UTC](https://www.ruby-forum.com/t/sensitivity-parameter-in-freq-modulation-block-in-grc/240732/1 "2014-04-28T08:49:13Z")

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Hi  
I am trying to generate an LFM signal using GNU radio and USRP but I am  
not sure about the interpretation of “Sensitivity” parameter in “Freq  
Modulation” block that what are its units, what is the possible range  
and how does it effect the characteristics of modulated waveform/signal?

Regards  
Touseef Ali