# Running uhd\_fft with a rtlsdr stick

**URL:** <https://www.ruby-forum.com/t/running-uhd-fft-with-a-rtlsdr-stick/231945>\
**Category:** GNU Radio\
**Created:** [September 8, 2014, 5:53pm UTC](https://www.ruby-forum.com/t/running-uhd-fft-with-a-rtlsdr-stick/231945 "2014-09-08T17:53:51Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![addis\_a](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/a/c4cdca/32.png) [@addis\_a](https://www.ruby-forum.com/u/addis_a)\
**Post date:** [September 8, 2014, 5:53pm UTC](https://www.ruby-forum.com/t/running-uhd-fft-with-a-rtlsdr-stick/231945/1 "2014-09-08T17:53:51Z")

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is it possible to run uhd\_fft directly from the IQ data coming over usb  
from an rtlsdr stick?  
or is this only for use with an ettus usrp device?

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<div class="post-metadata">

**Author:** ![benhiller](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/b/8e7dd6/32.png) [@benhiller](https://www.ruby-forum.com/u/benhiller)\
**Post date:** [September 8, 2014, 5:58pm UTC](https://www.ruby-forum.com/t/running-uhd-fft-with-a-rtlsdr-stick/231945/2 "2014-09-08T17:58:10Z")

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If you want to do the equivalent of uhd\_fft for non-Ettus devices, just  
use osmocom\_fft

On 2014-09-08 11:52, Ben H. wrote:

> is it possible to run uhd\_fft directly from the IQ data coming over usb from an  
> rtlsdr stick?  
> or is this only for use with an ettus usrp device?
> 
> * * *
> 
> Discuss-gnuradio mailing list  
> [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid)  
> [Discuss-gnuradio Info Page](https://lists.gnu.org/mailman/listinfo/discuss-gnuradio) [1]

Links:

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<div class="post-metadata">

**Author:** ![benhiller](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/b/8e7dd6/32.png) [@benhiller](https://www.ruby-forum.com/u/benhiller)\
**Post date:** [September 8, 2014, 6:03pm UTC](https://www.ruby-forum.com/t/running-uhd-fft-with-a-rtlsdr-stick/231945/3 "2014-09-08T18:03:06Z")

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should I already have that installed due having installed gr-osmosdr or  
do I need to get it from somewhere else?

I was thinkinkg of having a go with multimode.py as well, thats your  
piece of work i think?

On Monday, 8 September 2014, 16:57, “[removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid)”  
[removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote:

If you want to do the equivalent of uhd\_fft for non-Ettus devices, just  
use osmocom\_fft

On 2014-09-08 11:52, Ben H. wrote:  
is it possible to run uhd\_fft directly from the IQ data coming over usb  
from an rtlsdr stick?

> 

or is this only for use with an ettus usrp device?

> * * *

Discuss-gnuradio mailing list [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid)  
[Discuss-gnuradio Info Page](https://lists.gnu.org/mailman/listinfo/discuss-gnuradio)