# Not getting constellation output

**URL:** <https://www.ruby-forum.com/t/not-getting-constellation-output/239517>\
**Category:** GNU Radio\
**Created:** [March 3, 2014, 6:51am UTC](https://www.ruby-forum.com/t/not-getting-constellation-output/239517 "2014-03-03T06:51:50Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![musicdenotation](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/m/ea666f/32.png) [@musicdenotation](https://www.ruby-forum.com/u/musicdenotation)\
**Post date:** [March 3, 2014, 6:51am UTC](https://www.ruby-forum.com/t/not-getting-constellation-output/239517/1 "2014-03-03T06:51:50Z")

</div>

1).I am not finding QT GUI Constellation block/ QT GUI Frequency sink  
blocks s in my GNU Radio 3.6.5. How to integrate those blocks in to my  
GNU Radio?.  
2).When I tried to execute the enclosed GRC file, I am not finding any  
constellation output.  
3). I tried by attaching Scope/FFT sinks at the output but not getting  
any waveforms.

Please resolve my problem. Any help is accepted and appreciated.

The GRC file taken from the paper “rondeau-mpsk\_tutorial.pdf” (See page  
22)  
and my GRC is follows the above file and replaced QT GUI Costellation  
blocks replaced with Wx GUI Constellation block.