# Importing and using blocks from new version of GRC to the previous version

**URL:** <https://www.ruby-forum.com/t/importing-and-using-blocks-from-new-version-of-grc-to-the-previous-version/236966>\
**Category:** GNU Radio\
**Created:** [October 15, 2013, 7:27pm UTC](https://www.ruby-forum.com/t/importing-and-using-blocks-from-new-version-of-grc-to-the-previous-version/236966 "2013-10-15T19:27:58Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![alcina](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/a/a587f6/32.png) [@alcina](https://www.ruby-forum.com/u/alcina)\
**Post date:** [October 15, 2013, 7:27pm UTC](https://www.ruby-forum.com/t/importing-and-using-blocks-from-new-version-of-grc-to-the-previous-version/236966/1 "2013-10-15T19:27:58Z")

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Hi all!  
While trying to use the latest version of GR on Windows, I am receiving  
the same error discussed here (No module named  
wxgui\_swig):[http://www.mail-archive.com/removed\_email\_address@domain.invalid/msg44400.html](http://www.mail-archive.com/removed_email_address@domain.invalid/msg44400.html)  
The new version of the GR is particularly appealing to me as in the GRC,  
there seem to be are “Fading model” and “Frequency selective fading”  
blocks that I would like to use.  
Is there a way to somehow “import” these blocks so that I can use them  
in version 2.6?  
Thanks!  
Regards,Kresimir

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**Author:** ![Kresimir\_Dabcevic](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/k/6f9a4e/32.png) [@Kresimir\_Dabcevic](https://www.ruby-forum.com/u/Kresimir_Dabcevic)\
**Post date:** [October 16, 2013, 5:41pm UTC](https://www.ruby-forum.com/t/importing-and-using-blocks-from-new-version-of-grc-to-the-previous-version/236966/2 "2013-10-16T17:41:34Z")

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Hi Kresimir,

sadly, the answer to your question is “no”, unless you start backporting  
stuff yourself.  
I know this is kind of not really a satsfying answer, but: If you don’t  
really really rely on GNU Radio running under windows, I strongly  
recommend looking into linux as GNU Radio development platform; maybe  
first try running it in a virtual machine, see if it is big of a problem  
using linux.

Then: If you want to sound “real” channels (big scale outdoor ones, at  
least), try the excellent gr-channelsounder:  
[GitHub - gbaier/gr\_channelsounder: a correlation channel sounder for GNU Radio](https://github.com/gbaier/gr_channelsounder) that runs under GR 3.6; it  
will give you channel models that can be directly used.

Hope that helped anyway,  
Marcus