# How to use stream tags

**URL:** <https://www.ruby-forum.com/t/how-to-use-stream-tags/230335>\
**Category:** GNU Radio\
**Created:** [June 11, 2014, 10:06am UTC](https://www.ruby-forum.com/t/how-to-use-stream-tags/230335 "2014-06-11T10:06:23Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![jason\_sam](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/7993a0/32.png) [@jason\_sam](https://www.ruby-forum.com/u/jason_sam)\
**Post date:** [June 11, 2014, 10:06am UTC](https://www.ruby-forum.com/t/how-to-use-stream-tags/230335/1 "2014-06-11T10:06:23Z")

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Hi there,  
I have used the gnuradio and usrp to implement a three nodes poll  
network and that works perfectly.  
Now I want to implement a tdma network.  
I notice the stream tag can be used to implement synchronization , but  
I don’t know how to use it.  
I search the web and found little useful information about how to use  
the stream tag(or i just don’t get it).  
can anybody show me some material?some code using the stream tag would  
be much better.  
Appreciate in advance.