# RX/TX transceiver

**URL:** <https://www.ruby-forum.com/t/rx-tx-transceiver/243049>\
**Category:** GNU Radio\
**Created:** [August 18, 2015, 9:27am UTC](https://www.ruby-forum.com/t/rx-tx-transceiver/243049 "2015-08-18T09:27:45Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Sadaf\_N](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/858c86/32.png) [@Sadaf\_N](https://www.ruby-forum.com/u/Sadaf_N)\
**Post date:** [August 18, 2015, 9:27am UTC](https://www.ruby-forum.com/t/rx-tx-transceiver/243049/1 "2015-08-18T09:27:45Z")

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Hi All,

I have some issues when using UHD sink and source blocks in same flow  
graph.

When I transmit data with UHD sink, I use tx\_sob and tx\_eob. I don’t get  
any underflow error.

But, the problem is that I can see all data sent by the TX path, in the  
RX  
path.

I don’t understand how this can be possible because when I use tx\_sob  
and  
tx\_eob, I can’t be in RX and TX mode in same time.

I use a N210 USRP with a WBX daugtherboard.

Thanks.

Marius

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**Author:** ![mariusc](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/m/ee7513/32.png) [@mariusc](https://www.ruby-forum.com/u/mariusc)\
**Post date:** [August 18, 2015, 4:17pm UTC](https://www.ruby-forum.com/t/rx-tx-transceiver/243049/2 "2015-08-18T16:17:16Z")

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There’s enough leakage between the TX and RX paths (inevitable) that  
your RX will see your TX side transmissions.

On 2015-08-18 03:26, Marius Cachelin wrote:

> I use a N210 USRP with a WBX daugtherboard.
> 
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