This should have gone to the usrp-users list. 

But anyway:

https://kb.ettus.com/Ordering_and_Fulfillment_Help#Return_Policy



Sent from my iPhone

> On Nov 14, 2021, at 9:00 AM, sp h <stackprogra...@gmail.com> wrote:
> 
> 
> I had a daughterboard UBX 160 for USRP, but after 5 months of working, it can 
> not transmit any signal...
> Led TX is on but on the spectrum, I can not see any data signal, I can see a 
> weak carrier?
> how can repair UBX160 USRP? really it is the damage?
> 
> thanks in advance
> 

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