# USRP N200/N210 SBX carrier recovery

**URL:** <https://www.ruby-forum.com/t/usrp-n200-n210-sbx-carrier-recovery/231893>\
**Category:** GNU Radio\
**Created:** [September 4, 2014, 5:41pm UTC](https://www.ruby-forum.com/t/usrp-n200-n210-sbx-carrier-recovery/231893 "2014-09-04T17:41:27Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![addis\_a](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/a/c4cdca/32.png) [@addis\_a](https://www.ruby-forum.com/u/addis_a)\
**Post date:** [September 4, 2014, 5:41pm UTC](https://www.ruby-forum.com/t/usrp-n200-n210-sbx-carrier-recovery/231893/1 "2014-09-04T17:41:27Z")

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HI!  
I have a question about USRP. I am wondering if there is a carrier  
recovery module in USRP? I did some research and I found that the USRP  
has PLL and VCO components. But a friend told me such cheap devices like  
USRP are not likely to have such a component because it is so expensive  
(100000$ devices might have). So my question is:

1. Is there really a carrier recovery module in USRP?
2. If yes, Is this module used to sync carrier frequency and phase?
3. If yes, What is the precision/accuracy of the recovery module, like  
how many Hz.