Hi I own a b210 and I have a gpsdo that's installed but i do not have the antenna yet. Can I use it as a 10mhz reference and pps until I obtain the antenna?

  • $\begingroup$ Are you talking about a USRP B210? $\endgroup$
    – David Hoelzer
    Oct 27, 2021 at 19:42
  • $\begingroup$ Hello and welcome to ham.stackexchange.com! $\endgroup$
    – rclocher3
    Oct 27, 2021 at 20:58
  • $\begingroup$ At David Yes and @rclocher3 Thank You! $\endgroup$
    – ShaneT
    Oct 28, 2021 at 0:26
  • $\begingroup$ @ShaneT that comment asking for clarification was a gentle hint to edit the question so it is complete. Assume comments disappear the moment someone reads them; they are not considered part of the Q&A, and are not persistent at all. $\endgroup$
    – user21417
    Feb 25 at 16:44

1 Answer 1


Yes, you can.

But you don't win as much: the more modern B210 GPSDOs aren't worlds better than the standard integrated TCXO of the B210 is, anyway. So, I'd recommend using clock source = internal until you get an active antenna for your GPSDO.

Generally, if you know you can work with the lower frequency accuracy or timing, why even bother with a GPSDO? All real-world receivers need to do frequency recovery, anyway, even if they had GPSDOs – unless nothing in the environment moves.

  • $\begingroup$ But what commands do I use to do this? (Use my GSPDO 10mhz reference and 1PPS) Is this done by UHD automatically? Or must I implement this via some command? What command do I issue to see if the B210 is using the GPSDO as I want? $\endgroup$
    – ShaneT
    Oct 28, 2021 at 0:24
  • $\begingroup$ in essence multi_usrp::set_clock_source. $\endgroup$ Oct 28, 2021 at 7:02

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