Re: [Discuss-gnuradio] USRP N210 Not transmitting simulated satellite signals

[Dan CaJacob]

GPS playback or simulation is *really* sensitive to underflows. If you have them, you're hosed. When playing back a GPS recording, I always read the file from a RAMdisk. SSDs (generally) and spinning disks just aren't fast enough usually, and sometimes your OS even gets in the way.

On Sat, Jun 23, 2018 at 6:58 AM Marcus Müller <address@hidden> wrote:

underruns mean your computer isn't fast enough at supplying samples to
the SDR device.
In other words, you can only solve that by optimizing performance of
you computer. You might need a better computer, or set up your computer
more efficiently; this might or might not be solvable by following the
windows-specific tips on http://files.ettus.com/manual/page_transport.h
tml#transport_udp . Chances are you just need a faster computer.

Best regards,
Marcus
On Sat, 2018-06-23 at 13:28 +0300, evans ryanada wrote:
> i  have cloned gps-sdr-sim and i have taken all the steps towards
> achieving GPS simulated signals unfortunately upon typing this
> command prompt . My micro controller can receive simulated GPS
> signals.
>
> working environment
> Windows 8
> Gnurado companion 3.7.11
>
> On the command prompt it is displaying UUUUU this i understand this
> is all about underan
> how can i sort my problem
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> Discuss-gnuradio mailing list
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Very Respectfully,

Dan CaJacob