Re: [Openbts-discuss] UMTS Bad Waveform

[Tim B. <tbl...@ou...>]

Hi Tom,

I have verified that I can transmit at the selected frequency (877mhz) and the power settings are good.  What log are you talking about?  

Tim

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> Date: Tue, 10 Feb 2015 18:00:51 -0800
> Subject: Re: [Openbts-discuss] UMTS Bad Waveform
> From: to...@ts...
> To: tbl...@ou...
> CC: ope...@li...
> 
> On Tue, Feb 10, 2015 at 5:09 PM, Tim Blake <tbl...@ou...> wrote:
> > Here is a screenshot of the same signal with the improved SA settings.
> > Something is definitely wrong.
> >
> > https://onedrive.live.com/redir?resid=AF7BB757AB4CF78!215950&authkey=!AMb1EOdRyFndrlE&v=3&ithint=photo%2cjpg
> 
> That looks like an empty carrier. What is your downlink power setting?
> Anything noticeable in the log?
> 
> Try verifying that you can transmit at the target frequency. You can
> do that with the tx_waveforms utility. Adjust frequency and gain
> accordingly.
> 
> $ /usr/local/lib/uhd/examples/tx_waveforms --freq 1e9 --rate 6.25e6 --gain 20
> 
>   -TT