[USRP-users] FW: DVB-x (was: Again performance issues B210, while BladeRF performs fine)

Ralph A. Schmid, dk5ras ralph at schmid.xxx
Thu Apr 2 04:43:07 EDT 2015


No problem, time is not an issue here.
 
I will have a look later and see if I find something that works.
 
Ralph, dk5ras :)
 
> > -----Original Message-----
> > From: USRP-users [mailto:usrp-users-bounces at lists.ettus.com] On Behalf
> > Of Ron Economos via USRP-users
> > Sent: Thursday, April 2, 2015 10:17 AM
> > To: 'usrp-users'
> > Subject: Re: [USRP-users] DVB-x (was: Again performance issues B210,
> > while BladeRF performs fine)
> >
> > Sorry for the late reply. Comcast blocks certain addresses on
> > re-mailers, and I missed your e-mail.
> >
> > I have a bunch of DVB-T test streams on my website. They are listed in
> > this post on the Nuand forum.
> >
> > http://nuand.com/forums/viewtopic.php?f=8&t=3499#p5124
> >
> > Ron
> >
> > Hi,
> >
> > I adjusted the subject...
> >
> > The issue with DVB-T were the 10 threads in FFT settings; reducing
> > this to one thread gives a stable and spectrum-wise OK looking signal,
> > around 40dB above noise when transmitted over a distance of one or two
> > meters. So I took my old laptop, went through the hassle installing a
> > completely new Windows 7 and the DVB-T receiver stuff (DVBViewer and a
> > RTL2832 based RX), and I was able to find "something" on the chosen
> > channel, with 55% signal strength, a garbled channel name showed up,
> > but no picture. At least somehow it looks like a DVB-T signal, when I
> > find some time I will try tweaking the settings if I can get real
> > reception. Oh, the receiver is OK, I can watch normal TV with it,
> > using just 15cm of wire as antenna. Next week I should have access to
> > a DVB-x antenna tester, maybe this beast can tell me more about the
> signal.
> >
> > What example with the supplied test.ts is recommended for being
> > received with a normal receiver?
> >
> > Ralph.
> >
> >
> >
> > _______________________________________________
> > USRP-users mailing list
> > USRP-users at lists.ettus.com
> > http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com





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