Re: [Discuss-gnuradio] [EXT] Re: Need support for USRP2

Hi Chesir,

I saw similar behavior with very recent X310s with UBX daughterboards.
It did help to revert to an earlier UHD version [0]. Maybe the issue is
related. Maybe it is not.

Cheers
Johannes

[0] https://github.com/EttusResearch/uhd/issues/257

Am 02.04.19 um 16:04 schrieb Chesir, Aaron M.:
> Marcus,
>
> I mis-spoke: I am using a common **receiver** application, and I am
> comparing the received spectrum when using either the N21 or the USRP2
> as the transmitter.
>
> Attached are the screen shots of the parameters of the UHD USRP Sink
> block, which is common when using either of the two boxes to transmit
> (other than the IP address).
>
> Attached also are the results of executing "uhd_usrp_probe" for each of
> the two boxes.
>
> I do not understand why I am seeing a healthy spectrum when receiving
> from the N210 transmitter, but nothing when receiving from the USRP2
> transmitter.
>
> Help.
>
> Thanks,
>
> Aaron
>
> *From:*Marcus D. Leech <patchvonbraun@gmail.com>
> *Sent:* Tuesday, April 2, 2019 9:34 AM
> *To:* Chesir, Aaron M. <achesir@mitre.org>; discuss-gnuradio@gnu.org
> *Subject:* Re: [EXT] Re: [Discuss-gnuradio] Need support for USRP2
>
> On 04/02/2019 09:20 AM, Chesir, Aaron M. wrote:
>
> When I generate a known good signal in the ISM band (902 MHz), I can
> use any other receiver with GRC and a good spectrum will be
> displayed. When I use the USRP2 with GRC, to receive and
> characterize energy , GRC offers no complaints, but GRC indicates no
> reception of any signal energy.
>
> What daughtercard do you have installed?  What gain setting are you using?
>
>
>
> *From:*Discuss-gnuradio
> <discuss-gnuradio-bounces+achesir=mitre.org@gnu.org>
> <mailto:discuss-gnuradio-bounces+achesir=mitre.org@gnu.org> *On
> Behalf Of *Marcus D. Leech
> *Sent:* Tuesday, April 2, 2019 9:06 AM
> *To:* discuss-gnuradio@gnu.org <mailto:discuss-gnuradio@gnu.org>
> *Subject:* [EXT] Re: [Discuss-gnuradio] Need support for USRP2
>
> On 04/02/2019 09:00 AM, Chesir, Aaron M. wrote:
>
> Folks,
>
> Apparently the USRP2 is no longer supported by GNUradio Companion.
>
> Do any of you have the source files that would allow one to use
> gr_modtool to build a GRC block for the USRP2: One to transmit
> and one to receive?
>
> Thanks,
>
> Aaron
>
> That isn't true.  You can even still use USRP1 with Gnu Radio.
>
>
>
>
> *From:* Discuss-gnuradio
> <discuss-gnuradio-bounces+achesir=mitre.org@gnu.org>
> <mailto:discuss-gnuradio-bounces+achesir=mitre.org@gnu.org> *On
> Behalf Of *Neel Pandeya
> *Sent:* Saturday, March 16, 2019 10:37 PM
> *To:* kristoff@skypro.be <mailto:kristoff@skypro.be>
> *Cc:* GNURadio Discussion List <discuss-gnuradio@gnu.org>
> <mailto:discuss-gnuradio@gnu.org>
> *Subject:* [EXT] Re: [Discuss-gnuradio] forum to learn more
> about signal-processing and SDR ?
>
> Hello Kristoff:
>
> These pages have links to resources that might be helpful to you.
>
> https://kb.ettus.com/Suggested_Videos
>
> https://kb.ettus.com/Suggested_Reading
>
> --Neel Pandeya
>
> On Sat, 16 Mar 2019 at 21:01, Ali Dormiani
> <sdormian@eng.ucsd.edu <mailto:sdormian@eng.ucsd.edu>> wrote:
>
> This book is also a great starting point and reference.
>
> Digital Signal Processing by Oppenheim and Schafer
>
> Also, here is a fun visual way of getting an alternative
> understanding of Fourier transforms.
>
> https://www.youtube.com/watch?v=spUNpyF58BY
>
> Have fun,
>
> Ali
>
> On Sat, Mar 16, 2019 at 2:24 PM Albin Stigö
> <albin.stigo@gmail.com <mailto:albin.stigo@gmail.com>> wrote:
>
> This book is a very good starting point:
>
> http://www.dspguide.com
>
> dsp.stackexchange.com <http://dsp.stackexchange.com> is
> a good place for questions.
>
> Good luck.
>
> Albin SM6WJM
>
> On Sat, Mar 16, 2019, 22:20 Kristoff <kristoff@skypro.be
> <mailto:kristoff@skypro.be>> wrote:
>
> Hi,
>
>
> One of the reasons I am currently using GNU Radio is
> to learn more about
> signal-processing and SDR.
>
> As the "discuss-gnuradio" list is about gnuradio
> itself, what would be a
> good mailing-list, newsgroup or forum to ask more
> generic questions
> about signal-processing?
>
>
>
>
> Kristoff (ON1ARF)
>
>
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>
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