On 06/30/2011 07:13 AM, Aleš Povalač wrote:
> Dear all,
>
> I have been testing USRP2 with WBX board (#957). Using GNU Radio, I
> have created a simple CW TX system. The problem: output signal is
> oscillating when I set the TX frequencies to 900MHz band. Signal
> output (in time domain) at TX/RX
Hi Matt,
thanks for the answer. The problem is not in analyzer setup. Using
large RBW and zero span, it acts as an envelope demodulator and shows
the signal in time domain. Since I used the USRP2 to generate CW
signal only (I=1, Q=0, constant in time), there should be stable
transmitted power over
Sorry, I checked the signal at MODOUT again and it is _not_ stable as
I wrote before. So the AGC loop is probably OK and just reacts to
wrong signal on its input.
The signal is weird even at the DAC outputs. Enclosed is the screen of
IOUTN_A and IOUTP_A obtained with ./tx_waveforms --rate 25 -
Hello everyone,
I'm using a USRP platform with XCVR2450 Transceivers daugtherboard for
sensing experiments. I'm sweeping the WiFi band from 2.4 to 2.5 GHz knowing
which channels are used by the APs (i.e. Ch1, Ch6 and Ch11). I considered
the script usrp_spectrum_sense.py with a decimation factor e
I have sent this to usrp-us...@lists.ettus.com but somehow it doesn't
work. Anyway here the email.
Hi all,
after a week of tests I can conclude that (streaming a big file for
example) if the server has the disk cache full then the uhd::device::send
method last longer than expected (see picture att
Hi,
Based on gr_firdes.cc/gr_firdes.h/gfr_firdes.i I developed a similar class
to generate filter taps for a Raised Cosine filter. The following is the
SWIG interface file and the C++ header with .cc file containing the
algorithm for the static function declared in the header. The compilation
goes
Well, it seems I have solved the problem for myself. Until now I did
not know that USRP allows to set center freq in steps much smaller
than PLL synthesis using DSP processing. This may work well for most
signals but during CW (I=1, Q=0) the resulting signal is not perfect,
maybe because of non-ide
Regards,
hi anyone has the code of usrp2_sense_spectrum.py working. I failed to make
the plotsignal analyzer and the computer
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I just installed (probably successfully) uhd and gnuradio from source code.
But somehow I got following errors: I just want to know that whether they
are significant or not.
I downloaded gnuradio from git repository and uhd also from there.
Also got microblaze tool from gnuradio/tools
Let me kn
Hi,
Perhaps you haven't installed UHD properly. Here are the instructions
for building it correctly on Ubuntu-11.04.
Step 01.00: Download the UHD sources from the Ettus research git repository.
$ mkdir ettus
$ cd ettus
$ git clone git://ettus.sourcerepo.com/ettus/uhd.git
Step 01.01: Bui
Sorry for the brevity, traveling abroad and only have my phone. I am
the author of the MAC code in cgran and have a paper on the work, give
it a read: Enabling MAC Protocol implementations on software-defined
radios. It gives you an idea of what all we did to gnu radio to build
Macs and what the sp
Hi All,
I am currently trying to build GNU Radio for my E100, including GRC. In
the process, I've run into a few issues:
- We don't have wxPython in the opkg repository. This is needed to use
flowgraphs in GRC, and although there is a text interface, the flowgraph
interface would be ideal.
Sorry for replying so late.
I've been using pipes with file sources and sinks.
One trick you have to do is start the consumer before the producer. For
some reason if the writing on the pipes starts before the reading, things
get messed up.
Try starting the transmitter reading the pipe before y
I am trying to find http://gnuradio.org/redmine/wiki/1/ubuntuInstall
Can anyone help?
Thanks,
Frank
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Sorry for replying so late.
I've been using pipes with file sources and sinks.
One trick you have to do is start the consumer before the producer.
For some reason if the writing on the pipes starts before the reading,
things get messed up.
Try starting the transmitter reading the pipe befor
Try this: http://gnuradio.org/redmine/projects/gnuradio/wiki/UbuntuInstall
On Fri, Jul 1, 2011 at 1:51 PM, Frankie Rawlins wrote:
> I am trying to find http://gnuradio.org/redmine/wiki/1/ubuntuInstall
>
> Can anyone help?
>
> Thanks,
>
> Frank
>
> ___
Hi Frank,
It would seem as if your links are exceptionally outdated. ;-)
Try this one instead:
http://gnuradio.org/redmine/projects/gnuradio/wiki/UbuntuInstall
Cheers,
Chris
On 7/1/2011 1:51 PM, Frankie Rawlins wrote:
I am trying to find http://gnuradio.org/redmine/wiki/1/ubuntuInstall
C
Thank you forall your replies.
Now have it.
Regards,
Frank
Date: Fri, 1 Jul 2011 14:23:09 -0400
From: christopher.d...@ll.mit.edu
To: discuss-gnuradio@gnu.org
Subject: Re: [Discuss-gnuradio] Can't find web page
Hi Frank,
It would seem as if your links are
Thank you forall your replies.
Now have it.
Regards,
Frank
Also, if you're just starting down the "build and install Gnu Radio +
UHD" road, you might consider:
http://www.sbrac.org/files/build-gnuradio
Which is a script for recent Fedora and Ubuntu releases that downloads
UHD + Gnu Radio +
Need an .htacess rewrite rule for the new redmine url layout (please)
RewriteEngine On
RewriteRule
http://httpd.apache.org/docs/2.0/misc/rewriteguide.html
-josh
On 07/01/2011 11:33 AM, Frankie Rawlins wrote:
>
> Thank you forall your replies.
>
> Now have it.
>
> Regards,
>
> Frank
>
On Fri, Jul 1, 2011 at 14:51, Marcus D. Leech wrote:
> **
>
> Sorry for replying so late.
>
> I've been using pipes with file sources and sinks.
> One trick you have to do is start the consumer before the producer. For
> some reason if the writing on the pipes starts before the reading, things
That's what it should do.
But in practice, I've seen some blocks locking if their writes were
blocked. That's why I suggested starting in this order.
The other issue is that if you have multiple FIFOs, then the only
*reliable* mechanism for making it work is to have the *reader* open
non-b
Since I don't have much experience running wxPython I'll leave it to someone
more knowledgeable for commenting. In regards to the configuration you'll have
to be more specific about your issue ... is it that you want to build usrp1
module and it's not building or is it some other component? I
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