On Tue, Sep 15, 2009 at 07:17:45PM -0400, Bishal Thapa wrote:
Dear list,
I have a question. I just want to make sure I am not hallucinating infront
of my comp here. I run this script as follows:
1. ./usrp_rx_cfile.py -f 2.4G -d 128 foo.dat @ the receiver
= I get, the bitrate set to 500k
It
On Mon, Sep 14, 2009 at 11:02:36AM -0700, E. Ornelas wrote:
Hello.
I'm trying to use the SPI interface of a BasicRX.
I made a small test program.
It basically keeps on writing.
There are a few things I need to know:
1 - is this the right way to use the SPI?
Pretty close. See below.
2
On Mon, Sep 14, 2009 at 11:03:22AM -0700, Harvind Samra wrote:
We've seen it on a couple of Dell laptops, as well as the Atom boards we
used at Burning Man. I'll get the EHCI controller information ASAP.
We are using an inband-signaling RBF, inband_1rxhb_1tx.rbf. Could that
be the source
On Mon, Sep 14, 2009 at 11:13:01AM -0700, Yuan Wang wrote:
Hi all,
I can't find the definition of class gr_sincosf() used in
gr_frequency_modulator_fc.cc in doxygen C++ API online.
i.e. gr_sincosf (d_phase, oq, oi)
Can anyone tell me how to find that?
It's worth learning basic *nix
On Mon, Sep 14, 2009 at 02:35:10PM -0700, tom_unaff wrote:
Eric, I am also able to run this 2 lines of code.. but problem occures when
this object is created in one of the benchmark examples (tx or rx).
Those benchmarks also create usrp objects.
The error I get when second time such object
On Fri, Sep 11, 2009 at 02:14:16AM -0700, tom_unaff wrote:
Hello,
I don't understand one think.. Class usrp_sink_c inherit from usrp_base a
public method read_aux_adc(int,int).
[code]
int usrp_base::read_aux_adc (int which_dboard, int which_adc)
{
return d_usrp_basic-read_aux_adc
--- Harvind
On Mon, 2009-08-10 at 11:04 -0700, Eric Blossom wrote:
On Mon, Aug 10, 2009 at 10:48:57AM -0700, Harvind Samra wrote:
We've occasionally encountered cases, while running OpenBTS, where the
USRP code hang up and starts spitting out the following message
repeatedly:
short
On Mon, Sep 14, 2009 at 04:10:38AM +0530, srudeep reddy wrote:
Hi,my name is srudeep patil,iam doing my masters in EE(wireless
communication) at san jose state university.Iam doing a project this
semester on Software Defined Radio.So this community will be a lot of
helpful to me.
Welcome!
On Sat, Sep 12, 2009 at 07:14:14PM -0700, maher manai wrote:
i have installed this version
http://gnuradio.org/svn/gnuradio/trunk gnuradio_r7596
to run bbn80211b code but when i run bbn_80211b.test.py code
it appears this
[r...@m examples]# ./bbn_80211b_test.py
Traceback (most recent call
On Mon, Sep 07, 2009 at 09:35:41AM +0200, Faschingbauer, Alexander wrote:
Hello,
i want to connect a RF power amplifier (PA) to the USRP / LFTX board.
It is recommended to control the PA with an external signal to switch it from
standby mode into transmit mode.
The amplifier has an input
On Thu, Sep 10, 2009 at 12:13:21PM +0200, Dimitris Symeonidis wrote:
I have noticed that you can't add a message queue to a GRC flowgraph. Why is
that? Is the reason technical, or that no one bothered to write the .xml
file?
And is the message queue going to be deprecated in gnuradio 3.3?
On Wed, Sep 09, 2009 at 10:30:16PM -0700, DDKK wrote:
I am wondering if this is some kind of pythonpath setup error that I'm
making.
I get the same error if I just import the gr definition from gnuradio in the
python interpreter. It gives me the same error message the first time,
On Thu, Sep 10, 2009 at 07:26:56PM -0700, adib_sairi wrote:
besides my last two post (which unfortunately i still don't have any answer)
, i have another question.. any help will be very appreciated.
if we transmit using benchmark_tx.py, we can change the amplitude of the
transmission by
On Wed, Sep 09, 2009 at 02:51:56AM -0700, Milo Wong wrote:
Hi all,
I was thinking about the ways of scaling the modulated complex(with
imag. part equals to 0) symbol to the range +/- 32767 which is accepted
by USRP. My idea is to find the output range (Min, Max) and first scale
to
On Wed, Sep 09, 2009 at 12:35:21PM -0500, prou...@illinois.edu wrote:
Thanks for your patience with me. Setting it to 2.41GHz worked.
Glad to hear that it worked!
Eric
___
Discuss-gnuradio mailing list
Discuss-gnuradio@gnu.org
On Wed, Sep 09, 2009 at 08:10:03PM -0700, harshal jadhav wrote:
Dear Eric,
I am searching for a code that allows both the antennas of USRP transmit
simultaneously.
I want to use both the daughter boards of a USRP board as transmitter.
Regards,
Harshal
Please have a look at
On Sat, Sep 05, 2009 at 07:10:29PM +1000, Geoff wrote:
On Fri, 4 Sep 2009 06:47:58 am Eric Blossom wrote:
snipped
This is interesting news. Hopefully it means that I will be able to get
Gnuradio running on one of my hppa boxen :-). I recently acquired a well
spec'd rp5470 that'd
On Mon, Sep 07, 2009 at 06:53:46AM +0200, Vincenzo Pellegrini wrote:
Hi everybody,
Just a very quick question: I'm developing a simple interface to usrp2
directly using libusrp2.
I'm calling the set _center_freq method and I'm having the same frequency
offset problems (dxc not set) that you
On Mon, Sep 07, 2009 at 07:42:46AM -0400, Alex young wrote:
Hi,
I hope someome can help me understand what I am doing wrong. I am
attempting to install release 3.2 and have run into errors. I am running
Ubuntu 8.04 on x86. The version of gnuradio is revision 11635.
Is this 3.2.2 or
On Mon, Sep 07, 2009 at 03:39:33PM -0500, prou...@illinois.edu wrote:
Hello,
I am new to the GNU Radio. I have been following the steps outlined in
http://gnuradio.org/trac/wiki/UbuntuInstall, and I am at the point where I am
testing.
The command:
ls -lR /dev/bus/usb | grep usrp
shows
On Wed, Sep 09, 2009 at 06:36:33AM +1000, Geoff wrote:
On Wed, 9 Sep 2009 03:03:27 am Eric Blossom wrote:
snipped
Eric
Hi Eric et al,
Gnu Radio 3.2.2 configures OK but falls over part way through make as
per the quote below. I can't write software but I can break stuff
On Tue, Sep 08, 2009 at 08:16:07AM +1000, Steve Glass wrote:
Hi,
I've got my custom block producing mono audio at 8KS/s which I am sending to
an audio_sink(8000, plughw:0,0) and have some questions.
First question: what is the range of values that each output sample can
assume before
On Fri, Sep 04, 2009 at 08:12:55AM +0100, Jörg Lotze wrote:
What's the status of the VRT work? Any rough ideas when it is going to
be usable? Saw that some work in progress VRT code has been merged into
the trunk recently.
Jorg
I'm working on it over the next two weeks. On the host and
On Tue, Sep 01, 2009 at 03:58:32PM -0700, Eric Blossom wrote:
On Tue, Sep 01, 2009 at 06:23:24PM -0400, Tom Rondeau wrote:
I have an application where I have to start and stop the USRP2
multiple times at various points, but I've been having trouble getting
it to work. I traced it down
On Fri, Sep 04, 2009 at 08:20:19AM -0700, Johnathan Corgan wrote:
On Fri, Sep 4, 2009 at 04:14, Eric Blossome...@comsec.com wrote:
Please pull from http://gnuradio.org/git/eb.git u2-hang
This has been merged into the master branch.
Thanks!
Eric
On Fri, Sep 04, 2009 at 05:01:59PM -0400, Bruce McGuffin wrote:
Matt Ettus wrote:
Bruce McGuffin wrote:
Hi
When I specify a particular receiver decimation rate
for the USRP2, the task of decimating is presumably
split up between the CIC and two half-band filters.
My question is how is
On Thu, Sep 03, 2009 at 04:49:17PM +0100, Jorg Lotze wrote:
Hi,
has anyone successfully used the USRP2 with a PowerPC Linux? I am
planning to use it on an embedded system with a PowerPC Debian Linux.
Jorg
The current code won't work on big endian machines, and it also does
unaligned loads
On Fri, Sep 04, 2009 at 06:34:49AM +1000, Geoff wrote:
On Fri, 4 Sep 2009 03:20:47 am Eric Blossom wrote:
On Thu, Sep 03, 2009 at 04:49:17PM +0100, Jorg Lotze wrote:
Hi,
has anyone successfully used the USRP2 with a PowerPC Linux? I am
planning to use it on an embedded system
On Tue, Sep 01, 2009 at 02:42:07PM -0700, udadidd wrote:
I wanted to view the access code, data in gr_correlate_access_code and
gr_framer_sink_1 programs. I found the VERBOSE in both programs. I set this
to 1. But i do not see any data. What is the purpose of this VERBOSE in that
case? Is it
On Tue, Sep 01, 2009 at 06:23:24PM -0400, Tom Rondeau wrote:
I have an application where I have to start and stop the USRP2
multiple times at various points, but I've been having trouble getting
it to work. I traced it down to see that when the stop control message
is sent, the host never
On Tue, Sep 01, 2009 at 03:51:41PM -0700, Milo Wong wrote:
Hi All,
I was writing a new block and the make process of source files(.cc .h .i,
etc) was successful. However, when I make check to test the block, there's
an error message Segmentation fault coming out. I searched the previous
On Wed, Sep 02, 2009 at 09:14:52AM +0800, fangming he wrote:
Hi, all
I set the frequency of USRP to be 910MHz, but I noticed that
the central frequency of the signal is 914MHz. Why there is 4Mhz frequency
offset.
I also found that there is also a signal comeing up in 896Mhz. The
On Tue, Sep 01, 2009 at 07:18:02PM -0700, Josh Blum wrote:
Eric Blossom wrote:
On Wed, Sep 02, 2009 at 09:14:52AM +0800, fangming he wrote:
Hi, all
I set the frequency of USRP to be 910MHz, but I noticed that
the central frequency of the signal is 914MHz. Why there is 4Mhz frequency
On Tue, Sep 01, 2009 at 09:12:01PM -0700, udadidd wrote:
Oh I am actually expecting it to show data when i run the benchmark_rx.py
Can you please let me know which code are you referring to?
gnuradio-core
Eric Blossom wrote:
On Tue, Sep 01, 2009 at 02:42:07PM -0700, udadidd wrote
On Fri, Aug 28, 2009 at 02:05:02PM -0300, Igor Almeida wrote:
On Fri, Aug 28, 2009 at 12:56 PM, Douglas
Geigerdoug.gei...@bioradiation.net wrote:
That sounds like it could be a frequency offset between TX and RX. You
say you aren't synchronized (which I interpret to mean you don't lock
the
On Thu, Aug 27, 2009 at 12:46:13PM +0200, Mattias Kjellsson wrote:
adib_sairi wrote:
Dear All,
As i being experimenting with USRP and GNU Radio, i notice that some of the
last packet of my data that i receive is keep inside the USB buffer. this
data will be flush out to my PC only if i
On Wed, Aug 26, 2009 at 01:38:10PM +0200, perz wrote:
Dear All,
I can sample four antennas with a single USRP1 using std_4rx_0tx.rbf and
four custom radio receivers connected to basic daugherboars (I tried
this a long time ago). Is there a way of transmitting on four antennas
with a
On Mon, Aug 24, 2009 at 11:29:10AM -0700, udadidd wrote:
Hi
I wanted to do the benchmark tx and rx with Audio instead of the USRP.
I made all the changes to the transmitter and the receiver. The transmitter
works fine but the receiver hangs!!
I do the upconversion on transmitter after
On Fri, Aug 21, 2009 at 11:59:41PM -0700, shesh wrote:
hi,
i am working on a spectrum sense code. in the following statement
self.msgq = gr.msg_queue(16)
is there any significance for the number 16?does changing this number
affect the performance of the
On Sat, Aug 22, 2009 at 06:54:27PM +0530, praphul chandra wrote:
I am new to GNU Radio. Tried installing from source as per installation
guide but getting following message at the end of ./bootstrap execution:
*checking for FFTW3F... configure: error: Package requirements (fftw3f =
3.0) were
On Fri, Aug 21, 2009 at 06:47:12AM -0700, anma wrote:
hi,
i am working on a project in which 2 connect statements are defined in
the same top_block. both connections begin with usrp source. i would like to
know what exactly is the sequence of execution of the flowgraph when
tb.start is
On Fri, Aug 21, 2009 at 01:53:25PM -0400, Michael Leferman wrote:
I'm not familiar with the serial console at all, so no, one is not
connected. Can you point me to some documentation on it?
Open the USRP2 up and look at the back edge of the board. There is a
4-pin connector in the back
On Fri, Aug 21, 2009 at 12:03:51AM +, Yan Wang wrote:
Hello,
I am trying to change some options dynamically. Right now I am trying this
with benchmark_ofdm_rx.py, I add one new class for dynamically enter the new
option value and change it in the program. However I found those options,
On Thu, Aug 20, 2009 at 10:02:35PM -0400, Yan Wang wrote:
Hi Eric,
Thanks for you quick answer.
I think I've tried lock and unlock, they are also not working.
Have you looked at the examples that use lock and unlock?
Am I doing this in the right way? Right now I've tried all these in a
On Tue, Aug 18, 2009 at 04:52:13PM +0200, Dimitris Symeonidis wrote:
Hi list,
I've come across a strange bug: while the usrp correctly returns
dbid() == -1 when no dboard is connected to the side you chose, the
usrp2 returns dbid() == 1 (which is the id of BasicRX) when no dboard
is
On Tue, Aug 18, 2009 at 01:30:18AM -0700, adib_sairi wrote:
Matt Ettus wrote:
The Flex2400 board, which was released this week covers 2300-2700 MHz.
There is a filter on board which covers the ISM band (2400-2483 MHz),
but it can be bypassed easily, giving coverage to the full
On Tue, Aug 18, 2009 at 02:37:03AM -0700, anma wrote:
hi
i am working on a project related to gnu radio.i would like to increase the
real time capabilities of the program using real time application
interface(rtai).could anyone suggest a solution?
A solution to what?
What is the
On Tue, Aug 18, 2009 at 05:55:22PM +0530, Sheshanandan KN wrote:
hello all,
I am performing an experiment wherein I am combining OFDM receive code
and spectrum sense code as hier_blocks. I am stuck while defining the
usrp_source here. As you all know, the OFDM receive code uses
usrp_source().
On Tue, Aug 18, 2009 at 10:55:54AM -0700, harshal jadhav wrote:
Hi,
I had an import error *' cannot import eng_option'* while running the code
for dialtone.
This happened after i ran the code successfully couple of times. I switched
on and off the laptop a couple of times.
Couldnt
On Mon, Aug 17, 2009 at 02:39:23PM -0400, Philip Balister wrote:
In http://gnuradio.org/trac/changeset/11583 there are some files that
use printf. With gcc-4.4 (on Fedora 11) these fail to compile unless you
add #include cstdio.
Thanks.
Before I look at fixing this by adding the include,
On Mon, Aug 17, 2009 at 11:23:42AM -0400, Bruce McGuffin wrote:
Eric Blossom wrote:
On Fri, Aug 14, 2009 at 04:55:56PM -0400, Bruce McGuffin wrote:
A while ago (Nov. 14, 2008) Matt talked about using a USRP2 with
two antennas and two external radio receivers driving the basicRx.
My
On Thu, Aug 13, 2009 at 01:52:12PM -0400, bin zan wrote:
Hello,
I was trying to use gdb with ofdm example. I called gri_debugger_hook
in gr_ofdm_frame_sin.cc :work. However, it gives following output which is
not what I expected. Can any one give me a help or explanation?
Thanks,
On Thu, Aug 13, 2009 at 01:24:04PM -0700, Milo Wong wrote:
Hi,
I have read Eric's howto-write-a-signal-processing-block, but I still got
a question. Is there anyway I could find the python description of gr.*
modules(or functions). I browsed both gnuradio-core/src/python/gnuradio/gr
and
On Thu, Aug 13, 2009 at 04:32:37PM -0400, Alex young wrote:
Background info:
GNU Radio trunk, revision 11163
Ubuntu 8.04, 32bit
make version 3.81
autoconf version 2.61
gcc version 4.2.4
The problem I am having:
I downloaded gr-howto-write-a-block-3.2.tar.gz from
On Fri, Aug 14, 2009 at 04:10:11PM -0400, Jonathan Coveney wrote:
I'm modifying fm_tx4 so that I can use wav files instead of dat files as a
source, and output a file instead of sound.
I'm having issues with sample rate. I've attached the code, but here is the
modified pipeline code, which
-write-a-block.html is
significantly different than the structure of gr-how-to-write-a-block
included with the current release of gnuradio. Insofar as I can tell, the
tutorial written by Eric Blossom only explains how to run a QA test on the
block, not how to compile or install it. As a person
On Fri, Aug 14, 2009 at 04:55:56PM -0400, Bruce McGuffin wrote:
A while ago (Nov. 14, 2008) Matt talked about using a USRP2 with
two antennas and two external radio receivers driving the basicRx.
My question is, is it possible to do that if the external radio IF and
bandwidth are too high to
On Thu, Aug 13, 2009 at 04:32:11PM +0200, Mattias Kjellsson wrote:
Johnathan Corgan wrote:
displaying output at the rx- side, but that
shouldn't be a problem, as long as the switch to boost- threads hasn't
been done?
The only functionality outside of gr I have used is a pthread
On Wed, Aug 12, 2009 at 03:41:19PM +0200, Mattias Kjellsson wrote:
Hi list,
Is there an interest in having more c++ examples included in gnuradio?
Although the dial- tone example is very illustrative, it might be handy
to have at least a few more?
Best regards
//Mattias
Yes.
The
On Wed, Aug 12, 2009 at 10:00:20AM -0700, Milo Wong wrote:
Hi all,
I was wondering if there is anyway to obtain the binary output from audio
source in GRC. I need this bits information as modulating signal for ASK.
Since sound card digitized our analog voice signal to binary information in
On Wed, Aug 12, 2009 at 11:05:19AM -0700, Jane Chen wrote:
Hi all,
I ran the tunnel.py, which is one of the gnuradio-examples, on two
PCs (fedora 9 (kernel: 2.6.27), GNU Radio 3.2 and Intel Pentium
D). The RTT is about 30ms. I read the paper Enabling MAC Protocol
Implementations on
On Wed, Aug 12, 2009 at 10:11:30PM +0200, Michael Sprauer wrote:
Am Sonntag, 9. August 2009 21:50:25 schrieb Eric Blossom:
On Sun, Aug 09, 2009 at 08:49:51PM +0200, Michael Sprauer wrote:
Am Donnerstag, 6. August 2009 02:08:46 schrieben Sie:
I had an issue with the gr-usrp2 python
On Mon, Aug 10, 2009 at 05:29:27PM -0400, Jonathan Coveney wrote:
Howdy,
I want to better understand certain blocks... such as what the parameters of
optfir.low_pass actually specify, how it's implemented, that sort of thing.
But the gnuradio filetree is next to impossible to traverse.
I
On Mon, Aug 10, 2009 at 08:02:45PM -0700, Firas A. wrote:
Hi,
From about three days, gnuradio.org seems to stop sending the commit files.
For me, the last revision received was 11546.
BR
Firas
It's fixed now.
Eric
___
Discuss-gnuradio
On Tue, Aug 11, 2009 at 08:59:23AM -0700, udadidd wrote:
hi
i want to see the signals on the scope before and after modulation. but the
transmit_path.py use hier_block2 and benchmark_tx use top_block. can any one
kindly help on where should i go ahead and make changes?
May I suggest
at these points?
Eric Blossom wrote:
On Tue, Aug 11, 2009 at 08:59:23AM -0700, udadidd wrote:
hi
i want to see the signals on the scope before and after modulation. but
the
transmit_path.py use hier_block2 and benchmark_tx use top_block. can any
one
kindly help on where
On Tue, Aug 11, 2009 at 02:18:15PM -0700, udadidd wrote:
sure i can do that.
But my connections are like this.
self.connect(module A, module B)
self.conenct(module B, module C)
self.connect(module B, file_sink.1)
self.connect(module C, module D)
self.connect(module C,
On Tue, Aug 11, 2009 at 04:58:36PM -0500, Himanshu Thapar wrote:
Hello Everyone,
I am new to GNU Radio and was wondering if anyone can guide me to the only
C++ modules of GNU Radio. I am actually trying to port these modules in
Windows in a commercial compiler and seeing what errors I run
On Mon, Aug 10, 2009 at 10:48:57AM -0700, Harvind Samra wrote:
We've occasionally encountered cases, while running OpenBTS, where the
USRP code hang up and starts spitting out the following message
repeatedly:
short write xfer: 0 != 3584
In looking at fusb_linux.cc, it looks like USB
On Sun, Aug 09, 2009 at 08:49:51PM +0200, Michael Sprauer wrote:
Am Donnerstag, 6. August 2009 02:08:46 schrieben Sie:
I'm fighting in this area right now. Are there some things to know?
What does the core-devs think? Is it possible?
I can barely spell windows, but if you know how
On Sun, Aug 09, 2009 at 01:22:03PM +0200, Moritz Fischer wrote:
On Fri, 2009-08-07 at 12:59 -0700, Eric Blossom wrote:
It would be great to have it running. Please fix it and send a patch.
I'll do that, after trying for a whole day, I finally sent the message
to the list, and about 20mins
On Sat, Aug 08, 2009 at 05:02:55PM -0400, Jonathan Coveney wrote:
My goal is to be able to read a frequency other than the frequency that was
tuned to draw samples using usrp_rcv_cfile (ie I used 93.3M, and want to be
able to demodulate 92.5M...I'd try to use lessons learned from wfm_rcv2 but
On Fri, Aug 07, 2009 at 05:22:16PM +0200, hanwen wrote:
Hi *,
In usrp_wfm_rcv.py there are two status bar at the bottom of the window, the
left one showing the result of tune frequency while the other shows the gain
and volume.
But in my program I always cannot get two status bar but there
On Fri, Aug 07, 2009 at 09:13:52AM +0200, Moritz Fischer wrote:
Hi all,
after some time searching through the list archives I was not able to
find out what happened to the multi_usrp.py file which is needed to run
the the multi_usrp/multi_usrp_rx_cfile.py and
On Fri, Aug 07, 2009 at 06:52:41PM -0400, Jonathan Coveney wrote:
It looks like I needed to change the decimation rate. Since cfile uses 16, I
tried 16 on the side of the demodulator (instead of 200, which is the
default), and it worked. Is this how it should be? One thing that does
happen is
On Thu, Aug 06, 2009 at 12:39:15PM -0700, Milo Wong wrote:
Hi,
I was browsing the GNU radio C++ API. Here I have a couple of questions
about the class reference of gr_sig_source_f. (Signal generator)
1) For the type of public member function waveform(), i.e. gr_waveform_t
waveform ()
On Thu, Aug 06, 2009 at 04:45:32PM -0400, Jonathan Coveney wrote:
I'm creating a new fm demodulator based on usrp_rx_nogui, and in the
interest of modularity I'd like to grab the width of frequency being
captured off the daughterboard (in my case the TVRX, which I think is about
6MHz?)
in
On Thu, Aug 06, 2009 at 05:47:22PM -0400, Jonathan Coveney wrote:
http://www.linuxjournal.com/article/7505
This article is a useful one I've studied to understand FM demodulation
In the block of code that implements (albeit I haven't tried to run it
because it's not made to run with a USRP,
On Wed, Aug 05, 2009 at 04:03:28PM -0400, Jonathan Coveney wrote:
I'm using the TVRX, and my goal is to be able to take enough samples to
listen to two arbitrary frequencies (more than 6MHz apart). Given that the
bandwidth of the TVRX is 6MHz, I think that means I need 12Msamples/second
(I can
On Wed, Aug 05, 2009 at 04:40:41PM -0400, Andrew Lutomirski wrote:
If, however, you want to retune without stopping and restarting
sampling or having underruns, I know how to do it and can explain /
send patches (for C++ -- I never bothered implementing the Python
part).
In my experience,
On Wed, Aug 05, 2009 at 11:48:03PM +0200, Michael Sprauer wrote:
Hello list,
is someone working on a port of the usrp2 stuff to pcap lib so it can run on
windows as well as on linux?
Not that I know of. As you've probably noticed, the current
implementation uses linux-specific code to map
On Tue, Aug 04, 2009 at 04:38:56PM -0400, Andrew Lutomirski wrote:
Hi all-
Occasionally, while transmitting, my USRP2 will die -- that is, it
stops reliably transmitting and then it drops off the network and
doesn't come back until restarted. Any ideas? I'm running some
vaguely recent
On Tue, Aug 04, 2009 at 05:55:27PM -0400, Andrew Lutomirski wrote:
On Tue, Aug 4, 2009 at 5:52 PM, Eric Blossome...@comsec.com wrote:
On Tue, Aug 04, 2009 at 04:38:56PM -0400, Andrew Lutomirski wrote:
Hi all-
First off, I highly suggest that you add yourself to group usrp if
you're not
On Tue, Aug 04, 2009 at 07:44:21PM -0400, Andrew Lutomirski wrote:
On Tue, Aug 4, 2009 at 6:05 PM, Eric Blossome...@comsec.com wrote:
You're running it through a switch. We tell you not to do that.
Your switch is probably declining to be flow controlled by the USRP2,
hence there's no
On Tue, Aug 04, 2009 at 08:02:30PM -0700, Harvind Samra wrote:
The injunction against OpenBTS was formally lifted today. More
information is available at:
http://openbts.blogspot.com
http://openbts.sourceforge.net
As a result, we've made our private discussion group
On Sun, Aug 02, 2009 at 07:35:19PM -0500, L. Van Warren wrote:
We have a chance to make history, with an array of GPS disciplined SDR's -
GPSDR's for short
This is the ham radio equivalent of HTML - a lingua franca for RF data
exchange.
Enabling radio amateurs to share signals + timing
On Fri, Jul 31, 2009 at 12:52:44AM +, maher manai wrote:
i'm working on wlan system wich is 802.11a/g it use OFDM mod . in
GRC i found a ofdm mod block wich contains mod type ,ifft , cyclic
prefix but i think it doesn't support the number of subcarrier
pilots and there position wich are 4
On Thu, Jul 30, 2009 at 12:13:51PM +0530, Narayanan, Sivaramasubramanian (RT)
wrote:
Thanks Eric,
I actually need to vary only the phase of the signal, the frequency of
the signal and reference remaining constant. Also I need to be able to
vary the phase continuously in the run time.
On Thu, Jul 30, 2009 at 06:40:00PM +0200, Jakob Meineke wrote:
Hi all,
I have encountered a memory leak that seems to be related to the creation of
a usrp2_sink object. An admittedly stupid test case that shows the same
symptoms as my actual program is given below:
Jakob,
Thanks for the
On Thu, Jul 30, 2009 at 01:20:25PM -0700, udadidd wrote:
Thanks a ton. That helped a lot!
1) The same program now i use it with delete_head_nowait() which returns 0
when there's nothing in the queue instead of blocking.
2) I also wanted to see if the queue is empty and used : empty_p()
On Thu, Jul 30, 2009 at 03:51:52PM -0400, Jonathan Coveney wrote:
Ah, and I forgot to mention one more thing. The errors that I get when
running usrp_fft.py are methodical, with one every second or so, which seems
odd. if I wasn't getting anything I'd imagine it to flood the screen (which
is
On Wed, Jul 29, 2009 at 09:50:32AM +0530, Narayanan, Sivaramasubramanian (RT)
wrote:
Hi,
How do I generate variable phase signals using GNU radio blocks? For
example, I generate a reference Sine wave. I need another sine wave
whose phase can be varied with respect to the reference sine
On Wed, Jul 29, 2009 at 11:46:12AM -0400, Sriram Krishnan wrote:
Hello,
I am working on a small application which is supposed to receive/send
data packets(i have two usrp nodes) and sense spectrum for any energy
that may be present.
I am using benchmark_rx/tx.py for the same. I have
On Wed, Jul 29, 2009 at 04:29:35AM -0700, Shabbir Ahmed wrote:
Dear All:
I need to calibrate my USRP with Flex900 daughter boards to take real world
measurements in dBm. But I am confused with the gain parameter that is used
in usrp_fft.py.
1. Not sure whether the RFX900 board has a PGA
On Wed, Jul 29, 2009 at 02:31:12PM -0700, Luca Pascale wrote:
Hi all,
I am trying to use USRP1 with an external Tuner using the C++ USRP interface
example founded on the wiki.
The Tuner have a 16 MHz BW centered at 21.4MHz IF.
I have connected it (passing through a passband filter
On Tue, Jul 28, 2009 at 10:25:40AM -0700, George Nychis wrote:
On Mon, Jul 27, 2009 at 7:06 AM, Johnathan Corgan
jcor...@corganenterprises.com wrote:
On Mon, Jul 27, 2009 at 06:28, Dimitris Symeonidisazim...@gmail.com
wrote:
Do we even need timestamps, or are the samples aligned
On Tue, Jul 28, 2009 at 03:37:02PM -0400, Jonathan Coveney wrote:
Well, maybe that's the wrong way to phrase it. I need to make or buy an FM
antenna (I realized I accidentally grabbed the VERT900 from my lab, and they
don't have an FM antenna).
Some sites seem to imply that coax is usually
On Tue, Jul 28, 2009 at 03:55:26PM -0400, Jonathan Coveney wrote:
And I am using the Basic RX, if that makes a difference.
It will work more-or-less, but it's not really the daughterboard to
use to receive broadcast FM. The TVRX is a much better choice.
The USRP1 samples at 64MHz, which means
and tape it to the wall.
Is this because the BasicRX doesn't have a filter and
whatnot in it to specifically target the radio frequencies?
Yes. Read up on bandpass sampling for the details.
Eric
2009/7/28 Eric Blossom e...@comsec.com
On Tue, Jul 28, 2009 at 03:55:26PM -0400, Jonathan
On Mon, Jul 27, 2009 at 02:12:34PM +1000, Steve Glass wrote:
Hi,
I'm helping a mate get GNURadio 3.2 running on an Ubuntu machine. As a quick
sanity check I run dial_tone.py and to my surprise it generates a stream of
aU audio under-run warnings and clicking noises from the speaker. I've
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