Jin Zhang wrote:
Hi,
I'm a new comer to usrp2. If we want to use a reference 10MHz clock
instead of 100MHz, is there any hardware modification needed?
Now I only change the fpga_master_clock_freq in usrp2_impl.cc from *freq
= 1L to *freq = 1000L. I tried to send digital signal
Hi,
I was wondering how I can transmit synchronously on two antenna using
two RFX2400 on the same USRP1 motherboard.
It should be possible as the daugtherboards are MIMO capable but does
anyone have some c++ working piece of code ?
My goal is to implement an Alamouti scheme diversity
Hi All,
can somebody of the developers give me a hint,
where the fftsink2 is documented in the doxygen API ?
Regards Markus
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Hi Somya - This bug has been fixed in the trunk in r10624 and 3.2
trunk release, but is not part of the 3.2rc1 tarball. The fix is to
add the line
d_vlen (vlen)
to the file
gnuradio-core/src/lib/gengen/gr_sub_XX.cc.t
right after the line
gr_make_io_signature (1, 1,
Hi list,
I'm trying to build wxPython (2.8.9.2) from source.
I read two manuals to install wxpython:
- http://www.wxpython.org/BUILD.html
- http://www.wxpython.org/INSTALL.html
I have configured PYTHONPATH.
Python version 2.5.4
Is there problem with gnuradio + wxpython?
[ERROR]
I was toying around with gnuradio's doxygen documentation, and have some
questions that hopefully someone on the list can answer:
1) Do we need both the html and xml documentation, or just html?
2) Search functionality would be useful. I looked at the doxygen
documentation and discovered the
On Tue, Mar 24, 2009 at 08:45:19AM -0300, Paulo Benatto wrote:
Hi list,
I'm trying to build wxPython (2.8.9.2) from source.
I read two manuals to install wxpython:
- http://www.wxpython.org/BUILD.html
- http://www.wxpython.org/INSTALL.html
I have configured PYTHONPATH.
Python version
OK, I rebuilt Angstrom with libusb-0.12 ans tested on my Gumstix Overo.
The Overo has a working EHCI host port. (Well after I removed a speck
from the back of the board called R26) Enough about my problems and
eyesight.
Running :
# ./test_usrp_standard_rx -D 10
xfered 1.34e+08 bytes in 5.27
Here is my staff,
I'm using two USRPs both with two daughterboards rfx400 and rfx2400. One
USRP only transmit and the other USRP only receive at a time. The two
daughterboads on one USRP receive or transmit at the same time.I modified
the codes of gnuradio-examples/digital to do the work.
The
hi all,
I have usrp and tvrx daughterboard,but tvrx sensitivity
is very bad, minimum input signal level is 40 dBuV(equal to-68dBm).
and noise figure is 8-10 dB. even if you have hi gain antenna, weak
signals die in TVRX. then I decided to purchase LNA next to antenna.
LNA that I chose is
i need to install from source, because i don't have permission apt. I think
that my installation of wxpython it's right! I will try again, thanks!
2009/3/24 Eric Blossom e...@comsec.com
On Tue, Mar 24, 2009 at 08:45:19AM -0300, Paulo Benatto wrote:
Hi list,
I'm trying to build wxPython
I've been trying to compile the source code under Debian (Lenny), and am
having some issues with SDCC dependencies. According to the Synaptic
package manager I have SDCC 2.8.0.dfsg-1 installed, but when I
run ./configure the USRP package is marked as failing the dependency
test for SDCC. Looks
On Tue, Mar 24, 2009 at 8:46 AM, wallen wal...@its.bldrdoc.gov wrote:
I've been trying to compile the source code under Debian (Lenny), and am
having some issues with SDCC dependencies. According to the Synaptic
package manager I have SDCC 2.8.0.dfsg-1 installed, but when I
run ./configure
Hi Everyone,
I apologize ahead of time if this question seems stupid or if the answer
already exists somewhere and I haven't been able to find it. I am working
with a group that is attempting to recreate a 56kb/sec RF Modem nominally
operating at 29MHz using Minimum Frequency Shift Keying. The
2009/3/23 Ahmed Majeed Khan khana...@msu.edu:
$ python ./benchmark_rx.py -f 10M -R A --rx-gain=70 -v -r 500K
bitrate: 250kb/s
$ python ./benchmark_tx.py -TA -f 10M -r 500k -v --tx-amplitude=2
bitrate: 500kb/s
The transmitter and receiver are operating at different rates.
As in the example, a common practice is to signal process like this:
USRP tuning w/ hardware decimation -- freq translating channel filter --
demodulator -- additional filtering
AFAIK, you haven't told us what sort of signal you're trying to receive, so
it's not possible to recommend specific
Quoting Johnathan Corgan jcor...@corganenterprises.com:
$ python ./benchmark_rx.py -f 10M -R A --rx-gain=70 -v -r 500K
bitrate: 250kb/s
$ python ./benchmark_tx.py -TA -f 10M -r 500k -v --tx-amplitude=2
bitrate: 500kb/s
Bitrate while using above command line arguments is
On Tue, 2009-03-24 at 11:59 -0400, Dan Tarr wrote:
Thanks again for any help on this, I'm basically hitting my head against a
brick wall.
What is happening is that the data coming out of the demodulator no
longer has the same byte boundaries as the data going into the
modulator. Your output
On Tue, 2009-03-24 at 13:34 -0400, Ahmed Majeed Khan wrote:
$ python ./benchmark_rx.py -f 10M -R A --rx-gain=70 -v -r 500K
bitrate: 250kb/s
$ python ./benchmark_tx.py -TA -f 10M -r 500k -v
--tx-amplitude=2
bitrate: 500kb/s
Bitrate while using above command line
Hi,
On Tue, 3/24/09, Dimitris Symeonidis azim...@gmail.com wrote:
have some questions that
hopefully someone on the list can answer:
1) Do we need both the html and xml documentation, or just
html?
XML documentation is needed for GRC.
2) Search functionality would be useful. I
Hi folks,
I tried to TX a FM modulated signal using USRP2 BasicTX.
The signal was a 440 Hz sinusoid, and the carrier 1 MHz.
I used the signal generator and fm modulator blocks provided by GNURadio.
When I tx it the follow message appeared on the screen:
USRP2::Tx_RAW: FIXME: short packet: 1
Engin Karabulut wrote:
hi all,
I have usrp and tvrx daughterboard,but tvrx sensitivity
is very bad, minimum input signal level is 40 dBuV(equal to-68dBm).
and noise figure is 8-10 dB. even if you have hi gain antenna, weak
signals die in TVRX. then I decided to purchase LNA next to antenna.
Hi, I am doing my final year UG project of implementing a packet radio in
SDR. I want to use Garner's algo for symbol timing recovery but i couldn't
find any block of it in gnuradio. Is there any such block? if not, then
what's the solution? cz I am not good at writing own signal processing block
Hi list,
i'm trying to build gnuradio, version 3.1.3, when i do make install i get
this error. I would like a litle help.
thanks!
[ERROR]===
libtool: install: error: cannot install `_audio_jack.la' to a directory not
ending in
2009/3/24 Paulo Benatto bena...@gmail.com:
i'm trying to build gnuradio, version 3.1.3, when i do make install i get
this error. I would like a litle help.
libtool: install: error: cannot install `_audio_jack.la' to a directory not
ending in /usr/local/lib/python2.5/site-packages/gnuradio
Hi,
I want to use one USRP to transmit and receive. I tried setting up two
flowgraphs (top_blocks), one that will be a receiver thread and
another a transmitter thread. However the program complains:
RuntimeError: gr_top_block_impl: multiple simultaneous gr_top_blocks not
allowed
Is there no
Hi,
I am a student of Master's program in electrical engineering (major :
telecommunications and dsp) .
As a master's final project i want to develop RFID reader/writer based on
GNU and compare the performance of RFID reader/writer which is not based on
GNU to that of one based on GNU.
Is such
On Tuesday 24 March 2009 20:58:39 Sajjad Sarwar wrote:
Hi, I am doing my final year UG project of implementing a packet radio in
SDR. I want to use Garner's algo for symbol timing recovery but i couldn't
find any block of it in gnuradio. Is there any such block? if not, then
what's the
Hi William,
William Sherman wrote:
I want to use one USRP to transmit and receive. I tried setting up two
flowgraphs (top_blocks), one that will be a receiver thread and
another a transmitter thread. However the program complains:
RuntimeError: gr_top_block_impl: multiple simultaneous
I have a tower nearby broadcast continuously at approx 869Mhz
My DBSRX sees it as a nice big spike on usrp_fft
My RFX900 however only sees noise...
Is this possible because of the ISM filter?
thanks
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Hi,
as the Matlab script created by Firas needs the Filter toolbox, I have created
an equivalent script for Octave.
Two differences:
It uses only 'freqz' for the computation of the transfer functions
For the baseband, also the images due to aliasing is plotted
I think, the second point gives
Matt thanks for the quick reply
i understand i have to cut the trace to FIL.1 and soldering a 100pF
capacitor in parallel
Any chance someone could upload a picture of the board post-mod ???
On Tue, Mar 24, 2009 at 8:34 PM, Matt Ettus m...@ettus.com wrote:
davek wrote:
I have a tower nearby
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