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 wrote:
> davek wrote:
>>
>> I have a tower nearby broadcast c
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 so
davek wrote:
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?
Yes. ISM band filters are specifically designed to keep out strong
signals at 896 MHz.
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 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 gr_top
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 solu
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 RFI
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
2009/3/24 Paulo Benatto :
> 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
You probably
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 /usr/local/lib/
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
a
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.
LNA
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 item
Hi,
> On Tue, 3/24/09, Dimitris Symeonidis 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 looked at the
>
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
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
Quoting "Johnathan Corgan" :
>> $ 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 500kb/s at both,
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
For gr blocks, doxygen is the place to look. For wxgui graphical sinks,
take a look at the python code:
http://gnuradio.org/trac/browser/gnuradio/trunk/gr-wxgui/src/python
feldmaus wrote:
Hi All,
can somebody of the developers give me a hint,
where the fftsink2 is documented in the doxygen AP
2009/3/23 Ahmed Majeed Khan :
> $ 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. Try
changin
Forgot to copy the list.
-- Forwarded message --
From: Johnathan Corgan
Date: Tue, Mar 24, 2009 at 9:13 AM
Subject: Re: [Discuss-gnuradio] Compiling GNURadio Under Debian (Lenny)
To: wallen
On Tue, Mar 24, 2009 at 9:07 AM, wallen wrote:
>> Can you send me the config.log file
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 end
On Tue, Mar 24, 2009 at 8:46 AM, wallen 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 the USRP package is
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 to
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
> 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) f
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 minicircu
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 t
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 s
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
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 "SEA
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] ===
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, siz
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,
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 transm
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