Hi,
Are there any commands to free up the usb of the usrp from linux?
I'm working on receiving and transmitting signals between 2 usrps but i
realised that, once i start the receiver, even though i exited from the program
in the terminal and reopen the same file, i will get the error messag
Hi,
As per rev 10285, gr-howto compiles and works fine without any problem.
Best Regards,
Firas
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Hello,
I have been thinking about this. I have access to two TETRA terminals.
The down side is I am beginner in Gnu Radio and DSP in general.
Is the π/4 DQPSK modulation really supported by Gnu radio? Any examples
about this?
Grzegorz Suder wrote:
Hello,
I've looked through Wiki and discus
On Wed, Jan 21, 2009 at 09:41:38PM -0500, Michael Dickens wrote:
> +++
> Making all in gr-usrp
> Making all in src
> /opt/local/bin/swig -c++ -fvirtual -python -modern -keyword -w511 -
> DOMNITHREAD_POSIX=1
> [snip]
> -I/GNURadio/trunk/build/gnuradio-3.2svn/_build/usrp/host/lib/legacy
On Wed, Jan 21, 2009 at 09:50:41PM -0500, Paul Creekmore wrote:
> Eric Blossom wrote:
>> On Wed, Jan 21, 2009 at 05:47:19PM -0500, Paul Creekmore wrote:
>>
>>
>> Thanks for answering your own question :-)
>>
>> The USRP1 is little endian. My not-fully-considered thought is that it
>> ought to g
Eric Blossom wrote:
On Wed, Jan 21, 2009 at 05:47:19PM -0500, Paul Creekmore wrote:
Paul Creekmore wrote:
Context: I'm adding new quantization (sample width) options to the
USRP FPGA configuration. (Long time in coming; yes, I know.)
Question: I'm seeing that in 8-bit mode, the USRP
On Wed, 2009-01-21 at 21:41 -0500, Michael Dickens wrote:
> I'm happy to make these changes into a test branch to verify
> compatibility with older SWIG version(s) ... that is, if this is the
> correct way to go. Thoughts? Comments? Suggestions? - MLD
Thanks for the offer...go for it. Can
+++
Making all in gr-usrp
Making all in src
/opt/local/bin/swig -c++ -fvirtual -python -modern -keyword -w511 -
DOMNITHREAD_POSIX=1
[snip]
-I/GNURadio/trunk/build/gnuradio-3.2svn/_build/usrp/host/lib/legacy -
module usrp_swig -o usrp_swig.cc ../../../gr-usrp/src/usrp.i
Unable to
On Wed, Jan 21, 2009 at 05:47:19PM -0500, Paul Creekmore wrote:
> Paul Creekmore wrote:
>> Context: I'm adding new quantization (sample width) options to the
>> USRP FPGA configuration. (Long time in coming; yes, I know.)
>>
>> Question: I'm seeing that in 8-bit mode, the USRP outputs samples fr
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Mar
Paul Creekmore wrote:
Context: I'm adding new quantization (sample width) options to the
USRP FPGA configuration. (Long time in coming; yes, I know.)
Question: I'm seeing that in 8-bit mode, the USRP outputs samples from
its internal channels in the following sequence (an 8-bit, 8-channel
ex
Make sure you put an "M" after the frequency, otherwise it will assume
you want to tune to 100 Hz, which it can't do.
Matt
w w wrote:
So, the board is probally badcan you recommend a good example
script for testing purposes? I also need the the TVRX board to
Recieve bi-phase L encoded
On Wed, Jan 21, 2009 at 3:17 PM, Grzegorz Suder
wrote:
> Actualy what I am worrying about are discontinuous TDMA signals (for
> example: receiving specific time slot). I guess that capturing such TDMA
> signal (Tetra is just an example due to 4 time slots) where only one slot is
> transmitting may
Actualy what I am worrying about are discontinuous TDMA signals (for
example: receiving specific time slot). I guess that capturing such TDMA
signal (Tetra is just an example due to 4 time slots) where only one slot is
transmitting may require synchronization to external time source.
On Wed, Jan 2
So, the board is probally badcan you recommend a good example script for
testing purposes? I also need the the TVRX board to Recieve bi-phase L
encoded datais this possible?
Thanks
On Wed, Jan 21, 2009 at 2:53 PM, Eric Blossom wrote:
> On Wed, Jan 21, 2009 at 01:55:32PM -0500, w w
On Wed, Jan 21, 2009 at 01:55:32PM -0500, w w wrote:
> Greetings,
> I got the TVRX because I need a board to RX AM from 100 to 600 MHZ. I know
> it is for TV but I thought it could do AM as well. However I can't seem to
> set the intial freq for the board. Using the same python script I can s
I am a newbie to the radio. I am trying to find my way around and have
gone thru some of the examples.
I am trying to transmit (for right now) 2 tones from the BasicTx
daughterboard. My goal is to have a centerfreq of 150MHz. Basically I
have a test program that is modified from the
/usrp/host/a
On Mon, Jan 19, 2009 at 09:02:18AM -0200, Ronaldo Nunez wrote:
> Hello GnuRadio community,
>
> I made a transmission path diagram to try to understand how USRP works.
> I'm not sure if it's right, if somebody can correct it, it will be great! :D
>
> To debug the diagram I used these parameters, b
On Mon, Jan 19, 2009 at 10:56:13AM +0100, Grzegorz Suder wrote:
> Hello,
> I've looked through Wiki and discussion archives but I haven't found answer
> for my question. Is there any working code for Gnu Radio that is able to
> receive Tetra subscriber (not base station) signal and convert it into
Greetings,
I got the TVRX because I need a board to RX AM from 100 to 600 MHZ. I know
it is for TV but I thought it could do AM as well. However I can't seem to
set the intial freq for the board. Using the same python script I can set
the freq for a basic RX board. I don't seem to see any ot
On Fri, Jan 16, 2009 at 07:18:10PM -0600, Maduike, Dumezie wrote:
> Hello all,
> I was analyzing the dbpsk.py file and I was wondering if someone can
> explain the line:
> self.connect(self, self.pre_scaler, self.agc, self.rrc_filter,
> self.receiver, self.diffdec, self.slicer,
>
Context: I'm adding new quantization (sample width) options to the USRP
FPGA configuration. (Long time in coming; yes, I know.)
Question: I'm seeing that in 8-bit mode, the USRP outputs samples from
its internal channels in the following sequence (an 8-bit, 8-channel
example):
1, 0,
On Wed, Jan 21, 2009 at 05:10:07PM +0200, Pedro Sánchez Canal wrote:
>
> Hi, I'm trying to establish my first connection between two
> computers using two USRPs. As I have read, there are some example
> programs that allow you to do it in an easy way in order to
> understand the basics of gnuradi
Yong J. Chang wrote:
Thanks all!
As I know so far, RFX2400 doesn't have amplifier we can control. So
set_gain() doesn't affect any transmit power. Right?
Now I'm trying to control PGA gain on FPGA side, but I confused. AD9862 has
pga which can be controled in range [0 ~ -20dB].
self.u.set_pga
Thanks all!
As I know so far, RFX2400 doesn't have amplifier we can control. So
set_gain() doesn't affect any transmit power. Right?
Now I'm trying to control PGA gain on FPGA side, but I confused. AD9862 has
pga which can be controled in range [0 ~ -20dB].
self.u.set_pga(0,-20)
pga_gain = self
Hi, I'm trying to establish my first connection between two computers using two
USRPs. As I have read, there are some example programs that allow you to do it
in an easy way in order to understand the basics of gnuradio work. I have used
Benchmark_tx and Benchmark_rx but I haven't had any succe
Michael Dickens wrote:
> On Jan 19, 2009, at 5:46 AM, Bruhtesfa Ebrahim wrote:
>> Details:
>> - The sampling rate of the original recieved signal from USRP was
>> 64MHz/128=500KHz, so I used decimation factor of 500 in the xlating
>> filter such that the output baseband signal will have a sampl
Yep,
Brian's right. Doing what you propose would be equivalent to reducing
the DAC to ~7bit and thus reducing signal-to-quantisation-noise-ratio by
54dB (!). You don't want that.
Try subdev.set_gain(). You can see the available gain range with
subdev.gain_range() (subdev is the object to access t
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