net)
> 3. Re: Parser error when building gnuradio under Cygwin (Don Ward)
> 4. usrp2(s) won't flash LEDs (Tom Gross)
> 5. USRP2 debugging procedure (Jeffrey Karrels)
>
>
> --
>
> Message: 1
&g
Hello All.
I finally had the opportunity to upgrade to the USRP2.0. I received it
in the mail yesterday, and I am playing around with it right now. I
hate to ask the noob question here, but for the life of me, I cannot
get it running.
Problem Description: When powering the USRP2.0 (with the SD ca
> >> New appication for USRP+GNU radio, free subway rides :)
> >>
> >> http://www-tech.mit.edu/V128/N30/subway/Defcon_Presentation.pdf
> >>
> >> Well, at least until people learn to deploy secure systems.
As a side note, there was also a Blackhat presentation in which
someone presented the basics
I was using FC7(32-bit) and GRC 0.69 for a little while. I too noticed
GRC closing completely, but I do not have enough details to back-up
your exact pattern. Come to think about it though, it happened more
often than not in graphs that had a lot of sinks in them...
I have not used GRC in some tim
Would someone mind capturing some HDTV samples for me so I can plug
them into atsc_rx? Or similarly, is there a repository anywhere with
some sample files? I don't happen to have the daughter board enabling
me to do it myself.
Thanks
Jeff
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spikes spurious showing up in my FFT that seem
to be appearing when I use a lower interpolation number.
Jeff
On 9/7/07, Jeffrey Karrels <[EMAIL PROTECTED]> wrote:
> Thanks Eric. So my math was right. Yesterday I seemed to be having
> issues because I was running out of memory. I since h
Ok. I am having a world of problems today, the main one being
determining if it is my issues causing the headache or the headache
causing the issues. ;)
I have a basic bandwidth limit that I am hitting and for some reason I
cannot do basic math today.
I am trying to see how many carriers I can tr
Hello everyone.
I am looking for some design suggestions for a multi-carrier
transmitter with one daughterboard. I took a look at the hardware and
software yesterday. From my understanding it looks like I would have
to write a DUC in the FPGA that would mix and combine my multiple
channels. I actu
> On 8/23/07, Jeffrey Karrels <[EMAIL PROTECTED]> wrote:
> > Hello all
> >
> > i am looking at gmsk again. i had two questions come up.
> >
> > 1) does clock recovery normally take place after fm demod?
>
> Sure.
Let me reword that, what is the benefit
Hello all
i am looking at gmsk again. i had two questions come up.
1) does clock recovery normally take place after fm demod?
2) what clock recovery algo would one normally find in a receiver like
a GSM receiver?
thanks
jeff
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I am currently exploring the multiple USRP Tx problem. I came across a
thread from 2006 with someone working on similar problems... Has there
been any progress on this? I don't want to duplicate any work.
Thanks
On Sun, Apr 16, 2006 at 08:09:39PM -0400, Elaine Garbarine wrote:
> On 4/15/06 4:32
Have you looked at the usrp_rx_cfile.py file? It captures rx to a file.
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Attached is my file (messy) that I trimmed down and was working with.
It is really just usrp_siggen and usrp_oscope combined.
On 7/13/07, Jeffrey Karrels <[EMAIL PROTECTED]> wrote:
Is there any problem of connecting a usrp.source_c to an usrp.sink_c?
I reverted to try and simply connect t
Is there any problem of connecting a usrp.source_c to an usrp.sink_c?
I reverted to try and simply connect the two in software when
something else I was trying was not working. When I start running my
script I see it attach to my subdevices (rfx1800_rx, lftx), but then
completes the script right a
Has anyone written a M&M clock recovery (like gr_clock_recovery_mm_xx)
in MATLAB?
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Matt
Jeffrey Karrels wrote:
> Hello all
>
> Let me try and explain my issue.
>
> I have a file source connected to a filter and a scope sink. I see
> that my scope only displays data if the source file is size x or
> greater. (around 2100 samples in my case). In cases where
Hello all
Let me try and explain my issue.
I have a file source connected to a filter and a scope sink. I see
that my scope only displays data if the source file is size x or
greater. (around 2100 samples in my case). In cases where the input
source file is smaller than x I get a blank (white)
great stuff!
On 7/6/07, Jeffrey Karrels <[EMAIL PROTECTED]> wrote:
Thanks I will take a look at it.
On 7/6/07, Matt Ettus <[EMAIL PROTECTED]> wrote:
> Jeffrey Karrels wrote:
> > Sorry I was being lazy, I should have further defined my issue.
> > ...
> > fro
Thanks I will take a look at it.
On 7/6/07, Matt Ettus <[EMAIL PROTECTED]> wrote:
Jeffrey Karrels wrote:
> Sorry I was being lazy, I should have further defined my issue.
> ...
> from gnuradio.wxgui import scopesink
> ...
> self.scope = scopesink.scope_sink_c(self,
))
-
The second connect gives me the following error:
raise ValueError, 'port number out of range.'
ValueError: port number out of range.
Am I using the wrong scope? Do I have to add channels some how?
Thanks
Jeff
On 7/6/07, Matt Ettus <[EMAIL PROTECTED]>
Hello all
I have a complex signal coming in from the USRP that I am filtering
and sending to a scope_sink. Now I wish to add a channel on that same
scope and output a square wave It seems like I can do it, I am just
having issues of figuring out how to do it.
Any suggestions?
Thanks
Jeff
__
Message: 2
Date: Thu, 05 Jul 2007 10:10:15 -0700
From: Matt Ettus <[EMAIL PROTECTED]>
Subject: Re: [Discuss-gnuradio] why two switches and two Rx in RFX
...
I use two sets of USRP with RFX900 to test a FDD( frequency devision
duplex) by cable connection. According to my experience, the cable
l
Has anyone tried to listen in on what one of those chest heartrate
monitors (for cycling, running, etc) to see what they are
transmitting? I'm curious.
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Hello everyone.
I am looking at the frequency correction burst of a GSM signal.
According to spec the original data defines 148 bits of 0 that are
differentially encoded and GMSK modulated. After the data goes
through the differential encoder it ends up as [-1,1,1, (142 1s),
1,1,1]. I have take
Hello all.
I am modifying a block (GSSM) and wish to include USRP code into it.
I think I am having linking problems and am wondering if someone could
point me in the right direction for including the USRP libs into the
build process. I have a block in which I have:
#include
...
usrp_standard_
fail because there is no "implementation for controlling the
daughterboards in C++"??? (for the time being) Am I reading that
correctly?
Thanks
Jeff
On 6/11/07, Eric Blossom <[EMAIL PROTECTED]> wrote:
On Mon, Jun 11, 2007 at 10:50:06AM -0400, Jeffrey Karrels wrote:
> Are the
Are there any additional C++ example programs floating around? I wish
to start writing a program that can tx via the USRP from C code and
just want to get a better feel for the make process.
Thanks
Jeff
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--| 3 | 4 | --- gnd
io_tx_13 ---| 5 | 6 | --- gnd
io_tx_12 ---| 7 | 8 | --- gnd
io_tx_11 ---| 9 | 10 | --- gnd
io_tx_10 ---| 11 | 12 | --- gnd
io_tx_09 ---| 13 | 14 | --- gnd
io_tx_08 ---| 15 | 16 | --- gnd
Thanks
Jeff
On 6/8/07, Jeffrey Karrels <[EMAIL PROTECTED]> wrote:
Hello.
I
Hello.
I have a couple of questions about the digitial IO pins, and if
someone could point me in the right direction I would appreciate it. I
have a DBSRX on side A and a RFX1800 on side B. I wish to output on a
single IO pin. I have tried the following code:
python
from gnuradio import usrp
"As I hinted at in an earlier email, what we've done is
create a custom verilog load that takes the data lines after the FIFO but
before the CIC filter and routes some of them out to IO pins on the
daughtercard (which seem to be 0-3.3V LVTTL levels)."
Steven or anyone else. Is there any other or
Hello. Does anyone have a working model of a simple random source or
file source GMSK modulation demodulation for comparison between the
input and output. This isn't actually going out to RF, just connecting
the blocks in GNURadio.
source file >> gmsk mod >> gmsk demod >> sink file
The reason I
Thanks. That is just what i was looking for. From the read_complex
file I was able to create a write_complex that takes in a complex
array and filename.
I attached it.
On 5/8/07, Brian Padalino <[EMAIL PROTECTED]> wrote:
On 5/8/07, Jeffrey Karrels <[EMAIL PROTECTED]> wrote:
&g
Hello.
I have an array in MATLAB that is the IQ data in complex form of a
capture from my hardware. I wish to now feed this to GNURadio. What
format do I export/save this array to file? Are there any example .m
files floating around for this task?
Thanks
Jeff
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