g' that a peak would appear at
offset x from the right or
left side of the spectrum will be more likely to succeed.
John Clark.
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oster named, '[EMAIL PROTECTED]' who
posted one notice. Since we had been looking for a forum to make a more
public presentation of what we've been
doing, I jumped on it...
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. This giving the user the impression
that all that's there is background noise...
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h different PHYs that you could re-program the MAC on.
Almost instant negative... I have my Master from UCSD, the consolation
prize for those who didn't get a PhD... and further... have not
forgotten the nonsense with UCSD Pascal and the Regents...
at.
For those who have information, and send me a release, credit will be
made in the paper for their contribution.
Thanks,
John Clark.
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as heartened to see that in the area of image recognition things
haven't changed in 20
years... we were telling managers that these were hard problems, and
dispite that, they
would sell pie-in-the-sky capablity, and of course, without any
attendent development
budget... because all it was so
.. improve performance in any way.
Back when I worried about such things, I usually thought about
maintaining everything in 'integer' form, and should I have needed a
'FFT', I would start thinking
about Galois Fields, prime generator polynomials... and the like, but
stay
GNURadio could be used
monitor and then to inject a small amount of 'noise' in to the line to
'cover'
any residuals picked up by the line in the house.
John Clark.
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DVB-T for the future...
John Clark.
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on...) with intracranial RFID chips...
But that aside... having the ability to do DVB would then allow one to
modify the signal with the idea of
simulating various distortions that occur in broadcast... is there an
ATSC 8VSB modulator?
John Clark.
__
Here's a paper written on a research project on the topic.
http://research.microsoft.com/research/netres/publications/lanman07.pdf
John Clark.
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elp of an LNA on the front,
these 'features' become significant.
John Clark.
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s.
We are looking at very low signal levels, and so perhaps others have not
seen these
artifacts, as they may be looking at much higher signal levels...
Thanks
John Clark.
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now call 'open software'... like GNURadio
The last time I had anything to do with Packet Radio was
when I ported it to an OS/9 setup for a small company called ITT... I
thought that would be my entry in to the big time... ha... well
anyway...
John Clark.
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7; problem, I'd
like to fix it... if it is a 'less that serious' problem, I can wait
until it filters out to the main set of code...
John Clark.
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t the full 'python' environment that is
needed to
run GNURadio.
Thanks,
John Clark.
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David Young schrieb:
On Mon, Jul 23, 2007 at 04:05:07PM -0700, John Clark wrote:
, but because of the FCC's paranoia (and other regulatory agencies
around the world...),
John,
Does any written statement from the FCC give credence to the "regulatory
excuse" for keeping
t part of
the development costs. However for many smaller operations, or even 'low
funded' operations
in bigger companies these sorts of regulations are basically brick walls
to innovative products...
John Clark
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t ruling is publicly stated as
to prevent someone, somewhere,
somehow misusing the equipment... as if that was not impossible by the
closure of the information
at this level.
Obviously this would get more so, when the 'chip' is replac
et loaded up if I run the diagnostic
exe files.
Thanks
John Clark.
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sourced
to get things going?
Also, on the topic of Windows support, is the 'graphics' using the
windows native environment
or does one have to run an X server?
Thanks
John Clark.
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htt
ences', etc. can be read/written, rather than
using say, /tmp or similar 'well known'
writeable location.
I'll have to do a find on the gnuradio sources to find the specific
reference, and then figure out
'what to do'...
John Clark.
is probably why there is a '(null)' in front of the directory for the
prefs, as
there may be no assigned directory for the http 'user' being used to
initiate
the application.)
Thanks
John Clark.
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: 0.9
TRAILING_EDGE_DETECTION_THRESHOLD: 0.3
SDL screen_mode 32 bits-per-pixel
SDL overlay_mode 842094169
FYI: No Powermate or Contour Knob found
TV Channel 15 should be 476 - 482, and the Video at 477.25, which
I see on my FFT display of the channel.
John
What could be going wrong with my setup.
John Clark.
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age handler just hangs waiting for more messages.
Is there some 'Except' condition that is transmitted to python that I'm
missing.
Thanks
John Clark.
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stuff'. But I've not tried to get my
blocks that I'm currently
working on installed.
John Clark.
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Radio
Companion since I last announced to the list. GRC includes over 150
blocks from GNU Radio, supports all the data types (vectors too), and
includes USRP support.
Looks pretty good. How does one take the 'xml' output and turn that in
to a traditional python program.
Th
r: warning: tried to allocate
4 items of size 8200. Due to alignment requirements
512 were allocated. If this isn't OK, consider padding
your structure to a power-of-two bytes.
On this platform, our allocation granularity is 4096 bytes.
John Clark
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that looks like documentation get
built when I recently made every thing from a recent svn checkout.
Is there some package that needs to be there, and isn't on my machine,
such that documentation
would be automagically build when I build the main code set?
Thanks,
that looks like documentation get
built when I recently made every thing from a recent svn checkout.
Is there some package that needs to be there, and isn't on my machine,
such that documentation
would be automagically build when I build the main code set?
Thanks,
le rather than the graphical output...
Had I tuned into this project earlier... this would have been the
approach... however, I'm
inheriting a project... and would like to see if there are examples that
would help me
put things together quickly...
Thanks
John Clark.
Eric Blossom schrieb:
On Wed, Jan 24, 2007 at 05:00:13PM -0800, John Clark wrote:
Ok, I've been setting up a system which is based on the Linux kernel
2.6.19.1
and now have tried using the USRP device...
Well, if it worked I wouldn't be posting... the device is seen in a
2.6
Philip Balister schrieb:
I've run a USRP connected to my EFIKA (powerpc) board. The kernel is
based off 2.7.19-rc6.
I realize this kernel may be different than a more "mainstream"
kernel, but I wouldn't expect any dramatic differences in interfaces.
Maybe there is a kernel config change?
I've
Matt Ettus schrieb:
John Clark wrote:
Ok, I've been setting up a system which is based on the Linux kernel
2.6.19.1
and now have tried using the USRP device...
Well, if it worked I wouldn't be posting... the device is seen in a
2.6.17 kernel,
however, not in the 2.6.19.1.
I s
es need to be in, or loaded in, to
work correctly.
Given that I see dmesg output when the device is plug in, out, or even
accessed by
the python-usrp calls, it seem that most of USB stuff is there. Are
there any options
config files, etc for 'hotplugging' that may be getting
ebian package,
provided by Bdale Garbee, found here:
http://packages.qa.debian.org/g/gnuradio.html
This overcame many problems that I had getting GNURadio up and working,
from 'primary sources' along with the forest of
contributing packag
All,
Since I'm now involved in the project using the USRP, and am looking at
FFT's acquired, I recall some mention of a DC component of the resulting
FFT due to 'hardware'.
What is the general approach that folks have used to deal with this problem.
John Ackermann N8UR schrieb:
I'm not aware that the 8640B has any GPIB capabilities; it's a manually
tuned instrument and doesn't have a CPU.
That'll learn me to physically look at the equipment... but thanks for
the reference for GPIB
ike to automate this.
So, is there some linux package that allows for controlling the HP via a
GPIB interface
card, which does not involve the still expensive LabView?
Thanks.
John Clark
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http:
Eric Blossom schrieb:
Are you seeing underruns ("uU") on stderr? If so, then for your low
interpolation rate cases your system is failing to be able to drive
the USRP at full speed (32MB/s). What kind of h/w are you running?
Speaking of which, what does 'uO' mean
Dan Halperin schrieb:
John Clark wrote:
We are putting a new USRP module in service. Is there some firmware
setup required,
and if so what is the procedure. The 'manual' mentions if the LED is
blinking in a
certain way, that the firmware has not been loaded, but there's
doesn
to load the firmware.
Thanks
John Clark.
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Tom Rondeau schrieb:
-Original Message-
From: 'Eric Blossom' [mailto:[EMAIL PROTECTED]
On Wed, Dec 06, 2006 at 02:13:39PM -0500, Tom Rondeau wrote:
Actually, I think you should be able to detect Bluetooth without too
much trouble. If you just stare at a single point in the spectru
amiliar with, as that is not my usual area of work. If Bluetooth 'hops'
across the full
ISM 2.4 GHz band, then one can only see an occasional burst of energy,
and maybe make
some estimate given a limited window, or sweep through the band, but
dwelling in a
particular frequency
Eric Blossom schrieb:
On Mon, Dec 04, 2006 at 04:41:25PM -0800, John Clark wrote:
I seem to be inheriting a project. The original developer used
usrp_fft.py and fftsink.py as
their starting point for some development work.
However, my mission is to take what they developed, and put it into
showing how to access the usrp, and call the
underlying
fft libraries?
Thanks,
John Clark.
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ototype.
Definately less hassle that compiling from scratch on old distrubtions.
Thanks
John Clark.
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dated
about 110 modules which needed to be up to whatever level to match the
latest vlc package...
It may be that with this update I'm 'close' to supporting GNURadio on
this platform without
a lot of hand package installation...
T
Eric Blossom schrieb:
On Mon, Sep 25, 2006 at 12:45:07PM -0700, John Clark wrote:
Some time ago, there was some mention of someone who had collected a
GNURadio setup, and put it on a bootable CD. Perhaps it was just someone
thinking about it...
Anyway, if there is such a thing, I would
version of a project which is
using GNURadio, and if someone has a CD boot version, that would be
helpful to me either in the form of booting it directly, or at least
what is the core irriducible matrix of required libraries to run an
existing GNURadio project.
Thanks
unks of data from the file format to the host format.
Obviously if the files are never going to be seen outside the particular
host, it doesn't matter.
The alternative would be to format data al la a 'IFF' chunk... if there
is a float or double
format for such...
John Clark
All,
Does anyone know of any 'open source' modules for Matlab/Scilab to
similate 802.11a/g OFDM signals?
Thanks,
John Clark
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Marcus Leech schrieb:
So, I was reading over a superficial summary of U.S. export controls
today, and discovered
that radio receivers capable of more than 1000 channels (what the
heck is a channel?) and
able to switch channels in under 1ms are export-controlled technology.
It seems to me tha
ions can be called through
them? Or what
files
Is anyone using Scilab to do dsp processing using the greater GNU Radio
package?
In keeping with my 'Money is no object that I have access to' budget, I
use Scilab and R for computational processing and developmen
I had with 'old' distributions of linux, I am reluctant
to believe that Windows is any easier.
Has someone done this, and what packages, parent-packages,
sibling-packages, grand and gread-grand-packages, are required
to set things up.
Thanks
John Clark
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Eric Blossom schrieb:
On Thu, May 11, 2006 at 01:21:43PM -0700, John Clark wrote:
Just as an aside, what is SDCC... Small Device C Compiler?? and why
would that be the obvious missing thing to load in?
Uhh, because it's in the README for usrp and that when you try to run
conf
Robert McGwier schrieb:
John Clark wrote:
Eric Blossom schrieb:
On Thu, May 11, 2006 at 09:22:46AM -0700, John Clark wrote:
Patrick Strasser schrieb:
It seems to becoming an 'annual' event that I setup a GNURadio
environment, and this year's candidate machine seems
Eric Blossom schrieb:
On Thu, May 11, 2006 at 09:22:46AM -0700, John Clark wrote:
Patrick Strasser schrieb:
It seems to becoming an 'annual' event that I setup a GNURadio
environment, and this year's candidate machine seems to have almost
nothing of the antecedent packege
ewhere...
so needless to say, I'm not particularlly enthusiastic at the moment...
John Clark
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Joshua Lackey schrieb:
Quoting LRK ([EMAIL PROTECTED]):
[...]
Start reading up on Argentina folks. It's your future.
What about New Zealand?
Hey, at least New Zealand has WETA...
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hase the
'professional' hardware needed to circumvent
the 'protection' scheme.
In the present case it would most likely affect developers on a limited
budget (or no budget), in the acquisition of
parts for development and design, as well as paying for some form of
ce
omehow national
security will be impacted by 'uncontrolled' digitizers... and to date
the US representatives
have groveled at the feet of the admininstration when ever the
'patriotic' card has been
played.
John Clark
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ernment to 'find/identify' users of such equipment.)
John Clark
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hat you do at home, such as signal processing
implementations,
the only difference being that at home you used FORTRAN and punch cards,
whereas at work you used APL and a modern Cathode Ray Tube
with fancy upper and lower case character keyboard...
Less muddy is if you'
Krzysztof Kamieniecki wrote:
Eric,
Do you have a presentation you could share with us?
The question is, can you detect a police car's radio from a far enough
distance away so that you could slow down before they check your speed
with a Laser?
From what I have read, people seem to think the r
Now that I've scratched and clawed my way to a working set up for
GNURadio, I was wondering
if anyone has implemented video signal specific tools, such as a
'waveform' monitor, or a 'vectorscope'?
If not, does any one have any references as to exactly how these devices
'work', and given time an
I don't have any hardware for the highspeed conversions, and have not
set up to use 'sound cards' etc. for
low speed testing.
However, I have been able to get gnuradio-core, as well as several other
gr-* packages to compile.
The most problem seemed to be centered on having 1) a somewhat large se
Angilberto Muniz Sb wrote:
Similar situation down here in Brazil, but
after adding the softlink it complains with
"file not found..." or something similar...
Any tips on where to put some break code to help debug
the issue?
Rgrds,
Angilberto.
While I don't have any further specific information, I h
Eric Blossom wrote:
On Thu, Apr 14, 2005 at 01:23:08PM -0700, John Clark wrote:
I'll chime in on the 'easy to intuit' requirements to get any of gr-*
up, especially the gr-wxgui.
Unfortunately other projects press and I have not been able to get a
working 'graphical'
LRK wrote:
On Thu, Apr 14, 2005 at 12:01:11PM -0500, Suvda Myagmar wrote:
I also got USRP hardware recently and installed the latest baseline and
gnuradio packages to test the HW. When I ran an example this is what I got:
$ ./usrp_oscope.py
Traceback (most recent call last):
File "usrp_oscope
Eric Blossom wrote:
On Mon, Apr 04, 2005 at 05:39:35PM -0700, John Clark wrote:
John Clark wrote:
I just checked out the most recent CVS sources, using the procedure:
I then updated my version of 'autoconfig', and 'automake' to be the most
recent on ftp.
est with a known data set... )
John Clark
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John Clark wrote:
I just checked out the most recent CVS sources, using the procedure:
I then updated my version of 'autoconfig', and 'automake' to be the most
recent on ftp.gnu.org, and got the following: (truncated for brevity
sake...),
but ultimately ending with a mess
I just checked out the most recent CVS sources, using the procedure:
got gr-build
then
using the 'checkout' found in gr-build, got the rest.
From there I used './for-all-dirs ../build' in the gr-build directory.
I got this set of messages:
./for-all-dirs ../buildit
>>> /home/GNURadio/gr-build/gnura
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