On Thu, Sep 25, 2008 at 11:18 PM, Paul Miller
<[EMAIL PROTECTED]> wrote:
>
>
> On Thu, Sep 25, 2008 at 1:41 PM, Stan Slonkosky <[EMAIL PROTECTED]> wrote:
>> Ramakrishnan, VU3RDD, in March 2006, said he had made a crude first
>> version of a demodulator for the softrock. See
>> http://www.zerobeat.
http://www.wired.com/science/discoveries/news/2007/12/time_hackers
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This week's LWN has a nice writeup on GNU Radio. It is currently a
subscriber-only content and will be available for the rest of the
folks next week.
http://lwn.net/Articles/247347/
Ramakrishnan, VU3RDD
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http://cag.csail.mit.edu/ps3/index.shtml
It is just launched in India and is priced way too high at about Rs
40,000 (1 USD ~= Rs 42.0).
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http://www.arrl.org/news/stories/2007/02/22/102/?nc=1
ARRL Seeks Comments on New HF Digital Protocol
NEWINGTON, CT, Feb 22, 2007 -- The ARRL is seeking comments from
amateurs concerning development of an open-source (non-proprietary)
data communications protocol suitable for use by radio amateur
On 1/10/07, Martin Dvh <[EMAIL PROTECTED]> wrote:
Hi all,
Does anybody know of an opensource morse decoder (algorithm or program) which
we can integrate into gnuradio.
We could invent the wheel again, but I think there should be good algorithms
out there already.
There is an algorithm here:
On 10/24/06, Kyle Zhou <[EMAIL PROTECTED]> wrote:
README.singla_flow in gr-atsc directory shows a great framework for ATSC Tx
& Rx.
However, it mentioned VrFileSink & VrFileSource, on which I have no idea. I
searched the whole package directory without finding their codes.
Is there anything wron
On Thu, October 19, 2006 1:21 am, Dawei Shen said:
> Hey guys
>
> A question not quite related to GNU Radio. Does there exist any fast
> algorithm for computing the square root of a float number? In my
> algorithm,
> I need to compute the square root of a float number which ranges between 0
> and 1
On 10/15/06, Eric Blossom <[EMAIL PROTECTED]> wrote:
On Sat, Oct 14, 2006 at 04:03:25PM -0700, Johnathan Corgan wrote:
>
> libgnuradio-core0c2a
> libgnuradio-core0c2a-dbg
> libgnuradio-core0-dev
> usrp
> usrp-firmware
> libusrp0-dev
> libusrp0c2a
> libusrp0c2a-dbg
> python-gnuradio
> python-usrp
On 5/31/06, Philip Balister <[EMAIL PROTECTED]> wrote:
I am the maintainer for the usrp bb file in OE. It includes a patch that
makes it work for USB1.1 interfaces. This patch may be a problem if you
have access to machine with a USB2.0 controller.
I should have time to update the version to a
I uploaded 2.7 -core and gr-audio{alsa, oss, jack}, -examples and -wxgui
this morning into Debian Unstable. You can expect -portaudio packages to
hit unstable archives soon. If you track Debian Unstable, this is the time
to update. I also hope amd64 users will have no problem this time with
these
|| On Mon, 13 Mar 2006 10:10:31 -0800
|| Eric Blossom <[EMAIL PROTECTED]> wrote:
eb> It currently plots by drawing lines between data points.
eb> You'd need to change it one of a couple of ways:
eb> * draw vertical lines from the bottom horizontal axis to the right Y
value.
eb> * cha
I was looking at the fftsink.py and the plot.py that it uses. Is there a
simple way to plot a graph with everything down under the points also filled
with a colour ? I am trying to see if plot.py has a way to do that.
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On 3/13/06, Berndt Josef Wulf <[EMAIL PROTECTED]> wrote:
> multi_tone.py is now broken as it requires audio_portaudio and audio_jack
> modules.
>
> barossa: {11} ./multi_tone.py -O /dev/audio
> Traceback (most recent call last):
> File "./multi_tone.py", line 25, in ?
> from gnuradio import a
Hi Stephane,
|| On Sun, 5 Mar 2006 16:15:56 +0100
|| Stephane Fillod <[EMAIL PROTECTED]> wrote:
f8cfe> I hope you won't mind if I Cc:'d this message to the discuss-gnuradio
f8cfe> list.
Not at all. I should have sent the original email to the list in the first
place. Sorry about that.
On 1/7/06, John Ackermann N8UR <[EMAIL PROTECTED]> wrote:
>
> After searching the archive, it seems that stack size may cause some
> problems. My ulimit -s is 8192. I don't know if that's an issue in
> this case or not.
My ulimit -s is 8192 too. I am running Debian unstable on x86-64
running in
The 2.6 packages are in the unstable. I corrected a major mistake that
I did in the past (naming wxgui binary as python-wxgui), it is now being
called gr-wxgui. This was because of my misinterpretation of the debian
python policy.
--
Ramakrishnan, VU3RDD
__
On Fri, December 2, 2005 7:39 am, Dawei Shen said:
> However, I could only understand the general framework so far. Could you
> please provide more details? Especially which book or paper did you refer
Dawei,
Heinrich Meyer, et al "Digital Communication Receivers" has a lot of these
details. Warn
On 11/7/05, Gituma Nturibi <[EMAIL PROTECTED]> wrote:
> Thanks for the info on the softrock board by Michael sonds like something
> that I can afford on my student budget- But the board is specified for
> 7-12Mhz. does this mean that it can receive SW broadcast or is it just for
> the amatuer bands
On Wed, October 26, 2005 11:16 pm, [EMAIL PROTECTED] said:
> There is a 60 second sample at 20 meters during a contest. Look for
> PSK-31 down low along with RTTY.
>
> http://www.kd7lmo.net/ground_gnuradio_ota.html
Thanks.
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Ramakrishnan
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Is there PSK31 sample captures available somewhere or can be made
available somewhere?
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|| On Sun, 23 Oct 2005 11:09:58 -0700
|| Eric Blossom <[EMAIL PROTECTED]> wrote:
eb> I think you're on the right track. Does the code below work OK?
eb> That is, if you drop the reference to waterfall_block, does it work
eb> OK.
You mean the code I attached in the first post? No, it does
Folks,
I am trying to implement a GUI frontend for the little Softrock40 board
from amqrp. I have a very primitive but usable radio up and running.
This is what I am trying to do. On the click of a button, the user
should be able to switch from a FFT view to waterfall view. To do this,
I stoppe
On Mon, October 17, 2005 7:48 am, Eric Blossom said:
>
> Your audio card probably doesn't handle 48000 natively.
> Try specifying plughw:0,0 as the audio device.
I clearly remember using it at 48khz before. Anyway, I have one more
soundcard with me, will try with that. Thanks.
--
Ramakrishnan
I am noticing that when I give a sampling rate of say 8 khz using
audio.source or audio.sink, alsa always gives a sampling rate
of 44.1khz. This is the message it gives out:
audio_alsa_sink[hw:0,0]: unable to support sampling rate 48000
card requested 44100 instead.
I am running the last rel
An interview with Dr Vanu Bose.
http://in.rediff.com/money/2005/oct/04inter.htm
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|| On Tue, 30 Aug 2005 18:44:28 -0700
|| Eric Blossom <[EMAIL PROTECTED]> wrote:
eb> On the Linux side, there are *many* people who build the whole system
eb> without problems. For ease of installation, I strongly suggest that
eb> you stay away from Debian and try building on Mandriva (nee
Folks,
I just uploaded the 2.5 version of gnuradio-core and all the other packages
(wxgui, gr-audio-*, examples) into Debian Unstable. These are built with
the new g++ 4.x package.
Another good news is that wxgtk 2.6 is now in Debian unstable. So those of
you who were waiting for it (after the a
It looks like something like this is possible in newer wx releases.
I haven't tested it yet, though...
import wxversion
wxversion.select('2.6')
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Use Free Software -- Help stamp out Software Hoarding!
On Tue, June 28, 2005 10:30 am, Ges said:
> Hi,
> I am a newbie trying to build gnuradio...i was
> following the instructions at
> http://www.kd7lmo.net/ground_gnuradio_baseline.html.
>
> Well, after installing all the required base software,
> i checked out the latest code from CVS...
>
> but make
On Wed, June 22, 2005 9:04 am, Prateek Dayal said:
> Yeah .. this seems like a good idea because for individuals like
> me purchasing a webspace is not a very feasible option and also
> every contribution gets scattered that way. With something along the
> lines of Matlab Central http://
For those looking into analog TV, there is another report and Matlab code
from Stanford at:
http://www.stanford.edu/class/ee392j/Winter2002/projects/zimet_report.pdf
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On Thu, June 16, 2005 5:49 pm, shweta vishwakarma said:
>
> Hi all,
> Please tell me what does this gr.float_to complex does ? Is it somewhat
> related to I and Q phases?
From:
http://www.gnu.org/software/gnuradio/doc/gr__float__to__complex_8h.html
"Convert 1 or 2 streams of float to a stream o
All the gnuradio related stuff is in the Debian archive, so with
proper lines in the apt sources.list, you can install all of them.
Also if you pull the sources from debian archive, you can look at the
build-dependencies and also the configure commandline.
--
73 - Ramakrishnan, VU3RDD
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Lengthy URL...
http://focus.ti.com/docs/general/splashdsp.jhtml?&path=templatedata/cm/splashdsp/data/dri300_350
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On Thu, June 2, 2005 9:38 am, Ravichandran_Shivakumar said:
> Hi Eric,
> Thanks for your reply.As you said I have gone through the
> document which you have told and created my own class.Now I need to put
> this on USRP board.We need to know where exactly we must put these codes
> into to the
|| On Mon, 30 May 2005 08:44:10 -0400
|| John Ackermann N8UR <[EMAIL PROTECTED]> wrote:
jra> I'm trying to install via debian packages. I've added the gnuradio
jra> repository to my /etc/apt/sources.list file, and have been able to
jra> install several of the packages. However, I'm getting
There is an article (only for paid readers at the moment) on Prof Moglen's
speech at linux.conf.au. Here is a quote on SDR situation in Japan. I hope
quoting a small portion of the article is "fair use".
In response to a question about software-controlled radios: that is a
global problem, not jus
Found these signal sample files on the web.
http://www.kb9ukd.com/digital/
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Someone asked about ALSA docs a while back. I found a really nice
site today about ALSA and thought of sharing with the list.
http://www.sabi.co.uk/Notes/linuxSoundALSA.html
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|| On Thu, 3 Mar 2005 10:34:15 -0500 (EST)
|| Charles Clancy <[EMAIL PROTECTED]> wrote:
clancy> Cool, that seems to work. Is there a derivative block? Something
clancy> that takes float f(x) and returns float f'(x)?
A filter with taps [1, 0, -1] works "satisfactorily" as a differentiator.
For those who do not read the excellent newsgroup comp.dsp, here is a link
to a tutorial on hilbert transform that was posted today:
http://personal.atl.bellsouth.net/p/h/physics/hilberttransforms.pdf
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It's in unstable, there were some experimental packages at
pkg-swig.alioth.debian.org
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On Wed, 2 Mar 2005 10:32:33 -0500 (EST), Charles Clancy
<[EMAIL PROTECTED]> wrote:
> > from gnuradio import gr
> > from gnuradio import mypkg
Just do
import mypkg
instead of importing it from gnuradio
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|| On Sat, 26 Feb 2005 04:04:12 -0500
|| Chuck Swiger <[EMAIL PROTECTED]> wrote:
cswiger> with one gr.freq_xlating_fir_filter() like I use in the weaver SSB
cswiger> demod. I guess you can
Chuck:
Thanks. I had it initially, but while debugging the script, I replaced all
with individual bl
|| On Fri, 25 Feb 2005 20:34:31 -0800
|| Eric Blossom <[EMAIL PROTECTED]> wrote:
eb> Thanks.
eb> Any reason you're not using the gr.hilbert_fc block?
eb> I combines the hilbert transformer and the delay in one block.
Eric,
Here, the data to delay and data to hilbert filter are entirely di
ht (c) 2005, FSF under the GNU GPL v2 or later
# Author: Ramakrishnan Muthukrishnan <[EMAIL PROTECTED]>
#
# Phasing SSB receiver based on block diagram from the article
# "High Performance, Single-Signal Direct Conversion Receivers"
# by Rick Campbell, KK7B, QST Jan 1993
# Progr
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#!/usr/bin/python
# copyright (c) 2005, FSF under the GNU GPL v2 or later
# Author: Ramakrishnan Muthukrishnan <[EMAIL PROTECTED]>
#
from gnuradio import gr
from gnuradio import audio
from gnuradio.wxg
I plotted the hilbert transform freq response, it seem to be fine.
The earlier overflow error was because the filter response contained
0's and it was trying to take a log10 of 0..
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Followup of the previous email, I tried plotting the hilbert transform
frequency response using the gnuplot_freqz script, but am getting math
overflow error while doing the Numeric.log10 (). I will try plotting
by other means like octave in meantime.
Thanks
--
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onous detection
# Donald ducking is due to difference in freq b/n carrier and LO.
# copyright (c) 2005, FSF under the GNU GPL v2 or later
# Author: Ramakrishnan Muthukrishnan <[EMAIL PROTECTED]>
#
# Phasing SSB receiver based on block diagram from the article
# "High Performance, Sing
On Tue, February 15, 2005 11:19 am, Thomas Traber said:
> In hardware a Weaver modulator avoids
> the need for the phase shifting baseband
> filters.
> What is the reason for using a Weaver
> modulator
See the thread:
http://lists.gnu.org/archive/html/discuss-gnuradio/2004-11/msg00119.html
I am
|| On Mon, 14 Feb 2005 00:14:05 +1030
|| Berndt Josef Wulf <[EMAIL PROTECTED]> wrote:
wulf> try changing the value for the HI transition band to <=4000.
Thanks.
I do not get any exception, is there something else I need to turn on
to see the exception messages? I just get the "aborting" mes
Hi,
I am trying to implement a bandpass filter. I have gnuradio 2.4 installed
on my system.
>From python cli, if I execute
>>> from gnuradio import gr
>>> input_rate = 8000
>>> coeffs = gr.firdes.band_pass (
... 1.0,# gain
... input_rate,
... 1200, # ce
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