Re: [Discuss-gnuradio] Upgrade to Fedora 7?

I've been using Ubuntu with much better results. You'll spend less time fixing the OS and more time on doing GNU radio stuff. On Tue, 7 Aug 2007, Marcus Leech wrote: > I'm considering upgrading my receiver 'puter (a Dual-core Pentium > system) from FC6 to Fedora7. > > Anything I need to know

Re: [Discuss-gnuradio] KD7LMO GPS sample and sample rate nomenclature

Either I recorded them as 64-bit floats (double) or I did the conversion from time in seconds to samples incorrectly. The capture script I wrote is located at: http://www.kd7lmo.net/ground_gnuradio_software.html The code calls the file_sink method. I'm not sure what units/types it generates.

[Discuss-gnuradio] USRP Enclosure

Couldn't find a photo of the new USRP Enclosure on the Wiki or Matt's web site, so I posted one on mine: http://www.kd7lmo.net/ground_gnuradio.html The new enclosure is nice. Heavy gauge metal and it gives the USRP a finished, professional look. ___

Re: [Discuss-gnuradio] 10.7 IF output Scanner Suggestions sought

AOR makes a good set of radios with IF outputs. http://www.aorusa.com/b&m.html High IP3, wide frequency range, and 10MHz BW IF. You can also disable the AGC from the front panel. On Tue, 12 Dec 2006, M. Ranganathan wrote: > I am hoping somebody can recommend a scanner with a 10.7 MHZ IF outp

Re: [Discuss-gnuradio] distribution of USRP image

Feel free to use the picture. If you want to post a credit on it, that would be nice, but not required. Michael Gray KD7LMO (Radio Call Sign) On Tue, 14 Nov 2006, Eric Hill Matlis wrote: > Matt- > > I have giving a presentation at this year's American Physical Society > Fluid Mechanics meet

Re: [Discuss-gnuradio] The coming deluge of CPU cycles

I'd vote for Gigabit Ethernet as an interface. It offers the following: 1. Place the USRP very close to the antenna. 2. Distribute the signal to multiple computers. (Multi-cast IP) 3. Very low cost infrastructure of Ethernet switches and cables. 4. Ethernet is easier to use across common platf

Re: [Discuss-gnuradio] atsc receiver error rate: 5.19e-05

As a side note, if you want to keep the program in HD you can burn the MPEG program on a standard red-laser DVD and play them with this DVD player: http://pro.jvc.com/prof/attributes/press_res.jsp?model_id=MDL101546&feature_id=08 You'll have to burn it as a DL disc, but 8 MB would fit. You can

Re: [Discuss-gnuradio] Stereo gain "hacked"

Here is a link to the RBDS standard: ftp://ftp.rds.org.uk/pub/acrobat/rbds1998.pdf And another link to the digital AM radio standard: http://www.ibiquity.com/technology/pdf/Waveforms_AM.pdf On Tue, 14 Feb 2006, Robert McGwier wrote: > Al, Matt: > > Thanks for your input. I am pretty ignora

Re: [Discuss-gnuradio] d_usb_data_rate

In the context of GNU radio it probably meant, Scientific Wild Ass Guess On Thu, 19 Jan 2006 [EMAIL PROTECTED] wrote: > Stuff We All Get = SWAG > > i.e. Handouts > > Vy 73; > > Bob > w9ya > > > > SWAG -- basically a guess. See > > http://www.urbandictionary.com/define.php?term=swag (usage

Re: [Discuss-gnuradio] gmsk error

Try http://www.superbookdeals.com/ Search by ISBN, they can ship it in a couple days. "Only" $89. On Tue, 6 Dec 2005, [EMAIL PROTECTED] wrote: > On Tue, 6 Dec 2005 14:24:43 -0800, Eric Blossom [EMAIL PROTECTED] wrote: > > Quick answer: > > > > use the defaults. > > > > Involved answer: >

Re: [Discuss-gnuradio] gmsk error

> On Thu, 1 Dec 2005 16:02:59 -0700 (MST), mgray wrote: > > The following is a link to CRC16 for the PIC controller with similiar > > memory limitations: > > > http://www.kd7lmo.net/picobeacon_code.html > > I looked at the code and all I could find was the function

Re: [Discuss-gnuradio] gmsk2 - CRC and whitening

The following is a link to CRC16 for the PIC controller with similiar memory limitations: http://www.kd7lmo.net/picobeacon_code.html On Thu, 1 Dec 2005, Eric Blossom wrote: > On Thu, Dec 01, 2005 at 05:42:36PM -0500, [EMAIL PROTECTED] wrote: > > Good suggestions, will look into implementing C

Re: [Discuss-gnuradio] Reflection Vector Analyzer

Damn, I just bought an Agilent 5230. :) I should have waited. Looks good though. On Wed, 9 Nov 2005, cswiger wrote: > Gang - My Vector Analyzer works amazingly well enough that I put up > a brag page: > > http://webpages.charter.net/cswiger/phase/reflection_smith/smith_chart.html > > that is

Re: [Discuss-gnuradio] PSK31 samples?

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 On Wed, 26 Oct 2005, Ramakrishnan Muthukrishnan wrote: > > Is there PSK31 sample captures available somewhere or can be made > available somewh

Re: [Discuss-gnuradio] (no subject)

I removed the xerces stuff from the build and install scripts last month. You may want to download the scripts again: http://www.kd7lmo.net/ground_gnuradio_baseline.html On Sat, 22 Oct 2005, Robitaille, Michael wrote: > >On Fri, 21 Oct 2005 14:26:23 -0700, Eric Blossom wrote: > > > > >>

Re: [Discuss-gnuradio] 2.6 release coming RSN

Yes, yes, half-band filter! On Fri, 21 Oct 2005, Eric Blossom wrote: > Yes, I know it's *really* time for a new release. > [I can tell because I keep telling everyone to use CVS!] > > Anyhow, there are a few things still left to finish off. > > In no particular order: > > * Finish refactor

Re: [Discuss-gnuradio] Need some answers about FM TX

Here is an article that discusses using this technique in a radio: http://img.cmpnet.com/commsdesign/csd/2002/oct02/eamon-fig3.jpg Here is a graphic that shows the various images that are present in the spectrum. http://img.cmpnet.com/commsdesign/csd/2002/oct02/eamon-fig3.jpg This is not a cl

Re: [Discuss-gnuradio] Need some answers about FM TX

The same does apply to a DAC as well as an ADC. They are both sampling systems. A DAC typically has a low pass filter to cut all the alias images. But you can also bandpass filter those images to produce the desired signal. The system is very linear and isn't a mixer. Here is my original po

Re: [Discuss-gnuradio] Can I do this?

Another trick to get higher frequencies is to use an image that is produced the DAC. If you program the DAC to 29.3 MHz, you'll also get RF at the SampleRate +/- DAC Freq. So you'll get a signal at 128 - 29.3 and 128 + 29.3. So in this case 98.7 and 157.3. The signal levels will be lower, bu

Re: [Discuss-gnuradio] Instaling Baseline requirment problem

As requested, the build sample information has been updated: http://www.kd7lmo.net/ground_gnuradio_baseline.html On Tue, 20 Sep 2005, Eric Blossom wrote: > On Tue, Sep 20, 2005 at 12:18:10PM +, Robert McGwier wrote: > > Same here: > > > > Under Suse 9.3 (WHICH I HAVE HAD FOR MONTHS) 8-)

Re: [Discuss-gnuradio] Instaling Baseline requirment problem

Sure, I can remove the xerces stuff from the install. I think it may have been required for octave, but I'm not sure. If there are any other thoughts or suggestions, let me know. On Tue, 20 Sep 2005, Eric Blossom wrote: > On Tue, Sep 20, 2005 at 12:18:10PM +, Robert McGwier wrote: > >

[Discuss-gnuradio] New OTA Samples

As requested over the past month or so, additional over the air samples have been captured. These samples will let you experiment and build GNU radio applications without the USRP and related RF hardware. The samples include 60 seconds of GPS L1 C/A code (large 420MB download), Trunked Radio c

Re: [Discuss-gnuradio] NTSC Demo

contributing > tothe project can put up some files even if moderated by an > administrator ... > > Regards > > Prateek > > PS: mgray it would really help if you can also put up the thesis and > the demo video on your website ... > > On 6/20/05, [EMAI

Re: [Discuss-gnuradio] NTSC Demo

I reposted the code at: http://www.kd7lmo.net/gnuradio/tv_code.zip On Mon, 20 Jun 2005, Thom Rainwater wrote: > > > > Hi, > > > > Sorry ... the correct link to the thesis is > > > > www.geocities.com/pmd_iitgw/thesis.pdf > > > > and the link to

Re: [Discuss-gnuradio] CVS compilation problem (actually a test fails)

I've posted an installation guide for GNU radio that might be helpful: http://www.kd7lmo.net/ground_gnuradio_install.html Maybe someone can post a link from the Wiki to my site. On Mon, 2 May 2005, n4hy wrote: > I wasted an entire WEEKEND trying to figure this out. > > Bob > > > [EMAIL PRO

Re: [Discuss-gnuradio] newbie installation questions

Here is my installation guide for FC3. Not perfect yet, but it might help you out: http://www.kd7lmo.net/ground_gnuradio_install.html On Wed, 27 Apr 2005, Jamie Morken wrote: > Hi, > > I am installing gnuradio on fedora core3 and am getting some errors with > python, I am able to test the

[Discuss-gnuradio] OTA Samples

I've posted some new OTA samples that include FM broadcast stations. Stations contain SCA (Subsidiary Communications Authorization) and RBDS (Radio Broadcast Data System). The RBDS system provides song title, artist, station callsign, and other basic information that is displayed on common au

[Discuss-gnuradio] TVRX AGC Disable

Is there a way to disable the AGC on the TVRX (cable MODEM) board? If a strong signal appears within the 6 MHz BW the AGC is activated and many weak signals are lost. It limits the receiver dynamic range to about 10dB. Thanks ___ Discuss-gnuradio

Re: [Discuss-gnuradio] Built most of gr-*

John, I have a set of Over-The-Air captures of a wide variety of signals for download: http://www.kd7lmo.net/ground_gnuradio_ota.html As well as sample GNU radio code to demod and process them: http://www.kd7lmo.net/ground_gnuradio_software.html Hope that helps and gets you started. On W

Re: [Discuss-gnuradio] FFT Baselines curved?

That is the shape of the 4-stage decimating CIC filter in the FPGA. For now, sample at 2X or 4X the desired band width and then process using the host processor. Half band filters are on the way to help correct this problem. On Mon, 18 Apr 2005, Lamar Owen wrote: > Anyone have any idea why

Re: [Discuss-gnuradio] No module named wx

I fixed it by adding the following softlink: ln -s ./wx-2.5.5-gtk2-ansi/wx in the .../lib/python2.3/site-packages directory. Worked fine after that. There is a wx.pth in the site-packages directory that Python should use to follow it, but it doesn't work. This was a quick fix. Hope that he

[Discuss-gnuradio] Installation Guide

Since there seems to be a lot of questions on getting all the software installed for GNU radio, I've put together an installation guide and shell scripts to hopefully greatly simplify the process: http://www.kd7lmo.net/ground_gnuradio_install.html All comments and suggestions are appreciated.

Re: [Discuss-gnuradio] Segmentation fault

I built gcc-3.4.3 from the ground up and then built all the support applications and GNU radio using gcc 3.4.3. I still get the same core dump if I use the --enable-sse command line argument. If I REMOVE this setting and build it, everything works fine. I do have the core files and can do any

Re: [Discuss-gnuradio] usrper fails in usb_claim_interface

Are you physically plugged into a USB 2.0 port? A system may have multiple of USB ports, but not all of them are 2.0. Many will be USB 1.1 (high-speed 12mbps) devices. If you run usbtree, you can verify your connection. The following is an example of the USRP connected to an USB 2.0 port. [E

Re: [Discuss-gnuradio] Segmentation fault

I built FFTW with ./configure --prefix=$HOME/gr --enable-single --enable-shared and wxPython-src-2.5.4.1.tar.gz under Red Hat FC 3 with all updates (using up2date) and it now runs all the gnuradio-examples It looks like there is some sort of problem in libfftw3f with the SSE instructions. I'

Re: [Discuss-gnuradio] Fresh NTSC samples needed

I've just posted a wide variety of NTSC captures from a signal generator. Included are black (sync only), SMPTE color bars, solid color raster (red, green, and blue), ramps, and a cross hatch pattern. Each also includes the sound carrier with a 1KHz test tone. http://www.kd7lmo.net/ground_gnu

Re: [Discuss-gnuradio] BPSK, Costas loop

I've built and flown a PSK-31 transmitter on board a high altitude weather balloon. The HF signal is useful for over the horizon tracking. Although it wasn't done using GNU radio, all the hardware and software is open source. This could be adapted to work with GNU radio: http://www.kd7lmo.ne

[Discuss-gnuradio] USRP Sampling

I have the following program to capture USRP samples and write them to a file. What is a simple way to have the program capture for X number of samples and then stop? Thanks from gnuradio import gr from gnuradio import audio from gnuradio import usrp from gnuradio.eng_option import eng_optio

Re: [Discuss-gnuradio] Fresh NTSC samples needed

Would it be helpful to capture NTSC color bars or other test signals? I have an USRP and TEK signal generator. Where is 0Hz IF when you capture video? On Tue, 29 Mar 2005, Prateek Dayal wrote: > Hi, > > I am testing my NTSC color decoding algorithm currently. The problem > that I am facing i

[Discuss-gnuradio] OTA Samples (GPS/HF)

I've posted a number of OTA (Over The Air) samples on my web page. These include 7.2 and 10.0 MHz captures in the HF band. (As requested by someone on this board). Also included is 2 second snap shot of GPS L1 carrier. Should be good for some software work. Captures: http://www.kd7lmo.net

Re: [Discuss-gnuradio] wxPython and FC3

Thanks for the information. I did install the RPMs as well as version libstdc++-3.3.3-7 from FC2. The wxPython*rpm were expecting version libstdc++.so.5 of the C++ libraries. However, I have the same core dump issues. Using the nbfm_rcv.py from the latest CVS gnuradio-examples it runs correc

[Discuss-gnuradio] wxPython and FC3

What is the best way to get wxPython working under Fedora Core 3? I tried to download and build the source, but it has been very painful. When I run the program I typically get core dumps: [EMAIL PROTECTED] usrp]$ ./usrp_fft.py usrp: found usrp rev2 RX d'board A: Basic Rx RX d'board B: Basic R

Re: [Discuss-gnuradio] Looking for signals

Dan, I can snap that for you. What time of day do you want? I'm in the SW US. Any other HF bands? On Fri, 18 Mar 2005, Dan Gisselquist wrote: > Hello all, > > I'm looking for someone who could get me a 30 second cut of the 14 MHz band > from 14.0 MHz to 14.1 Mhz. I'm hoping for roughly

Re: [Discuss-gnuradio] Missing Makefile.in

Yes, I have to do that with FC3 and the latest patches. It reports the same error you are showing below. On Mon, 28 Feb 2005, Joshua Lackey wrote: > Does anyone else have to "./bootstrap" twice in a freshly checked-out > tree? > > I'm wondering if it is just my setup, but I have to "./bootstr

Re: [Discuss-gnuradio] Some nice HUM

Some NBFM voice signals also include a sub-audible tone for squelch control. These are typically in the range 67Hz to 255Hz. You might be hearing these. >From additional information: http://www.eecis.udel.edu/~dra/pl.html On Tue, 22 Feb 2005, James Cooley wrote: > Hi all, > > OK, Got FM r