Re: [Discuss-gnuradio] Can't set center frequency of USRP2 w/DBSRX

2010-08-11 Thread Moeller
On 12.08.2010 00:10, Jason Abele wrote: > Testing the id number of your DBSRX on USRP2: Thanks Jason, your diagnosis instructions are very clear now. I thought it was more than just changing an ID number. Can you add this to the official mod.-instructions on the gnuradio Wiki? It would help people

Re: [Discuss-gnuradio] Can't set center frequency of USRP2 w/DBSRX

2010-08-11 Thread Moeller
On 11.08.2010 23:11, Marcus D. Leech wrote: > In Linux, I/O to "disk-like devices" uses write-behind caching. Which > means that although your application has sent the data to the > kernel, and it has been accepted, it may not actually get written out > to disk. This improves performance in man

[Discuss-gnuradio] USRP block diagram confuse and mux setting in gnuradio question

2010-08-11 Thread Wipat phonsukkarn
I'm new for gnuradio and usrp but I tried to use two of them for the digital beacon receiver. So i tried to understand most of the block diagram in usrp and now i have detail of the usrp from many site. One is the USRP user's and Developer 's Guide(Matt Ettus) and The USRP under 1.5X Magnifyi

Re: [Discuss-gnuradio] Can't set center frequency of USRP2 w/DBSRX

2010-08-11 Thread Jason Abele
On Wed, Aug 11, 2010 at 11:37 AM, Moeller wrote: > Call "usrp2_probe" to check if the board ID is 13 now. If it is still 2, the > burning had no effect. Moeller has a very good tip here, we use different daughterboard id's to let the software know if the resistor modification has been performed.

Re: [Discuss-gnuradio] Can't set center frequency of USRP2 w/DBSRX

2010-08-11 Thread Marcus D. Leech
> > Call "usrp2_probe" to check if the board ID is 13 now. If it is still 2, the > burning had no effect. > I tried two times without success (didn't know that the ID would have to > change). > After another 3rd attempt later, I was successful. > Very strange. Every time I followed the instructio

Re: [Discuss-gnuradio] usrp usb problem with Mandriva 2010.1

2010-08-11 Thread ematlis
--- On Wed, 8/11/10, Thomas Tsou wrote: > From: Thomas Tsou > Subject: Re: [Discuss-gnuradio] usrp usb problem with Mandriva 2010.1 > To: emat...@yahoo.com > Cc: discuss-gnuradio@gnu.org > Date: Wednesday, August 11, 2010, 1:52 PM > On Wed, Aug 11, 2010 at 11:07 > AM,  > wrote: > > Hello- > > >

Re: [Discuss-gnuradio] GNU Radio & USRP help reveal Security and Privacy Vulnerabilities of In-Car Wireless Networks

2010-08-11 Thread Eric Blossom
On Wed, Aug 11, 2010 at 04:56:10PM +0200, Patrick Strasser wrote: > Hello! > > FYI: > Just found an article at a German computer news site (Golem)[1] > about a paper by Ishtiaq Rouf and Rob Miller from University of > South Carolina and Rutgers University about Security and Privacy > Vulnerabiliti

Re: [Discuss-gnuradio] Need Tx/Rx loopback test for USRP2 with a wbx daughter board

2010-08-11 Thread Rafael Diniz
I just plug the wbx to simple antennas, matched to the frequency you want to transmit/receive. And as Matt said, do not blow your board, don't connect tx to rx. > On 08/11/2010 10:55 AM, Mark Hemmerlein wrote: >> Hi >> >> >> I now have a USRP2 with a wbx daughter board up and working under Ubuntu

Re: [Discuss-gnuradio] How to ^2 or ^more for signal source from GRC

2010-08-11 Thread Eric Blossom
On Tue, Aug 10, 2010 at 10:06:29PM -0400, Tom Rondeau wrote: > 2010/8/10 Wipat phonsukkarn : > > Does anybody knows how to power(^) the signal from the signal source block > > or USRP source > > for example signal from signal source are coswt+jsinwt or Ae^(jwt) and i > > want to ^2 for the result =

Re: [Discuss-gnuradio] usrp usb problem with Mandriva 2010.1

2010-08-11 Thread Thomas Tsou
On Wed, Aug 11, 2010 at 11:07 AM, wrote: > Hello- > > I am having a usb/USRP issue under x86_64 Mandriva 2010.1 with gnuradio-3.3.0. > > I compiled and installed using the default procedure: > ./configure > make > sudo make install > > When I try to use usrp_fft.py, I get many errors (see below).

Re: [Discuss-gnuradio] Can't set center frequency of USRP2 w/DBSRX

2010-08-11 Thread Moeller
On 11.08.2010 15:49, spaceyaeon wrote: > Hello, > > I am having a similar problem as mentioned by Moeller in his message. I have > made the required modifications to be USRP2 + DBSRX. All I see is a noise > floor when I try usrp2_fft.py. I am inputting 2.165 GHz signal through RF > In. Is there s

[Discuss-gnuradio] usrp usb problem with Mandriva 2010.1

2010-08-11 Thread ematlis
Hello- I am having a usb/USRP issue under x86_64 Mandriva 2010.1 with gnuradio-3.3.0. I compiled and installed using the default procedure: ./configure make sudo make install When I try to use usrp_fft.py, I get many errors (see below). The gui pops up, but no data is displayed: [mat...@loc

Re: [Discuss-gnuradio] Need Tx/Rx loopback test for USRP2 with a wbx daughter board

2010-08-11 Thread Matt Ettus
On 08/11/2010 10:55 AM, Mark Hemmerlein wrote: Hi I now have a USRP2 with a wbx daughter board up and working under Ubuntu ( usrp2_fft.py ). I would like to perform a transmit / receive loopback test to verify transmit as well as receive. Is there a program or utitility which may perform this

[Discuss-gnuradio] Need Tx/Rx loopback test for USRP2 with a wbx daughter board

2010-08-11 Thread Mark Hemmerlein
Hi I now have a USRP2 with a wbx daughter board up and working under Ubuntu ( usrp2_fft.py ).  I would like to perform a transmit / receive loopback test to verify transmit as well as receive. Is there a program or utitility which may perform this function? gnuradio newbie mark __

Re: [Discuss-gnuradio] receive error at side-B

2010-08-11 Thread YouheiFujii
Did anyone have same error??? (2010/08/05 1:02), YouheiFujii wrote: > Hi all, > > Now I try to make full-duplex program on one USRP1 and 2 daughterboards. > (daughterboard is RFX400) > > I tested benchmark_tx/rx.py(in example/digital). > For example, I use these command. > -- > TX-PC $ sudo python

Re: [Discuss-gnuradio] GNU Radio & USRP help reveal Security and Privacy Vulnerabilities of In-Car Wireless Networks

2010-08-11 Thread Matthias Wilhelm
Hi, for the really scary part, check out this paper: Experimental Security Analysis of a Modern Automobile -- K. Koscher, A. Czeskis, F. Roesner, S. Patel, T. Kohno, S. Checkoway, D. McCoy, B. Kantor, D. Anderson, H. Shacham, S. Savage. The IEEE Symposium on Security and Privacy, Oakland, CA,

[Discuss-gnuradio] GNU Radio & USRP help reveal Security and Privacy Vulnerabilities of In-Car Wireless Networks

2010-08-11 Thread Patrick Strasser
Hello! FYI: Just found an article at a German computer news site (Golem)[1] about a paper by Ishtiaq Rouf and Rob Miller from University of South Carolina and Rutgers University about Security and Privacy Vulnerabilities of In-Car Wireless Networks[2]. They used GNU Radio and USRP to record th

[Discuss-gnuradio] Suggested reading order

2010-08-11 Thread Jim
Hi,: I'm a newbie to GNURadio/USRP, I have checked the suggested reading at http://gnuradio.org/redmine/wiki/gnuradio/SuggestedReading, but there're a lot of material there, it would probably take a year to go through all sections even if I just read one book from each section. I wonder if ev

Re: [Discuss-gnuradio] DQPSK bug or incorrect settings?

2010-08-11 Thread ikjtel
--- On Wed, 8/11/10, Tom Rondeau wrote: > If you are using more than 2 samples > per symbol, > you are oversampling. That is, you are wasting your radio's > time and > power processing more samples than is required. The That wasn't the point - the specific question concerned the required amount

Re: [Discuss-gnuradio] DQPSK bug or incorrect settings?

2010-08-11 Thread Tom Rondeau
On Mon, Aug 9, 2010 at 8:46 AM, Bob McGwier wrote: > I think Tom has finished and checked in the PFB based clock recovery based > on the work by fred harris last summer-ish. Am I right?  If not, if I may be > off assistance in finishing, I will. > > Bob Yes, the PFB clock recovery and the PFB res

Re: [Discuss-gnuradio] DQPSK bug or incorrect settings?

2010-08-11 Thread Tom Rondeau
On Wed, Aug 11, 2010 at 9:49 AM, ikjtel wrote: >> In a word, NEVER. No self respecting communication systems designer would >> allow >> that much excess bandwidth on the air or any realistic transmission medium. > > To me this doesn't make sense.  The spectral bandwidth required is never a > fun

Re: [Discuss-gnuradio] Can't set center frequency of USRP2 w/DBSRX

2010-08-11 Thread spaceyaeon
Hello, I am having a similar problem as mentioned by Moeller in his message. I have made the required modifications to be USRP2 + DBSRX. All I see is a noise floor when I try usrp2_fft.py. I am inputting 2.165 GHz signal through RF In. Is there something that I am doing wrong? Do I need external

Re: [Discuss-gnuradio] DQPSK bug or incorrect settings?

2010-08-11 Thread ikjtel
> In a word, NEVER. No self respecting communication systems designer would > allow > that much excess bandwidth on the air or any realistic transmission medium. To me this doesn't make sense. The spectral bandwidth required is never a function of the samples per symbol (SPS); it's a function

[Discuss-gnuradio] Vector Sources?

2010-08-11 Thread Scott Johnston
When running a flow graph with vector sources that are reading a variable, does the vector source get updated when the variable does? Or is there some other way of accomplishing this? Thanks for any help Scott Johnston ___ Discuss-gnuradio mailing l