Re: [Discuss-gnuradio] problem with audio extraction in NTSC

2005-02-16 Thread Eric Blossom
On Wed, Feb 16, 2005 at 09:11:36PM -0600, David Carr wrote: > Matt, > > >Yes, very true. It's not even the FFT part. That is really quick. Its > >the > >drawing of the graph. If anybody is interested, I think integrating > >PGPlot > >would help this issue a lot. It is supposed to be much fa

Re: [Discuss-gnuradio] problem with audio extraction in NTSC

2005-02-16 Thread David Carr
Matt, Yes, very true. It's not even the FFT part. That is really quick. Its the drawing of the graph. If anybody is interested, I think integrating PGPlot would help this issue a lot. It is supposed to be much faster than wxPyPlot. I just downloaded and installed PGPlot. The native interfa

Re: [Discuss-gnuradio] LED blinking

2005-02-16 Thread Pat Crean
Is it just me, or does anybody else think it would be a fine idea to drop an in-line fuse into the power line along with bypassing the soldered down fuse? Just in case there's actually a short somewhere in the board that we really don't want to expose catastrophically. On Wed, 2005-02-16 at

Re: [Discuss-gnuradio] LED blinking

2005-02-16 Thread Matt Ettus
> Can I use any wire, or is there a specific gauge, etc., that I need to > look for? Any wire that can handle 3 amps. ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio

Re: [Discuss-gnuradio] LED blinking

2005-02-16 Thread Rahul Dhar
On Wed, Feb 16, 2005 at 12:57:17PM -0800, Matt Ettus wrote: > Quoting Rahul Dhar <[EMAIL PROTECTED]>: >> >> The ohm meter says that nothing is going through the fuse. Is there a >> special dance I can do to resurrect this thing? > > > You must have shorted something. If you are certain you have

[Discuss-gnuradio] fsk mod-demod

2005-02-16 Thread Bob Vincent
I've been working with fsk_tx and fsk_rx between a pair of usrp boards. I've noticed that the fsk_tx has widely different behavior for different settings. On the nominal rx board, I run the fft display, expecting to see the same fft as in the tx window. What I see instead is pretty much noise. Wh

Re: [Discuss-gnuradio] LED blinking

2005-02-16 Thread Matt Ettus
Quoting Rahul Dhar <[EMAIL PROTECTED]>: > On Tue, Feb 15, 2005 at 06:18:57PM -0800, Eric Blossom wrote: > > > > Pull out your trusty ohm meter and with the board unplugged from the > > power supply, check continuity across the fuse F501. If you start at > > the power connector and follow the trac

Re: [Discuss-gnuradio] LED blinking

2005-02-16 Thread Eric Blossom
On Wed, Feb 16, 2005 at 03:42:00PM -0500, Rahul Dhar wrote: > On Tue, Feb 15, 2005 at 06:18:57PM -0800, Eric Blossom wrote: > > > > Pull out your trusty ohm meter and with the board unplugged from the > > power supply, check continuity across the fuse F501. If you start at > > the power connector

Re: [Discuss-gnuradio] Re: usrp wfm problem

2005-02-16 Thread mj
> It would be useful to have a function that returned > the as-aliased > frequency for > any given input frequency (up to the maximum input > frequency of the A/D). > Trivial, I suppose, but less opportunity for brain > farts that way. > i tried with python but i'm better with php :) here'

Re: [Discuss-gnuradio] LED blinking

2005-02-16 Thread Rahul Dhar
On Tue, Feb 15, 2005 at 06:18:57PM -0800, Eric Blossom wrote: > > Pull out your trusty ohm meter and with the board unplugged from the > power supply, check continuity across the fuse F501. If you start at > the power connector and follow the trace on the top, it's the first > thing you run into.

[Discuss-gnuradio] Scope and Spectrum Analyzer using WCK

2005-02-16 Thread Thomas Traber
Matt, > Yes, very true. It's not even the FFT part. That is really quick. Its the > drawing of the graph. If anybody is interested, I think integrating PGPlot > would help this issue a lot. It is supposed to be much faster than wxPyPlot. Because I like Tkinter more than wxPython I am playing

Re: [Discuss-gnuradio] Re: usrp wfm problem

2005-02-16 Thread Matt Ettus
Quoting Marcus Leech <[EMAIL PROTECTED]>: > It would be useful to have a function that returned the as-aliased > frequency for > any given input frequency (up to the maximum input frequency of the A/D). > Trivial, I suppose, but less opportunity for brain farts that way. A good idea. Anyway

Re: [Discuss-gnuradio] problem with audio extraction in NTSC

2005-02-16 Thread Matt Ettus
Quoting Achilleas Anastasopoulos <[EMAIL PROTECTED]>: > > I deactivated the three fftscopes that I had and now > it works fine. The voice distortion was because the CPU > could not handle the load. It is amazing how much CPU > power the fftscopes consume... > Yes, very true. It's not even the FF

Re: [Discuss-gnuradio] Re: usrp wfm problem

2005-02-16 Thread Marcus Leech
It would be useful to have a function that returned the as-aliased frequency for any given input frequency (up to the maximum input frequency of the A/D). Trivial, I suppose, but less opportunity for brain farts that way. Matt Ettus wrote: Quoting mj <[EMAIL PROTECTED]>: Am i missing somethi

Re: [Discuss-gnuradio] problem with audio extraction in NTSC

2005-02-16 Thread Achilleas Anastasopoulos
I deactivated the three fftscopes that I had and now it works fine. The voice distortion was because the CPU could not handle the load. It is amazing how much CPU power the fftscopes consume... Thanks for the help Achilleas Eric Blossom wrote: On Tue, Feb 15, 2005 at 07:59:45PM -0500, Achilleas Ana

Re: [Discuss-gnuradio] Re: usrp wfm problem

2005-02-16 Thread Matt Ettus
Quoting mj <[EMAIL PROTECTED]>: > > Am i missing something obvious? > > > > Fixed it. the "freq1 = blah * 1e6" evaded me. > > Still not sure on how to receive 433Mhz if anyone > knows. As RF frequency rises from 0 to 32 MHz, the "digital" frequency goes from 0 to 32 MHz. As RF frequency goes fr

[Discuss-gnuradio] usrp wfm problem

2005-02-16 Thread mj
> >also... '31.3e6' is Radio2 here in the UK on > 89.8MHz. > >Is there an easy way to convert ddc into the actual > >freq? > > > The freq is tuned to 5.75Mhz, so you might be > getting > > 89.8 - 64 + 5.75 = 31.55 ? > > 64 Mhz is the usrp sample freq. 5.75 is the IF freq > the script tunes to.

[Discuss-gnuradio] Re: usrp wfm problem

2005-02-16 Thread mj
> Am i missing something obvious? > Fixed it. the "freq1 = blah * 1e6" evaded me. Still not sure on how to receive 433Mhz if anyone knows. thanks. > Also, the max ddc for usrp_fft.py is 32e6 so i'm > assuming the maximum usrp rf frequency is 32Mhz??? > and > the Radio2 wfm reception i'm receiv

Re: [Discuss-gnuradio] /dev/parport0: No such device or address

2005-02-16 Thread mj
thanks chuck. all sorted now. mj --- Chuck Swiger <[EMAIL PROTECTED]> wrote: > At 01:57 AM 2/16/2005 -0800, you wrote: > >Hey, can anyone shed some light on this? I can do > air > >captures to file and then listen to them, but I > cannot > >listen to the signal live. The first time I tried > it

[Discuss-gnuradio] /dev/parport0: No such device or address

2005-02-16 Thread mj
Hey, can anyone shed some light on this? I can do air captures to file and then listen to them, but I cannot listen to the signal live. The first time I tried it I followed the instructions in the error about making a /dev/parport0 to no effect. ./wfm_rcv.py 31.3e6 audio: using audio_alsa usrp: fo