[Discuss-gnuradio] tvrx nbfm receive
hey people, if anyone is interested, the code for a nbfm receiver using the tvrx daughterboard is available for tearing apart. http://m0mik.org/gnuradio/ mike - m0mik ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] rf to data file - usrp_rx_file.py
nice one, thanks. i'll have another play. mj On Wed, 23 Mar 2005 09:26:23 -0800, Matt Ettus [EMAIL PROTECTED] wrote: I have been trying to find a way to use usrp_rx_file.py to grab a certain bandwidth and sample rate from my usrp and save it into a file. By moving the decimation value to max i can't get the bandwidth down to 12.5khz. The USRP hardware will only decimate by up to 128 at this time. That will give you 500 ks/s complex and 500 khz of BW. In software you should then pass the signal through a decimating FIR filter to get it down to the width you'd like. Nearly all of them examples show how to use one of these filters. How could I add a bandpass filter to usrp_rx_file.py? Is this even the right way to go? Yes Also, is it possible to transmit the captured rf from the file at a later date? Just reverse the process you used to receive it. Matt ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] Looking for signals
hey, i'm in the UK and can supply a slice too. is there any chance you could send me the python script to do it? i've tried playing about with the decim value in usrp_rx_file.py with no luck on getting a 100KHz chunk. cheers, mj On Fri, 18 Mar 2005 09:39:00 -0700 (MST), [EMAIL PROTECTED] [EMAIL PROTECTED] wrote: 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 30 seconds or so. I figure 8 bit samples, at 250 ksps, for 30 secs - about 7.5 Mbytes. What I'd like is a cut, very similar to the one RFSpace shows at, http://www.rfspace.com/images/20_meter_cw.gif This is a great demo picture, given that it shows a diverse set of signals all at the same time. My only problem is, I'd like to tinker with how it was generated, the spectral analysis method, the colors in the display, etc. and to do that I need a real signal. Any takers? Thanks! Dan ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] /dev/parport0: No such device or address
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 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: found usrp rev2 /dev/parport0: No such device or address terminate called after throwing an instance of 'std::runtime_error' what(): open Aborted thanks. also... '31.3e6' is Radio2 here in the UK on 89.8MHz. Is there an easy way to convert ddc into the actual freq? Comment out the part near 'connect to rf front end' that's trying to talk to a gr.microtune_4937_eval_board () thru the parallel board. Change to: IF_Freq = freq1 instead of 5.75e6 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. --Chuck = mj - m0mik hotstudent.com [are you hot enough?!] __ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
[Discuss-gnuradio] AttributeError: 'module' object has no attribute 'PyEventBinder'
hi guys, the non wxpython scripts run fine, but running usrp_oscope.py and usrp_fft.py gives these errors: usrp: found usrp rev2 Traceback (most recent call last): File ./usrp_oscope.py, line 26, in ? from gnuradio.wxgui import stdgui, fftsink, scopesink File /usr/local/lib/python2.3/site-packages/gnuradio/wxgui/fftsink.py, line 89, in ? EVT_DATA_EVENT = wx.PyEventBinder (myDATA_EVENT, 0) AttributeError: 'module' object has no attribute 'PyEventBinder' any ideas? i've looked everywhere and have even upgraded to gcc-3.4.3 and re-compiled everything. cheers, = mj - m0mik hotstudent.com [are you hot enough?! __ Do you Yahoo!? Yahoo! Mail - Find what you need with new enhanced search. http://info.mail.yahoo.com/mail_250 ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
