Re: [Discuss-gnuradio] 8MHz Tx Bandwidth.. Nightmare and Fear

2007-09-07 Thread Firas abbas
Hi vincenzo, No need to be confused , lets put it together again: 1) The USB benchmark software can be found in the gnuradio/gnuradio-examples/python/usrp/benchmark_usb.py 2) What do you mean by another disk? are both gnuradrio installation work from the same operating system ? or each drive

Re: [Discuss-gnuradio] 8MHz Tx Bandwidth.. Nightmare and Fear

2007-09-07 Thread Vincenzo Pellegrini
I'm recording and replaying interleaved shorts @ 8Msps.. how is the benchmarking software called? I also have noticed a diffference between my main, old gnuradio installation and a fresh one just done from trunk on another disk... the fisrt is all right with transmissions up to 4 MHz the second

Re: [Discuss-gnuradio] 8MHz Tx Bandwidth.. Nightmare and Fear

2007-09-05 Thread Vincenzo Pellegrini
I've just checked, at 4 MHz I can not only tune the central station of my fm band, really I can perfectly tune all them, all the stations in the snaphotted band, even at he extremes, the CIC roll off reall gives me no problem at this stage.. with 8 MHz all this good stuff is simply ..gone

Re: [Discuss-gnuradio] 8MHz Tx Bandwidth.. Nightmare and Fear

2007-09-05 Thread Matt Ettus
Vincenzo Pellegrini wrote: I've just checked, at 4 MHz I can not only tune the central station of my fm band, really I can perfectly tune all them, all the stations in the snaphotted band, even at he extremes, the CIC roll off reall gives me no problem at this stage.. with 8 MHz all this

Re: [Discuss-gnuradio] 8MHz Tx Bandwidth.. Nightmare and Fear

2007-09-05 Thread Vincenzo Pellegrini
really I was expecting them but I cannot see them, they should be in the terminal right? like uO when receiving and uU when transming right? I cannot see these ones thanks On Wed, 2007-09-05 at 16:35 -0700, Matt Ettus wrote: Vincenzo Pellegrini wrote: I've just checked, at 4 MHz I can not

Re: [Discuss-gnuradio] 8MHz Tx Bandwidth.. Nightmare and Fear

2007-09-04 Thread Matt Ettus
Vincenzo Pellegrini wrote: Matt, ...but please say it loud, say it clear: vincenzo, you've made very big mistakes, because the USRP really can transmit an 8MHz wide signal without distorting it significantly, I've tested it... I really don't know what you're looking for here. There are a

[Discuss-gnuradio] 8MHz Tx Bandwidth.. Nightmare and Fear

2007-09-03 Thread Vincenzo Pellegrini
Matt, Tonight I have been recording slices of commercial FM spectrum, all centered right where a good station transmits, the first slice was 300Khz wide, the second was 2MHz the third was 4MHz then I sent all these signals to my Hifi FM receiver via the basicTX... all went fine and I could

Re: [Discuss-gnuradio] 8MHz Tx Bandwidth.. Nightmare and Fear

2007-09-03 Thread Eng. Firas
Hi Vincenzo, 1) What is your recording system (PC specifications)?. 2) How fast your hard drive can read/write data? because working with 8MHz means that your hard drive must be able to sustain writing 32MByte/sec? 3) Do you use ext2 or ext3 ? Ext2 is very efficient in writing. 4) Are you