[Discuss-gnuradio] about benchmark_rx

2008-12-30 Thread chenchen chen
hi,evryone i am troubled with running usrp demo. i believe i have configured my ursp correctly because there is data displayed while running usrp_spectrumsense.py. however, when i tried benchmark_rx and benchmark_tx on two computers, i got nothing to indicate that the device was recieving on the

Re: [Discuss-gnuradio] Marvell Yukon 88E8039 PCI-E Ethernet - USRP2

2008-12-30 Thread Daniel O'Connor
On Wednesday 31 December 2008 02:37:37 Eric Blossom wrote: > Google tells me that the Marvell Yukon 88E8039 PCI-E Ethernet > controller is a "Fast Ethernet" card; that is 100Mbit, not 1000Mbit. > > The USRP2 requires gigabit ethernet. The 'msk' man page in FreeBSD says it's GigE. Maybe it's not n

[Discuss-gnuradio] Info on Ciao Radio

2008-12-30 Thread Franco Spinelli
There is someone using Gnu Radio software with Ciao Radio, an Italian SDR (see: http://www.comsistel.com/Ciao%20Radio.htm) for HF rx. Software for this SDR is Windows only and I will use it on my Linux box. On Users Group for this SDR there is no Linux users. On same Users Group there is a descr

[Discuss-gnuradio] Tuning issues with DBS RX at 900MHz

2008-12-30 Thread OB Lutz
Hey all I've got a USRP with a DBS RX that I'm trying to tune to an NTSC signal centered at 909MHz, 6MHz wide (confirmed on a spectrum analyzer). In order to get a usable signal out of the usrp for this, I have to turn down to 905MHz, which is outside of where the source is broadcasting (analyzer

Re: [Discuss-gnuradio] Marvell Yukon 88E8039 PCI-E Ethernet - USRP2

2008-12-30 Thread Eric Blossom
On Tue, Dec 30, 2008 at 07:36:41AM +0100, Changkyu Seol wrote: > > Hi > > I recently installed fedora 9 and GNU radio on laptop computer (COMPAQ > Presario V3700, Marvell Yukon 88E8039 PCI-E Ethernet) but USRP2 is not > recognized. (Running "find_usrp" keeps printing "No USRP2 found.") I > have b

Re: [Discuss-gnuradio] Some usrp_spectrum_sense.py code Explanation

2008-12-30 Thread Firas Abbas
Hi, > --- On Tue, 12/30/08, Ling Huang wrote: > Hi, Firas > In my opinion the ouput Y[i] has the same dimension with > the power. If we square root the output, and divide it with the fft bin > numbers, then we get the voltage magnitude. Am I right? > > Best Regards, > Ling Yes, If we square r

Re: [Discuss-gnuradio] Some usrp_spectrum_sense.py code Explanation

2008-12-30 Thread Ling Huang
Interrupting Output Spectrum - The actual mapping from the levels at the daughterboard antenna input port to the output analysis values depends on a lot of factors including the used daughterboard RF gain and decimation specific gain in the digital down converter. You