Re:[Discuss-gnuradio] AM modulated signal

[abrar muhammad]

I have tried the usrp_fft.py.
it works on frequency only between 1.5G to 2.0 G.
otherwise shows failed:
what its means.




> From: abrar muhammad <address@hidden>
> Date: 2009/2/4
> Subject: Re: [Discuss-gnuradio] AM modulated signal
> To: Eric Blossom <address@hidden>
> Cc: address@hidden
> 
> 
> 
> 
> Hi
> As I am getting only real one in time domain.
> the wave form shows modulating frequency of about 5 KHz.
> and when i Just applied carrier of 900 MHz  it gives the
> wave form of about
> 71 KHz.
> 
> 
> --- On Tue, 2/3/09, Eric Blossom <address@hidden>
> wrote:
> 
> > From: Eric Blossom <address@hidden>
> > Subject: Re: [Discuss-gnuradio] AM modulated signal
> > To: "abrar muhammad"
> <address@hidden>
> > Cc: address@hidden
> > Date: Tuesday, February 3, 2009, 7:58 PM
> > On Tue, Feb 03, 2009 at 05:57:47PM -0800, abrar
> muhammad
> > wrote:
> > >
> > > Hi
> > > when I applied AM modulated signal to USRP from
> Signal
> > Generator.
> > > I can not getting the same modulating frequency.
> >
> > What are you getting?
> >
> > Have you tried looking at the signal using
> usrp_fft.py?
> >
> > > Parameters are as.
> > > RF Frequency = 900 MHz
> > > Modulation Frequency=80KHz
> > > Modulatio Rate=50%
> > > I am using DBRX daughterboard:
> > > The code is attached.
> > > can any body check this code.
> > > Thanks
> 
> 
> 
> 
> 
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> 
> 
> -- 
> Engr. Muhammad Abrar
> Massey University Palmerston North
> NewZealand
> Mob: 0064211204202
> Res: 006463586340