Forum: GNU Radio AM modulated signal

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137d870cfd1601c1e5b03cf51e41dbe0?d=identicon&s=25 abrar muhammad (Guest)
on 2009-02-04 02:58
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Attachment: Abrar3.py (3 KB)
Hi
when I applied AM modulated signal to USRP from Signal Generator.
I can not getting the same modulating frequency.
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
745d8202ef5a58c1058d0e5395a78f9c?d=identicon&s=25 Eric Blossom (Guest)
on 2009-02-04 03:03
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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?
137d870cfd1601c1e5b03cf51e41dbe0?d=identicon&s=25 abrar muhammad (Guest)
on 2009-02-04 03:13
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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.
137d870cfd1601c1e5b03cf51e41dbe0?d=identicon&s=25 abrar muhammad (Guest)
on 2009-02-04 21:56
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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.
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