Failed to set frequency in usrp_fft.py

GNU Radio
1

Hello,

I have the USRP-1, RFX900, with the newest gnuradio-3.3.0 setup on a
Ubuntu
10 64bit system. The problem is that when I try to run the usrp_fft.py
example, it failes to set the center frequecy. I have tried frequencies
in
the range from 800MHz to 1GHz, with the same result: “Failed to set the
frequency”.
Any help would be appreciated.

Thanks,
–Panteley

2

Hi,

I’ve tried setting the frequency in different formats, i.e. 800M,
800000000,
etc., but to no avail.
Any other suggestions?

–Panteley

2010/7/27 Michael Chien-Chun H. [email protected]

3

Hi,

Yes, I tried both ways, passing the frequency range as a parameter and
inputting it in the GUI.

2010/7/27 Michael Chien-Chun H. [email protected]

4

On 07/28/2010 01:10 PM, Panteley P. wrote:

Hi,

Yes, I tried both ways, passing the frequency range as a parameter and
inputting it in the GUI.
I vaguely recall that RFX900 and RFX1800 are essentially the same board,
with only a very small
modification. I wonder if you accidentally got shipped an 1800.

Could you try tuning in the range for an RFX1800 and let us know?

–
Marcus L.
Principal Investigator
Shirleys Bay Radio Astronomy Consortium

5

For anyone who had this problem, the solution I found was specifying
which
daughterboard to use, with the “-R” option, and connecting the antenna
to
the RX, rather than the TX/RX antenna input. Hopes this helps someone.
2010/7/28 Panteley P. [email protected]