Question - FM receiver sample - AtttributeError

[noroi]

Hi all,

   I got some problems while running the FM receiver's example codes from
the GNURadio tutorial page; the RF front end is set to call the signal input
from daughter board, and when the compiler tried to call mothods to set some
parameter values(such as gain, set_AGC() and If frequency, get_output_freq()
), it seems not able to find those methods/ functions... Could someone be
kind enough to give some pointers for solving such errors?


Traceback (most recent call last):
  
  File "./nuradio.py", line 91, in __init__
    IF_freq = rf_front_end.get_output_freq () # 5.75e6
  File "/usr/local/lib/python2.4/site-packages/gnuradio/usrp.py", line 181,
in __getattr__
    return getattr(self._u, name)
AttributeError: 'usrp1_source_c_sptr' object has no attribute
'get_output_freq'

ps. link for the full script is as below:
http://www.gnu.org/software/gnuradio/doc/exploring-gnuradio.html#fm-receiver

Thanks,
 
eric
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