[Discuss-gnuradio] Receiving 900MHz signal on USRP1

Hi
I am new to gnuradio. I have done installation of uhd and gnuradio form buildgnuradio script successfully. Now I want to receive 900MHz signal from USRP1. when i run uhd_fft.. it does not give any significant result. and when i run  usrp_wfm_rcv_pll.py it does not receive any signal

Its terminal output is:


usama@usama-Inspiron-N5110:~$ cd ..
usama@usama-Inspiron-N5110:/home$ cd ..
usama@usama-Inspiron-N5110:/$ cd usr/local/share/gnuradio/examples/uhd
usama@usama-Inspiron-N5110:/usr/local/share/gnuradio/examples/uhd$ sudo python usrp_wfm_rcv_pll.py -f 900M
[sudo] password for usama:
linux; GNU C++ version 4.6.3; Boost_104800; UHD_003.007.000-123-g87b068ed

-- Opening a USRP1 device...
-- Using FPGA clock rate of 64.000000MHz...
Using Volk machine: avx_32_mmx_orc
FYI: This implementation of the stereo_carrier_pll_recovery has no squelch implementation yet
FYI: No Powermate or Contour Knob found
Radio does not support required frequency range.