|Subject:||[Discuss-gnuradio] gr-atsc related question|
|Date:||Fri, 14 Sep 2012 17:41:14 -0400|
I am new to gnu radio/usrp. I am trying out digitial
TV application gr-atsc. I have a USRP N210 with a
basic omnidirectional antenna.
I checked local digital TV stations and found (from Internet) that
there is one at 603.25 MHz (UHF channel 36) and the station is
listed to be about 14 miles from here. When I run
uhd_fft to receive the channel, I do not see any signal.
I used a hardware oscilloscope to scan the UHF band, but could
not find signal anywhere. Could it be because I do not have a
good antenna (I have only basic omnidirectional antenna which
looks like a 0.75 foot rod; sorry I do not have much communication
Now, even without any TV signal, should the gr-atsc application
Work? It is ok if it shows me a black screen from the mpeg file.
But when I run the five python scripts (interp_short.py, xlate.py etc.),
The mpeg file generated is of zero size. So I modified the python scripts
to write to file (instead of fifo). What I found was that after runnin
“btl-fsd-py”, its output file is of size zero (other scripts before it generate
file of huge size). What is the problem here?
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