I am trying to capture a few seconds of over the air HDTV on a file and
decode using the files in gr-atsc module according to the instructions
the README at gr-atsc/src/python. I am using the following command to
capture the signals off the air: /usrp_rx_cfile.py -R B -d 10 -f 587M -g
test_file, where 587MHz is the center of the 584-590 MHZ UHF band. I can
successfully capture about 20 seconds of data without any overruns.
set up the pipes and start the equalizer, it is unable to find field
At some gain settings it initially detects field sync but loses it later
Am I lacking enough gain/sensitivity in the front-end of the TV_RX? If
would an lna at the antenna help? Or could I be doing something else
prevents the equalizer to find field sync? I believe a number of folks
have decoded over the air hdtv signals using the TV_RX and USRP. Any
suggestions and help appreciated.