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Diffstat (limited to 'gr-pager/README')
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diff --git a/gr-pager/README b/gr-pager/README deleted file mode 100644 index 441fee0b4..000000000 --- a/gr-pager/README +++ /dev/null @@ -1,85 +0,0 @@ -This GNU Radio component implements a FLEX radiopager receiver/demodulator. - -FLEX pager towers are between 929 MHz and 932 MHz at 25 KHz centers. - -Current status (7/16/07): - -FLEX receiving is completed except for addition of BCH error correction. - -There are three scripts: - -usrp_flex.py - Receives and displays pages from a single paging channel. To - work from recorded data, record from USRP with decimation 256 - at center frequency. - - Usage: usrp_flex.py [options] - - Options: - -h, --help show this help message and exit - -f Hz, --frequency=Hz set receive frequency to Hz - -R SUBDEV, --rx-subdev-spec=SUBDEV select USRP Rx side A or B - -c Hz, --calibration=Hz set frequency offset to Hz - -g dB, --gain=dB set RF gain - -l, --log log flowgraph to files (LOTS of data) - -v, --verbose display debug output - -F FROM_FILE, --from-file=FROM_FILE read samples from file instead of USRP - - Example, to receive from 931.95M (a common nationwide channel) with DBSRX in - side A of USRP: - - $ usrp_flex.py -f 931.95M -g 32 -R A - - -usrp_flex_band.py - Receives and displays pages from a 1 MHz paging band (40 pager - channels.) To work from recorded data, record from USRP with - decimation 64 at center frequency. - -Usage: usrp_flex_band.py [options] - - Options: - -h, --help show this help message and exit - -f Hz, --frequency=Hz set receive center frequency to Hz - -R SUBDEV, --rx-subdev-spec=SUBDEV select USRP Rx side A or B - -c Hz, --calibration=Hz set frequency offset to Hz - -g dB, --gain=dB set RF gain - -F FROM_FILE, --from-file=FROM_FILE Read from file instead of USRP - -l, --log log flowgraph to files (LOTS of data) - -v, --verbose display debug output - - Example, to receive from the lower third of the pager band with DBSRX in side B - of USRP: - - $ usrp_flex_band.py -f 929.5M -g 32 -R B - -usrp_flex_all.py - Receives and displays pages from entire pager band (3 MHz, - 120 pager channels.) This does not work in real time due - to CPU limitations, but can work from recorded USRP data. To - work from recorded data, record from USRP with decimation 20 at - center frequency of 930.5M. - - Usage: usrp_flex_all.py [options] - - Options: - -h, --help show this help message and exit - -R SUBDEV, --rx-subdev-spec=SUBDEVC select USRP Rx side A or B - -c Hz, --calibration=Hz set frequency offset to Hz - -g dB, --gain=dB set RF gain - -F FROM_FILE, --from-file=FROM_FILE Read from file instead of USRP - -l, --log log flowgraph to files (LOTS of data) - -v, --verbose display debug output - - Example, to receive all pager channels with DBSRX in side A: - - $ usrp_flex_all.py -R A - -The demodulator is relatively sensitive to frequency offset and can capture a signal -within 3k of the actual signal. - -All three scripts take a 'calibration' parameter, which specifies the frequency offset -of the daughterboard. This causes the USRP to be tuned to the given center frequency -plus the calibration offset. For example, if your DBSRX shows 930MHz as 930.001MHz in -usrp_fft.py, then use '-c 1k' in the command line to automatically add this. - -Johnathan Corgan -Corgan Enterprises LLC -jcorgan@corganenterprises.com |