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177 lines
5.0 KiB
Groff
177 lines
5.0 KiB
Groff
.TH rtl_power: "1" "0.5.1" RTL_SDR "User Commands"
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.SH NAME
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rtl_power: \- wideband spectrum monitor utility
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.SH DESCRIPTION
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Uses a re-purposed DVB-T receiver as a software defined
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radio to receive signals in I/Q data form. Written for
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and incorporated in the osmocom rtl-sdr project.
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.SH USAGE
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rtl_power, a simple FFT logger for RTL2832 based DVB\-T receivers
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.PP
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This tool gathers signal data over a very wide area of the frequency spectrum,
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and then that data can be used to find active areas of the spectrum.
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.PP
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Use: rtl_power \fB\-f\fR freq_range [\-options] [filename]
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.HP
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\fB\-f\fR lower:upper:bin_size [Hz]
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.IP
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(bin size is a maximum, smaller more convenient bins
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.TP
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will be used.
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valid range 1Hz \- 2.8MHz)
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.IP
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[\-i integration_interval (default: 10 seconds)]
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.IP
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(buggy if a full sweep takes longer than the interval)
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.IP
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[\-1 enables single\-shot mode (default: off)]
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[\-e exit_timer (default: off/0)]
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[\-d device_index (default: 0)]
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[\-g tuner_gain (default: automatic)]
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[\-p ppm_error (default: 0)]
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filename (a '\-' dumps samples to stdout)
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.IP
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(omitting the filename also uses stdout)
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.SS "Experimental options:"
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.IP
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[\-w window (default: rectangle)]
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.IP
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(hamming, blackman, blackman\-harris, hann\-poisson, bartlett, youssef)
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.IP
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[\-c crop_percent (default: 0%, recommended: 20%\-50%)]
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.IP
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(discards data at the edges, 100% discards everything)
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(has no effect for bins larger than 1MHz)
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.IP
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[\-F fir_size (default: disabled)]
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.IP
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(enables low\-leakage downsample filter,
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.TP
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fir_size can be 0 or 9.
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0 has bad roll off,
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.IP
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try with '\-c 50%')
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.IP
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[\-P enables peak hold (default: off)]
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[\-D enable direct sampling (default: off)]
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[\-O enable offset tuning (default: off)]
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.SS "CSV FFT output columns:"
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.IP
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date, time, Hz low, Hz high, Hz step, samples, dbm, dbm, ...
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.SH EXAMPLES
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.IP
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rtl_power \fB\-f\fR 88M:108M:125k fm_stations.csv
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.IP
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(creates 160 bins across the FM band,
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.IP
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individual stations should be visible)
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.IP
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rtl_power \fB\-f\fR 100M:1G:1M \fB\-i\fR 5m \fB\-1\fR survey.csv
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.IP
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(a five minute low res scan of nearly everything)
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.IP
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rtl_power \fB\-f\fR ... \fB\-i\fR 15m \fB\-1\fR log.csv
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.IP
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(integrate for 15 minutes and exit afterwards)
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.IP
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rtl_power \fB\-f\fR ... \fB\-e\fR 1h | gzip > log.csv.gz
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.IP
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(collect data for one hour and compress it on the fly)
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.SS "Convert CSV to a waterfall graphic with:"
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.IP
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http://kmkeen.com/tmp/heatmap.py.txt
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.PP
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rtl_power, a simple FFT logger for RTL2832 based DVB\-T receivers
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.PP
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Use: rtl_power \fB\-f\fR freq_range [\-options] [filename]
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.HP
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\fB\-f\fR lower:upper:bin_size [Hz]
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.IP
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(bin size is a maximum, smaller more convenient bins
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.TP
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will be used.
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valid range 1Hz \- 2.8MHz)
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.IP
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[\-i integration_interval (default: 10 seconds)]
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.IP
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(buggy if a full sweep takes longer than the interval)
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.IP
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[\-1 enables single\-shot mode (default: off)]
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[\-e exit_timer (default: off/0)]
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[\-d device_index (default: 0)]
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[\-g tuner_gain (default: automatic)]
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[\-p ppm_error (default: 0)]
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filename (a '\-' dumps samples to stdout)
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.IP
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(omitting the filename also uses stdout)
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.SS "Experimental options:"
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.IP
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[\-w window (default: rectangle)]
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.IP
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(hamming, blackman, blackman\-harris, hann\-poisson, bartlett, youssef)
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.IP
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[\-c crop_percent (default: 0%, recommended: 20%\-50%)]
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.IP
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(discards data at the edges, 100% discards everything)
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(has no effect for bins larger than 1MHz)
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.IP
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[\-F fir_size (default: disabled)]
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.IP
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(enables low\-leakage downsample filter,
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.TP
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fir_size can be 0 or 9.
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0 has bad roll off,
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.IP
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try with '\-c 50%')
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.IP
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[\-P enables peak hold (default: off)]
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[\-D enable direct sampling (default: off)]
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[\-O enable offset tuning (default: off)]
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.SS "CSV FFT output columns:"
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.IP
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date, time, Hz low, Hz high, Hz step, samples, dbm, dbm, ...
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.IP
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rtl_power \fB\-f\fR 88M:108M:125k fm_stations.csv
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.IP
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(creates 160 bins across the FM band,
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.IP
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individual stations should be visible)
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.IP
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rtl_power \fB\-f\fR 100M:1G:1M \fB\-i\fR 5m \fB\-1\fR survey.csv
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.IP
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(a five minute low res scan of nearly everything)
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.IP
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rtl_power \fB\-f\fR ... \fB\-i\fR 15m \fB\-1\fR log.csv
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.IP
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(integrate for 15 minutes and exit afterwards)
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.IP
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rtl_power \fB\-f\fR ... \fB\-e\fR 1h | gzip > log.csv.gz
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.IP
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(collect data for one hour and compress it on the fly)
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.SS "Convert CSV to a waterfall graphic with:"
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.IP
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http://kmkeen.com/tmp/heatmap.py.txt
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.SH "SEE ALSO"
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.LP
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RTL-SDR wiki documentation:
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.B http://sdr.osmocom.org/trac/wiki/rtl-sdr
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.LP
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Other rtl-sdr programs:
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.sp
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rtl_adsb(1), rtl_eeprom(1), rtl_fm(1), rtl_sdr(1), rtl_tcp(1), rtl_test(1)
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.SH AUTHOR
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This manual page was written by Maitland Bottoms
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for the Debian project (but may be used by others).
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.SH COPYRIGHT
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Copyright (c) 2013 A. Maitland Bottoms <bottoms@debian.org>
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.LP
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 2 of the License, or
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(at your option) any later version.
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.LP
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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