This is the command rtl_power that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator
PROGRAM:
NAME
rtl_power: - wideband spectrum monitor utility
DESCRIPTION
Uses a re-purposed DVB-T receiver as a software defined radio to receive signals in I/Q
data form. Written for and incorporated in the osmocom rtl-sdr project.
USAGE
rtl_power, a simple FFT logger for RTL2832 based DVB-T receivers
This tool gathers signal data over a very wide area of the frequency spectrum, and then
that data can be used to find active areas of the spectrum.
Use: rtl_power -f freq_range [-options] [filename]
-f lower:upper:bin_size [Hz]
(bin size is a maximum, smaller more convenient bins
will be used.
valid range 1Hz - 2.8MHz)
[-i integration_interval (default: 10 seconds)]
(buggy if a full sweep takes longer than the interval)
[-1 enables single-shot mode (default: off)] [-e exit_timer (default: off/0)] [-d
device_index (default: 0)] [-g tuner_gain (default: automatic)] [-p ppm_error
(default: 0)] filename (a '-' dumps samples to stdout)
(omitting the filename also uses stdout)
Experimental options:
[-w window (default: rectangle)]
(hamming, blackman, blackman-harris, hann-poisson, bartlett, youssef)
[-c crop_percent (default: 0%, recommended: 20%-50%)]
(discards data at the edges, 100% discards everything) (has no effect for bins
larger than 1MHz)
[-F fir_size (default: disabled)]
(enables low-leakage downsample filter,
fir_size can be 0 or 9.
0 has bad roll off,
try with '-c 50%')
[-P enables peak hold (default: off)] [-D enable direct sampling (default: off)]
[-O enable offset tuning (default: off)]
CSV FFT output columns:
date, time, Hz low, Hz high, Hz step, samples, dbm, dbm, ...
EXAMPLES
rtl_power -f 88M:108M:125k fm_stations.csv
(creates 160 bins across the FM band,
individual stations should be visible)
rtl_power -f 100M:1G:1M -i 5m -1 survey.csv
(a five minute low res scan of nearly everything)
rtl_power -f ... -i 15m -1 log.csv
(integrate for 15 minutes and exit afterwards)
rtl_power -f ... -e 1h | gzip > log.csv.gz
(collect data for one hour and compress it on the fly)
Convert CSV to a waterfall graphic with:
http://kmkeen.com/tmp/heatmap.py.txt
rtl_power, a simple FFT logger for RTL2832 based DVB-T receivers
Use: rtl_power -f freq_range [-options] [filename]
-f lower:upper:bin_size [Hz]
(bin size is a maximum, smaller more convenient bins
will be used.
valid range 1Hz - 2.8MHz)
[-i integration_interval (default: 10 seconds)]
(buggy if a full sweep takes longer than the interval)
[-1 enables single-shot mode (default: off)] [-e exit_timer (default: off/0)] [-d
device_index (default: 0)] [-g tuner_gain (default: automatic)] [-p ppm_error
(default: 0)] filename (a '-' dumps samples to stdout)
(omitting the filename also uses stdout)
Experimental options:
[-w window (default: rectangle)]
(hamming, blackman, blackman-harris, hann-poisson, bartlett, youssef)
[-c crop_percent (default: 0%, recommended: 20%-50%)]
(discards data at the edges, 100% discards everything) (has no effect for bins
larger than 1MHz)
[-F fir_size (default: disabled)]
(enables low-leakage downsample filter,
fir_size can be 0 or 9.
0 has bad roll off,
try with '-c 50%')
[-P enables peak hold (default: off)] [-D enable direct sampling (default: off)]
[-O enable offset tuning (default: off)]
CSV FFT output columns:
date, time, Hz low, Hz high, Hz step, samples, dbm, dbm, ...
rtl_power -f 88M:108M:125k fm_stations.csv
(creates 160 bins across the FM band,
individual stations should be visible)
rtl_power -f 100M:1G:1M -i 5m -1 survey.csv
(a five minute low res scan of nearly everything)
rtl_power -f ... -i 15m -1 log.csv
(integrate for 15 minutes and exit afterwards)
rtl_power -f ... -e 1h | gzip > log.csv.gz
(collect data for one hour and compress it on the fly)
Convert CSV to a waterfall graphic with:
http://kmkeen.com/tmp/heatmap.py.txt
Use rtl_power online using onworks.net services
