NAME

       osmocom_spectrum_sense - GNU Radio application from OsmoSDR

SYNOPSIS

       osmocom_spectrum_sense [options] min_freq max_freq

DESCRIPTION

       GNU Radio application from OsmoSDR

OPTIONS

       -h, --help
              show this help message and exit

       -a ARGS, --args=ARGS
              Device args [default=]

       -A ANTENNA, --antenna=ANTENNA
              Select antenna where appropriate

       -s SAMP_RATE, --samp-rate=SAMP_RATE
              Set sample rate (bandwidth), minimum by default

       -g GAIN, --gain=GAIN
              Set gain in dB (default is midpoint)

       --tune-delay=SECS
              Time to delay (in seconds) after changing frequency [default=0.25]

       --dwell-delay=SECS
              Time to dwell (in seconds) at a given frequency [default=0.25]

       -b Hz, --channel-bandwidth=Hz
              Channel bandwidth of fft bins in Hz [default=6250.0]

       -q dB, --squelch-threshold=dB
              Squelch threshold in dB [default=none]

       -F FFT_SIZE, --fft-size=FFT_SIZE
              Specify number of FFT bins [default=samp_rate/channel_bw]

       --real-time
              Attempt to enable real-time scheduling

Device specification

       You  can  specify  the  source or sink device using a comma separated string of argument=value pairs. The
       always-up-to-date block documentation with examples is available ​right here.

FCD Source

       Argument
              Notes

       fcd=<device-index>
              0-based device identifier, optional

       device=hw:2
              overrides the audio device

       type=2 selects the dongle type, 1 for Classic, 2 for Pro+

       The "device" argument overrides the audio device used by the underlying driver to access the dongle's  IQ
       sample stream.

       The "type" argument selects the dongle type, 1 for Classic, 2 for Pro+.

OsmoSDR Source

       Argument
              Notes

       osmosdr=<device-index>
              0-based device identifier

       buffers=<number-of-buffers>
              Default is 32

       buflen=<length-of-buffer>
              Default is 256kB, must be multiple of 512

RTL-SDR Source

       Argument
              Notes

       rtl=<device-index>
              0-based device identifier OR serial number

       rtl_xtal=<frequency>
              Frequency (Hz) used for the RTL chip, accepts eng notation

       tuner_xtal=<frequency>
              Frequency (Hz) used for the tuner chip, accepts eng notation

       buffers=<number-of-buffers>
              Default is 32

       buflen=<length-of-buffer>
              Default is 256kB, must be multiple of 512

       direct_samp=0|1|2
              Enable direct sampling mode on the RTL chip. 0: Disable, 1: use I channel, 2: use Q channel

       offset_tune=0|1
              Enable offset tune mode for E4000 tuners

       NOTE: use rtl_eeprom -s to program your own serial number to the device

       NOTE: if you don't specify rtl_xtal/tuner_xtal, the underlying driver will use 28.0MHz

RTL-SDR TCP Source

       Argument
              Notes

       rtl_tcp=<hostname>:<port>
              hostname defaults to "localhost", port to "1234"

       psize=<payload-size>
              Default is 16384 bytes

       direct_samp=0|1|2
              Enable direct sampling mode on the RTL chip 0=Off, 1=I-ADC input enabled, 2=Q-ADC input enabled

       offset_tune=0|1
              Enable offset tune mode for E4000 tuners

Miri Source

       Argument
              Notes

       miri=<device-index>
              0-based device identifier

       buffers=<number-of-buffers>
              Default is 32

UHD Source / Sink

       Argument Notes

       uhd    Use this argument without a value

       nchan=<channel-count>
              For multichannel USRP configurations use the subdev parameter to specify stream mapping

       subdev=<subdev-spec>
              Examples: "A:0", "B:0", "A:0 B:0" when nchan=2. Refer original ettus documentation on this

       lo_offset=<frequency>
              Offset frequency in Hz, must be within daughterboard bandwidth. Accepts eng notation

       Additional  argument/value  pairs  will  be  passed  to  the  underlying driver, for more information see
       ​specifying the subdevice and ​common device identifiers in the Ettus documentation.

bladeRF Source / Sink

       Argument
              Notes

       bladerf[=0]
              0-based device identifier (optional)

       fw='/path/to/the/firmware.img'
              program MCU firmware from given file. usually not needed. power cycle required.

       fpga='/path/to/the/bitstream.rbf'
              load FPGA bitstream from given file. required only at first run at the moment.

HackRF Source / Sink

       Argument
              Notes

       hackrf Use this argument without a value

       buffers=<number-of-buffers>
              Default is 32

       Only the first device found may be used at the moment because of libhackrf limitation.

       Transmit support has been verified by using the crc-mmbTools DAB sdr transmitter.

IQ File Source

       Argument
              Notes

       file=<path-to-file-name>

       freq=<frequency>
              Center frequency in Hz, accepts eng notation

       rate=<sampling-rate>
              Mandatory, in samples/s, accepts eng notation

       repeat=true|false
              Default is true

       throttle=true|false
              Throttle flow of samples, default is true

SEE ALSO

       osmocom_fft(1) osmocom_siggen(1) osmocom_siggen_nogui(1)

OSMOCOMM                                          October 2013                         osmocom_spectrum_sense(1)