.TH osmocom_spectrum_sense "1" "October 2013" "OSMOCOMM" "User Commands" .SH NAME osmocom_spectrum_sense \- GNU Radio application from OsmoSDR .SH SYNOPSIS .B osmocom_spectrum_sense [\fIoptions\fR] \fImin_freq max_freq\fR .SH DESCRIPTION GNU Radio application from OsmoSDR .SH OPTIONS .TP \fB\-h\fR, \fB\-\-help\fR show this help message and exit .TP \fB\-a\fR ARGS, \fB\-\-args\fR=\fIARGS\fR Device args [default=] .TP \fB\-A\fR ANTENNA, \fB\-\-antenna\fR=\fIANTENNA\fR Select antenna where appropriate .TP \fB\-s\fR SAMP_RATE, \fB\-\-samp\-rate\fR=\fISAMP_RATE\fR Set sample rate (bandwidth), minimum by default .TP \fB\-g\fR GAIN, \fB\-\-gain\fR=\fIGAIN\fR Set gain in dB (default is midpoint) .TP \fB\-\-tune\-delay\fR=\fISECS\fR Time to delay (in seconds) after changing frequency [default=0.25] .TP \fB\-\-dwell\-delay\fR=\fISECS\fR Time to dwell (in seconds) at a given frequency [default=0.25] .TP \fB\-b\fR Hz, \fB\-\-channel\-bandwidth\fR=\fIHz\fR Channel bandwidth of fft bins in Hz [default=6250.0] .TP \fB\-q\fR dB, \fB\-\-squelch\-threshold\fR=\fIdB\fR Squelch threshold in dB [default=none] .TP \fB\-F\fR FFT_SIZE, \fB\-\-fft\-size\fR=\fIFFT_SIZE\fR Specify number of FFT bins [default=samp_rate/channel_bw] .TP \fB\-\-real\-time\fR Attempt to enable real\-time scheduling .SH 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. .SH FCD Source .TP Argument Notes .TP fcd= 0-based device identifier, optional .TP device=hw:2 overrides the audio device .TP type=2 selects the dongle type, 1 for Classic, 2 for Pro+ .LP The "device" argument overrides the audio device used by the underlying driver to access the dongle's IQ sample stream. .LP The "type" argument selects the dongle type, 1 for Classic, 2 for Pro+. .SH OsmoSDR Source .TP Argument Notes .TP osmosdr= 0-based device identifier .TP buffers= Default is 32 .TP buflen= Default is 256kB, must be multiple of 512 .SH RTL-SDR Source .TP Argument Notes .TP rtl= 0-based device identifier OR serial number .TP rtl_xtal= Frequency (Hz) used for the RTL chip, accepts eng notation .TP tuner_xtal= Frequency (Hz) used for the tuner chip, accepts eng notation .TP buffers= Default is 32 .TP buflen= Default is 256kB, must be multiple of 512 .TP direct_samp=0|1|2 Enable direct sampling mode on the RTL chip. 0: Disable, 1: use I channel, 2: use Q channel .TP offset_tune=0|1 Enable offset tune mode for E4000 tuners .LP NOTE: use rtl_eeprom -s to program your own serial number to the device .LP NOTE: if you don't specify rtl_xtal/tuner_xtal, the underlying driver will use 28.0MHz .SH RTL-SDR TCP Source .TP Argument Notes .TP rtl_tcp=: hostname defaults to "localhost", port to "1234" .TP psize= Default is 16384 bytes .TP 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 .TP offset_tune=0|1 Enable offset tune mode for E4000 tuners .SH Miri Source .TP Argument Notes .TP miri= 0-based device identifier .TP buffers= Default is 32 .SH UHD Source / Sink Argument Notes .TP uhd Use this argument without a value .TP nchan= For multichannel USRP configurations use the subdev parameter to specify stream mapping .TP subdev= Examples: "A:0", "B:0", "A:0 B:0" when nchan=2. Refer original ettus documentation on this .TP lo_offset= Offset frequency in Hz, must be within daughterboard bandwidth. Accepts eng notation .LP 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. .SH bladeRF Source / Sink .TP Argument Notes .TP bladerf[=0] 0-based device identifier (optional) .TP fw='/path/to/the/firmware.img' program MCU firmware from given file. usually not needed. power cycle required. .TP fpga='/path/to/the/bitstream.rbf' load FPGA bitstream from given file. required only at first run at the moment. .SH HackRF Source / Sink .TP Argument Notes .TP hackrf Use this argument without a value .TP buffers= Default is 32 .LP Only the first device found may be used at the moment because of libhackrf limitation. .LP Transmit support has been verified by using the crc-mmbTools DAB sdr transmitter. .SH IQ File Source .TP Argument Notes .TP file= .TP freq= Center frequency in Hz, accepts eng notation .TP rate= Mandatory, in samples/s, accepts eng notation .TP repeat=true|false Default is true .TP throttle=true|false Throttle flow of samples, default is true .SH "SEE ALSO" osmocom_fft(1) osmocom_siggen(1) osmocom_siggen_nogui(1)