USRP Sink usrp_simple_sink_x from grc_gnuradio import usrp as grc_usrp grc_usrp.simple_sink_$(type.fcn)( number=$number, subdev_spec=$subdev_spec, frequency=$frequency, interpolation=$interpolation, gain=$gain, #if $mux.eval == hex(0) mux=None, #else mux=$mux, #end if auto_tr=$auto_tr, tx_enb=$tx_enb, ) set_interp_rate($interpolation) set_frequency($frequency) set_gain($gain) Input Type type enum Complex complex fcn:c Short short fcn:s Unit Number number 0 int Subdev Spec subdev_spec auto enum Auto None Side A (0, 0) Side B (1, 0) Frequency frequency real Interpolation interpolation int Gain gain real Mux mux 0x0 hex Auto T/R auto_tr None enum Ignore None Enable True Disable False TX Enable tx_enb None enum Ignore None Enable True Disable False in $type The USRP sink inputs 128 Megasamples per second / interpolation. --- Flex RF specific --- The "Auto TR" and "TX Enable" settings are flex rf specific and should be left at "Ignore" unless this is a flex rf board. If enabled, "Auto Transmit/Receive Switching" handles the preference for transmit packets vs receive packets. \ By default, "Auto TR" is disabled. The "Transmit Enable" configures the transmitter to be on or off. \ Do not leave this unconfigured.