diff --git a/examples/pu_tx_1_channel.grc b/examples/pu_tx_1_channel.grc
new file mode 100644
index 0000000000000000000000000000000000000000..abf0c360ff470f93c547e1809b2adcd1e41b85fd
--- /dev/null
+++ b/examples/pu_tx_1_channel.grc
@@ -0,0 +1,579 @@
+options:
+ parameters:
+ author: ''
+ catch_exceptions: 'True'
+ category: '[GRC Hier Blocks]'
+ cmake_opt: ''
+ comment: ''
+ copyright: University of Melbourne
+ description: ''
+ gen_cmake: 'On'
+ gen_linking: dynamic
+ generate_options: qt_gui
+ hier_block_src_path: '.:'
+ id: pu_tx_1_channel
+ max_nouts: '0'
+ output_language: python
+ placement: (0,0)
+ qt_qss_theme: ''
+ realtime_scheduling: ''
+ run: 'True'
+ run_command: '{python} -u {filename}'
+ run_options: prompt
+ sizing_mode: fixed
+ thread_safe_setters: ''
+ title: DSA Primary User Tx - 1 Channel
+ window_size: ''
+ states:
+ bus_sink: false
+ bus_source: false
+ bus_structure: null
+ coordinate: [8, 8]
+ rotation: 0
+ state: enabled
+
+blocks:
+- name: duration_ms
+ id: variable_qtgui_entry
+ parameters:
+ comment: ''
+ gui_hint: ''
+ label: Scenario Duration (ms)
+ type: real
+ value: '50'
+ states:
+ bus_sink: false
+ bus_source: false
+ bus_structure: null
+ coordinate: [840, 12.0]
+ rotation: 0
+ state: true
+- name: fft_len
+ id: variable
+ parameters:
+ comment: ''
+ value: '64'
+ states:
+ bus_sink: false
+ bus_source: false
+ bus_structure: null
+ coordinate: [184, 68.0]
+ rotation: 0
+ state: enabled
+- name: pdu_size
+ id: variable
+ parameters:
+ comment: ''
+ value: '64'
+ states:
+ bus_sink: false
+ bus_source: false
+ bus_structure: null
+ coordinate: [256, 68.0]
+ rotation: 0
+ state: enabled
+- name: randomize
+ id: variable_qtgui_chooser
+ parameters:
+ comment: ''
+ gui_hint: ''
+ label: Randomize
+ label0: 'False'
+ label1: 'True'
+ label2: ''
+ label3: ''
+ label4: ''
+ labels: '[]'
+ num_opts: '2'
+ option0: '0'
+ option1: 'True'
+ option2: '2'
+ option3: '3'
+ option4: '4'
+ options: '[0, 1, 2]'
+ orient: Qt.QVBoxLayout
+ type: raw
+ value: 'False'
+ widget: combo_box
+ states:
+ bus_sink: false
+ bus_source: false
+ bus_structure: null
+ coordinate: [704, 8]
+ rotation: 0
+ state: true
+- name: rf_freq
+ id: variable_qtgui_range
+ parameters:
+ comment: ''
+ gui_hint: ''
+ label: RF Frequency
+ min_len: '200'
+ orient: QtCore.Qt.Horizontal
+ rangeType: float
+ start: 70e6
+ step: 1e3
+ stop: 6e9
+ value: 2.45e9
+ widget: counter
+ states:
+ bus_sink: false
+ bus_source: false
+ bus_structure: null
+ coordinate: [336, 12.0]
+ rotation: 0
+ state: true
+- name: samp_rate
+ id: variable
+ parameters:
+ comment: ''
+ value: '1000000'
+ states:
+ bus_sink: false
+ bus_source: false
+ bus_structure: null
+ coordinate: [182, 8]
+ rotation: 0
+ state: enabled
+- name: scenario
+ id: variable_qtgui_range
+ parameters:
+ comment: ''
+ gui_hint: ''
+ label: Scenario
+ min_len: '200'
+ orient: QtCore.Qt.Horizontal
+ rangeType: int
+ start: '0'
+ step: '1'
+ stop: '1'
+ value: '1'
+ widget: counter
+ states:
+ bus_sink: false
+ bus_source: false
+ bus_structure: null
+ coordinate: [591, 9]
+ rotation: 0
+ state: true
+- name: tx_gain
+ id: variable_qtgui_range
+ parameters:
+ comment: ''
+ gui_hint: ''
+ label: Tx Gain
+ min_len: '200'
+ orient: QtCore.Qt.Horizontal
+ rangeType: float
+ start: '-23'
+ step: '1'
+ stop: '66'
+ value: '0'
+ widget: counter
+ states:
+ bus_sink: false
+ bus_source: false
+ bus_structure: null
+ coordinate: [472, 8]
+ rotation: 0
+ state: true
+- name: analog_random_source_x_0
+ id: analog_random_source_x
+ parameters:
+ affinity: ''
+ alias: ''
+ comment: ''
+ max: '256'
+ maxoutbuf: '0'
+ min: '0'
+ minoutbuf: '0'
+ num_samps: '1000'
+ repeat: 'True'
+ type: byte
+ states:
+ bus_sink: false
+ bus_source: false
+ bus_structure: null
+ coordinate: [32, 236.0]
+ rotation: 0
+ state: true
+- name: bladeRF_sink_0
+ id: bladeRF_sink
+ parameters:
+ affinity: ''
+ alias: ''
+ bias_tee0: 'False'
+ bias_tee1: 'False'
+ bw: '0'
+ comment: ''
+ dac: '10000'
+ dc_calibration: LPF_TUNING
+ device_id: '0'
+ fpga_image: ''
+ fpga_reload: 'False'
+ freq: rf_freq
+ gain0: tx_gain
+ gain1: '10'
+ if_gain0: '0'
+ if_gain1: '20'
+ in_clk: ONBOARD
+ lpf_mode: disabled
+ maxoutbuf: '0'
+ metadata: 'True'
+ minoutbuf: '0'
+ nchan: '1'
+ out_clk: 'False'
+ ref_clk: '0'
+ sample_rate: samp_rate
+ sampling: internal
+ show_pmic: 'False'
+ smb: '0'
+ tamer: internal
+ trigger0: 'False'
+ trigger1: 'False'
+ trigger_role0: master
+ trigger_role1: master
+ trigger_signal0: J51_1
+ trigger_signal1: J51_1
+ tsb_tag_name: packet_len
+ use_dac: 'False'
+ verbosity: warning
+ xb200: none
+ states:
+ bus_sink: false
+ bus_source: false
+ bus_structure: null
+ coordinate: [440, 492.0]
+ rotation: 0
+ state: disabled
+- name: blocks_multiply_const_vxx_0
+ id: blocks_multiply_const_vxx
+ parameters:
+ affinity: ''
+ alias: ''
+ comment: ''
+ const: '0.025'
+ maxoutbuf: '0'
+ minoutbuf: '0'
+ type: complex
+ vlen: '1'
+ states:
+ bus_sink: false
+ bus_source: false
+ bus_structure: null
+ coordinate: [224, 436.0]
+ rotation: 0
+ state: true
+- name: blocks_stream_to_tagged_stream_0
+ id: blocks_stream_to_tagged_stream
+ parameters:
+ affinity: ''
+ alias: ''
+ comment: ''
+ len_tag_key: '"packet_len"'
+ maxoutbuf: '0'
+ minoutbuf: '0'
+ packet_len: pdu_size
+ type: byte
+ vlen: '1'
+ states:
+ bus_sink: false
+ bus_source: false
+ bus_structure: null
+ coordinate: [216, 252.0]
+ rotation: 0
+ state: true
+- name: blocks_throttle_0
+ id: blocks_throttle
+ parameters:
+ affinity: ''
+ alias: ''
+ comment: ''
+ ignoretag: 'True'
+ maxoutbuf: '0'
+ minoutbuf: '0'
+ samples_per_second: samp_rate
+ type: complex
+ vlen: '1'
+ states:
+ bus_sink: false
+ bus_source: false
+ bus_structure: null
+ coordinate: [448, 436.0]
+ rotation: 0
+ state: enabled
+- name: digital_ofdm_tx_0
+ id: digital_ofdm_tx
+ parameters:
+ affinity: ''
+ alias: ''
+ comment: ''
+ cp_len: fft_len // 4
+ fft_len: fft_len
+ header_mod: '"BPSK"'
+ log: 'False'
+ maxoutbuf: '0'
+ minoutbuf: '0'
+ occupied_carriers: ([ii for ii in range(-26, 27) if ii not in (-21, -7, 7, 21)],)
+ packet_len_key: packet_len
+ payload_mod: '"QPSK"'
+ pilot_carriers: ((-21, -7, 7, 21,),)
+ pilot_symbols: ((1, 1, 1, -1,),)
+ rolloff: '0'
+ scramble_bits: 'False'
+ sync_word1: '[0., 0., 0., 0., 0., 0., 0., 1.41421356, 0., -1.41421356, 0., 1.41421356,
+ 0., -1.41421356, 0., -1.41421356, 0., -1.41421356, 0., 1.41421356, 0., -1.41421356,
+ 0., 1.41421356, 0., -1.41421356, 0., -1.41421356, 0., -1.41421356, 0., -1.41421356,
+ 0., 1.41421356, 0., -1.41421356, 0., 1.41421356, 0., 1.41421356, 0., 1.41421356,
+ 0., -1.41421356, 0., 1.41421356, 0., 1.41421356, 0., 1.41421356, 0., -1.41421356,
+ 0., 1.41421356, 0., 1.41421356, 0., 1.41421356, 0., 0., 0., 0., 0., 0.]'
+ sync_word2: '[0, 0, 0, 0, 0, 0, -1, -1, -1, -1, 1, 1, -1, -1, -1, 1, -1, 1, 1,
+ 1, 1, 1, -1, -1, -1, -1, -1, 1, -1, -1, 1, -1, 0, 1, -1, 1, 1, 1, -1, 1, 1,
+ 1, -1, 1, 1, 1, 1, -1, 1, -1, -1, -1, 1, -1, 1, -1, -1, -1, -1, 0, 0, 0, 0,
+ 0] '
+ states:
+ bus_sink: false
+ bus_source: false
+ bus_structure: null
+ coordinate: [448, 172.0]
+ rotation: 0
+ state: true
+- name: elen90089_dsa_pu_scenario_cc_0
+ id: elen90089_dsa_pu_scenario_cc
+ parameters:
+ affinity: ''
+ alias: ''
+ comment: ''
+ duration_ms: duration_ms
+ maxoutbuf: '0'
+ minoutbuf: '0'
+ num_channels: '1'
+ random: randomize
+ samp_rate: samp_rate
+ scenario: scenario
+ seed: '1'
+ states:
+ bus_sink: false
+ bus_source: false
+ bus_structure: null
+ coordinate: [688, 220.0]
+ rotation: 0
+ state: true
+- name: qtgui_freq_sink_x_0
+ id: qtgui_freq_sink_x
+ parameters:
+ affinity: ''
+ alias: ''
+ alpha1: '1.0'
+ alpha10: '1.0'
+ alpha2: '1.0'
+ alpha3: '1.0'
+ alpha4: '1.0'
+ alpha5: '1.0'
+ alpha6: '1.0'
+ alpha7: '1.0'
+ alpha8: '1.0'
+ alpha9: '1.0'
+ autoscale: 'False'
+ average: '1.0'
+ axislabels: 'True'
+ bw: samp_rate
+ color1: '"blue"'
+ color10: '"dark blue"'
+ color2: '"red"'
+ color3: '"green"'
+ color4: '"black"'
+ color5: '"cyan"'
+ color6: '"magenta"'
+ color7: '"yellow"'
+ color8: '"dark red"'
+ color9: '"dark green"'
+ comment: ''
+ ctrlpanel: 'False'
+ fc: '0'
+ fftsize: '1024'
+ freqhalf: 'True'
+ grid: 'False'
+ gui_hint: ''
+ label: Relative Gain
+ label1: ''
+ label10: ''''''
+ label2: ''''''
+ label3: ''''''
+ label4: ''''''
+ label5: ''''''
+ label6: ''''''
+ label7: ''''''
+ label8: ''''''
+ label9: ''''''
+ legend: 'True'
+ maxoutbuf: '0'
+ minoutbuf: '0'
+ name: '""'
+ nconnections: '1'
+ norm_window: 'False'
+ showports: 'False'
+ tr_chan: '0'
+ tr_level: '0.0'
+ tr_mode: qtgui.TRIG_MODE_FREE
+ tr_tag: '""'
+ type: complex
+ units: dB
+ update_time: '0.10'
+ width1: '1'
+ width10: '1'
+ width2: '1'
+ width3: '1'
+ width4: '1'
+ width5: '1'
+ width6: '1'
+ width7: '1'
+ width8: '1'
+ width9: '1'
+ wintype: window.WIN_BLACKMAN_hARRIS
+ ymax: '10'
+ ymin: '-140'
+ states:
+ bus_sink: false
+ bus_source: false
+ bus_structure: null
+ coordinate: [688, 500.0]
+ rotation: 0
+ state: enabled
+- name: qtgui_time_sink_x_0
+ id: qtgui_time_sink_x
+ parameters:
+ affinity: ''
+ alias: ''
+ alpha1: '1.0'
+ alpha10: '1.0'
+ alpha2: '1.0'
+ alpha3: '1.0'
+ alpha4: '1.0'
+ alpha5: '1.0'
+ alpha6: '1.0'
+ alpha7: '1.0'
+ alpha8: '1.0'
+ alpha9: '1.0'
+ autoscale: 'False'
+ axislabels: 'True'
+ color1: blue
+ color10: dark blue
+ color2: red
+ color3: green
+ color4: black
+ color5: cyan
+ color6: magenta
+ color7: yellow
+ color8: dark red
+ color9: dark green
+ comment: ''
+ ctrlpanel: 'False'
+ entags: 'True'
+ grid: 'False'
+ gui_hint: ''
+ label1: Signal 1
+ label10: Signal 10
+ label2: Signal 2
+ label3: Signal 3
+ label4: Signal 4
+ label5: Signal 5
+ label6: Signal 6
+ label7: Signal 7
+ label8: Signal 8
+ label9: Signal 9
+ legend: 'True'
+ marker1: '-1'
+ marker10: '-1'
+ marker2: '-1'
+ marker3: '-1'
+ marker4: '-1'
+ marker5: '-1'
+ marker6: '-1'
+ marker7: '-1'
+ marker8: '-1'
+ marker9: '-1'
+ name: '""'
+ nconnections: '1'
+ size: '1024'
+ srate: samp_rate
+ stemplot: 'False'
+ style1: '1'
+ style10: '1'
+ style2: '1'
+ style3: '1'
+ style4: '1'
+ style5: '1'
+ style6: '1'
+ style7: '1'
+ style8: '1'
+ style9: '1'
+ tr_chan: '0'
+ tr_delay: '0'
+ tr_level: '0.1'
+ tr_mode: qtgui.TRIG_MODE_FREE
+ tr_slope: qtgui.TRIG_SLOPE_POS
+ tr_tag: '""'
+ type: complex
+ update_time: '0.10'
+ width1: '1'
+ width10: '1'
+ width2: '1'
+ width3: '1'
+ width4: '1'
+ width5: '1'
+ width6: '1'
+ width7: '1'
+ width8: '1'
+ width9: '1'
+ ylabel: Amplitude
+ ymax: '1'
+ ymin: '-1'
+ yunit: '""'
+ states:
+ bus_sink: false
+ bus_source: false
+ bus_structure: null
+ coordinate: [688, 420.0]
+ rotation: 0
+ state: enabled
+- name: virtual_sink_1
+ id: virtual_sink
+ parameters:
+ alias: ''
+ comment: ''
+ stream_id: waveform0
+ states:
+ bus_sink: false
+ bus_source: false
+ bus_structure: null
+ coordinate: [936, 244.0]
+ rotation: 0
+ state: true
+- name: virtual_source_1
+ id: virtual_source
+ parameters:
+ alias: ''
+ comment: ''
+ stream_id: waveform0
+ states:
+ bus_sink: false
+ bus_source: false
+ bus_structure: null
+ coordinate: [24, 436.0]
+ rotation: 0
+ state: true
+
+connections:
+- [analog_random_source_x_0, '0', blocks_stream_to_tagged_stream_0, '0']
+- [blocks_multiply_const_vxx_0, '0', bladeRF_sink_0, '0']
+- [blocks_multiply_const_vxx_0, '0', blocks_throttle_0, '0']
+- [blocks_stream_to_tagged_stream_0, '0', digital_ofdm_tx_0, '0']
+- [blocks_throttle_0, '0', qtgui_freq_sink_x_0, '0']
+- [blocks_throttle_0, '0', qtgui_time_sink_x_0, '0']
+- [digital_ofdm_tx_0, '0', elen90089_dsa_pu_scenario_cc_0, '0']
+- [elen90089_dsa_pu_scenario_cc_0, '0', virtual_sink_1, '0']
+- [virtual_source_1, '0', blocks_multiply_const_vxx_0, '0']
+
+metadata:
+ file_format: 1