diff --git a/README.md b/README.md
index 6fbb034..0cd3ef2 100644
--- a/README.md
+++ b/README.md
@@ -50,3 +50,4 @@ Any transmit capable device that can be used to transmit using a GNURadio gr-osm
 **lrs_pager.py** Generates a pager.bin file to be transmitted by lrs_tx.py. This code is based on [github.com/tony-tiger/lrs](https://github.com/tony-tiger/lrs)<br/>
 **lrs_tx.py** Transmits an LRS signal, based on a pager.bin file generated by lrs_pager.py<br/>
 **pocsagtx_osmocom.py** Transmits POCSAG messages using [gr-mixalot](https://github.com/unsynchronized/gr-mixalot)<br/>
+**gotenna_pro_bladerf.py** Transmits goTenna Pro broadcast messages using bladeRF and packet encoding from [gr-tenna](https://github.com/argilo/gr-tenna)<br/>
diff --git a/challengectl.py b/challengectl.py
index 7966968..06937e8 100755
--- a/challengectl.py
+++ b/challengectl.py
@@ -15,6 +15,7 @@
 import subprocess
 
 from challenges import ask, cw, usb_tx, nbfm, spectrum_paint, pocsagtx_osmocom, lrs_pager, lrs_tx
+from challenges.gotenna import gotenna_pro_tx_bladerf, gotenna_pro_tx_usrp
 
 def build_database(flagfile, devicefile):
     """Create sqlite database based on flags file and devices file. Database file name will be based on
@@ -232,6 +233,50 @@ def fire_lrs(self, device_string, flag_q, device_q, *flag_args):
             flag_q.put(flag_args[0])
         print("Returned flag to pool")
 
+    def fire_gotenna_pro(self, device_string, flag_q, device_q, *flag_args):
+        print("\nTransmitting goTenna Pro\n")
+        flag_args = flag_args[0]
+        flag = flag_args[1]
+        modopts = flag_args[2]
+        mintime = flag_args[4]
+        maxtime = flag_args[5]
+        freq = int(flag_args[6]) * 1000
+        norandsleep = flag_args[8]
+
+        devargs = [arg.strip() for arg in device_string.split(",") if arg.strip() != ""]
+        devtypes = [arg.lower() for arg in devargs]
+        gotenna_module = None
+        if("uhd" in devtypes):
+            gotenna_module = gotenna_pro_tx_usrp
+            gotennaopts = gotenna_module.argument_parser().parse_args(modopts.split())
+            gotennaopts.device_addr = ",".join([arg for arg in devargs if arg.lower() != "uhd"])
+        elif(any(devtype.startswith("hackrf") for devtype in devtypes)):
+            print("goTenna Pro is not supported on HackRF, skipping device {}".format(device_string))
+        elif(any(devtype.startswith("bladerf") for devtype in devtypes)):
+            gotenna_module = gotenna_pro_tx_bladerf
+            gotennaopts = gotenna_module.argument_parser().parse_args(modopts.split())
+            gotennaopts.device_args = device_string
+            antenna = get_antenna_port(device_string)
+            if(antenna != ""):
+                gotennaopts.antenna = antenna
+        else:
+            print("goTenna Pro is not supported on device {}, skipping".format(device_string))
+
+        if(gotenna_module != None):
+            gotennaopts.message = flag
+            gotennaopts.frequency = freq
+
+            gotenna_module.main(options=gotennaopts)
+            sleep(3)
+        disable_amp(device_string)
+        device_q.put(device_string)
+
+        if(norandsleep == False):
+            sleep(randint(mintime, maxtime))
+        replaceinqueue = flag_args[7]
+        if(replaceinqueue != False):
+            flag_q.put(flag_args[0])
+
 
 def select_freq(band):
     """Read from frequencies text file, select row that starts with band argument.
diff --git a/challenges/gotenna/__init__.py b/challenges/gotenna/__init__.py
new file mode 100644
index 0000000..98476f2
--- /dev/null
+++ b/challenges/gotenna/__init__.py
@@ -0,0 +1,4 @@
+# The flowgraphs in this package are generated by GNU Radio Companion from the
+# .grc files beside them, so they import the packet library under its bare name.
+# Importing challenges.gotenna_packet first registers it under that name.
+#from challenges import gotenna_packet  # noqa: F401
diff --git a/challenges/gotenna/gotenna_pro_tx_bladerf.grc b/challenges/gotenna/gotenna_pro_tx_bladerf.grc
new file mode 100644
index 0000000..4d93c25
--- /dev/null
+++ b/challenges/gotenna/gotenna_pro_tx_bladerf.grc
@@ -0,0 +1,932 @@
+options:
+  parameters:
+    author: ''
+    catch_exceptions: 'True'
+    category: '[GRC Hier Blocks]'
+    cmake_opt: ''
+    comment: ''
+    copyright: ''
+    description: ''
+    gen_cmake: 'On'
+    gen_linking: dynamic
+    generate_options: no_gui
+    hier_block_src_path: '.:'
+    id: gotenna_pro_tx_bladerf
+    max_nouts: '0'
+    output_language: python
+    placement: (0,0)
+    qt_qss_theme: ''
+    realtime_scheduling: ''
+    run: 'True'
+    run_command: '{python} -u {filename}'
+    run_options: run
+    sizing_mode: fixed
+    thread_safe_setters: ''
+    title: ''
+    window_size: ''
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [8, 8]
+    rotation: 0
+    state: enabled
+
+blocks:
+- name: center_freq
+  id: variable
+  parameters:
+    comment: ''
+    value: frequency - offset
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [80, 460]
+    rotation: 0
+    state: enabled
+- name: control_chan
+  id: variable
+  parameters:
+    comment: ''
+    value: '2'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [120, 524]
+    rotation: 0
+    state: enabled
+- name: data_chan
+  id: variable
+  parameters:
+    comment: ''
+    value: '2'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [224, 524]
+    rotation: 0
+    state: enabled
+- name: fsk_deviation_hz
+  id: variable
+  parameters:
+    comment: ''
+    value: '{2400: 400, 4800: 750, 9600: 1100}[baud_rate]'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [8, 332.0]
+    rotation: 0
+    state: enabled
+- name: hw_rate
+  id: variable
+  parameters:
+    comment: ''
+    value: '5760000'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [184, 460.0]
+    rotation: 0
+    state: enabled
+- name: interp
+  id: variable
+  parameters:
+    comment: ''
+    value: 480000 // baud_rate
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [8, 460]
+    rotation: 0
+    state: enabled
+- name: offset
+  id: variable
+  parameters:
+    comment: ''
+    value: '250000'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [8, 268.0]
+    rotation: 0
+    state: enabled
+- name: packets
+  id: variable
+  parameters:
+    comment: ''
+    value: gotenna_packet.encode_pro_broadcast_packets(message_type, counter_num,
+      sender_gid, recipient_gid, callsign, message, publickey_data)
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [8, 612.0]
+    rotation: 0
+    state: enabled
+- name: samp_per_sym
+  id: variable
+  parameters:
+    comment: ''
+    value: '4'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [8, 524]
+    rotation: 0
+    state: enabled
+- name: samp_rate
+  id: variable
+  parameters:
+    comment: ''
+    value: baud_rate * samp_per_sym * interp
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [8, 396]
+    rotation: 0
+    state: enabled
+- name: silence_time
+  id: variable
+  parameters:
+    comment: ''
+    value: '4000'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [160, 612.0]
+    rotation: 0
+    state: enabled
+- name: taps
+  id: variable
+  parameters:
+    comment: ''
+    value: firdes.gaussian(1.0, samp_per_sym, 0.5, 64)
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [8, 188.0]
+    rotation: 0
+    state: enabled
+- name: antenna
+  id: parameter
+  parameters:
+    alias: ''
+    comment: ''
+    hide: none
+    label: Transmit antenna
+    short_id: ''
+    type: str
+    value: ''
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [8, 44.0]
+    rotation: 0
+    state: true
+- name: baud_rate
+  id: parameter
+  parameters:
+    alias: ''
+    comment: ''
+    hide: none
+    label: Baud rate
+    short_id: ''
+    type: intx
+    value: '9600'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [768, 44.0]
+    rotation: 0
+    state: enabled
+- name: blocks_char_to_float_0
+  id: blocks_char_to_float
+  parameters:
+    affinity: ''
+    alias: ''
+    comment: ''
+    maxoutbuf: '0'
+    minoutbuf: '0'
+    scale: '1'
+    vlen: '1'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [432, 196.0]
+    rotation: 180
+    state: enabled
+- name: blocks_multiply_xx_0
+  id: blocks_multiply_xx
+  parameters:
+    affinity: ''
+    alias: ''
+    comment: ''
+    maxoutbuf: '0'
+    minoutbuf: '0'
+    num_inputs: '2'
+    type: complex
+    vlen: '1'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [632, 328.0]
+    rotation: 0
+    state: enabled
+- name: blocks_multiply_xx_1
+  id: blocks_multiply_xx
+  parameters:
+    affinity: ''
+    alias: ''
+    comment: ''
+    maxoutbuf: '0'
+    minoutbuf: '0'
+    num_inputs: '2'
+    type: complex
+    vlen: '1'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [960, 408.0]
+    rotation: 0
+    state: enabled
+- name: blocks_repeat_0
+  id: blocks_repeat
+  parameters:
+    affinity: ''
+    alias: ''
+    comment: ''
+    interp: 8 * samp_per_sym
+    maxoutbuf: '0'
+    minoutbuf: '0'
+    type: complex
+    vlen: '1'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [448, 388.0]
+    rotation: 0
+    state: enabled
+- name: blocks_repeat_1
+  id: blocks_repeat
+  parameters:
+    affinity: ''
+    alias: ''
+    comment: ''
+    interp: 8 * samp_per_sym * (hw_rate // (baud_rate * samp_per_sym))
+    maxoutbuf: '0'
+    minoutbuf: '0'
+    type: float
+    vlen: '1'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [592, 516.0]
+    rotation: 0
+    state: enabled
+- name: blocks_repeat_2
+  id: blocks_repeat
+  parameters:
+    affinity: ''
+    alias: ''
+    comment: ''
+    interp: samp_per_sym
+    maxoutbuf: '0'
+    minoutbuf: '0'
+    type: float
+    vlen: '1'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [256, 196.0]
+    rotation: 180
+    state: enabled
+- name: blocks_vco_c_0
+  id: blocks_vco_c
+  parameters:
+    affinity: ''
+    alias: ''
+    amplitude: '0.9'
+    comment: ''
+    maxoutbuf: '0'
+    minoutbuf: '0'
+    samp_rate: hw_rate
+    sensitivity: 2*math.pi
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [768, 500.0]
+    rotation: 0
+    state: enabled
+- name: blocks_vco_c_1
+  id: blocks_vco_c
+  parameters:
+    affinity: ''
+    alias: ''
+    amplitude: '1.0'
+    comment: ''
+    maxoutbuf: '0'
+    minoutbuf: '0'
+    samp_rate: baud_rate * samp_per_sym
+    sensitivity: 2 * math.pi * fsk_deviation_hz
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [440, 276.0]
+    rotation: 0
+    state: enabled
+- name: blocks_vector_source_x_0
+  id: blocks_vector_source_x
+  parameters:
+    affinity: ''
+    alias: ''
+    comment: ''
+    maxoutbuf: '0'
+    minoutbuf: '0'
+    repeat: 'False'
+    tags: '[]'
+    type: byte
+    vector: '[0]*silence_time+gotenna_packet.pro_gfsk_symbols(packets)+[0]*silence_time'
+    vlen: '1'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [776, 180.0]
+    rotation: 180
+    state: enabled
+- name: blocks_vector_source_x_1
+  id: blocks_vector_source_x
+  parameters:
+    affinity: ''
+    alias: ''
+    comment: ''
+    maxoutbuf: '0'
+    minoutbuf: '0'
+    repeat: 'True'
+    tags: '[]'
+    type: complex
+    vector: '[1]'
+    vlen: '1'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [216, 372.0]
+    rotation: 0
+    state: enabled
+- name: blocks_vector_source_x_2
+  id: blocks_vector_source_x
+  parameters:
+    affinity: ''
+    alias: ''
+    comment: ''
+    maxoutbuf: '0'
+    minoutbuf: '0'
+    repeat: 'True'
+    tags: '[]'
+    type: float
+    vector: '[offset]'
+    vlen: '1'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [360, 500.0]
+    rotation: 0
+    state: enabled
+- name: callsign
+  id: parameter
+  parameters:
+    alias: ''
+    comment: ''
+    hide: none
+    label: Sender callsign
+    short_id: ''
+    type: str
+    value: VE3IRR
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [512, 44.0]
+    rotation: 0
+    state: true
+- name: counter_num
+  id: parameter
+  parameters:
+    alias: ''
+    comment: ''
+    hide: none
+    label: Counter
+    short_id: ''
+    type: intx
+    value: '0'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [1248, 44.0]
+    rotation: 0
+    state: true
+- name: device_args
+  id: parameter
+  parameters:
+    alias: ''
+    comment: ''
+    hide: none
+    label: Osmocom device arguments
+    short_id: ''
+    type: str
+    value: bladerf=0,biastee=1
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [136, 44.0]
+    rotation: 0
+    state: true
+- name: digital_map_bb_0
+  id: digital_map_bb
+  parameters:
+    affinity: ''
+    alias: ''
+    comment: ''
+    map: '[-3, -1, 3, 1, 0]'
+    maxoutbuf: '0'
+    minoutbuf: '0'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [600, 196.0]
+    rotation: 180
+    state: enabled
+- name: frequency
+  id: parameter
+  parameters:
+    alias: ''
+    comment: ''
+    hide: none
+    label: Frequency
+    short_id: ''
+    type: eng_float
+    value: '450000000'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [872, 44.0]
+    rotation: 0
+    state: enabled
+- name: import_0
+  id: import
+  parameters:
+    alias: ''
+    comment: ''
+    imports: import gotenna_packet
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [8, 92.0]
+    rotation: 0
+    state: enabled
+- name: import_1
+  id: import
+  parameters:
+    alias: ''
+    comment: ''
+    imports: import math
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [8, 140]
+    rotation: 0
+    state: enabled
+- name: interp_fir_filter_xxx_0
+  id: interp_fir_filter_xxx
+  parameters:
+    affinity: ''
+    alias: ''
+    comment: ''
+    interp: '1'
+    maxoutbuf: '0'
+    minoutbuf: '0'
+    samp_delay: '0'
+    taps: taps
+    type: fff
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [216, 284.0]
+    rotation: 0
+    state: enabled
+- name: message
+  id: parameter
+  parameters:
+    alias: ''
+    comment: ''
+    hide: none
+    label: Message
+    short_id: ''
+    type: str
+    value: Hello world!
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [648, 44.0]
+    rotation: 0
+    state: true
+- name: message_type
+  id: parameter
+  parameters:
+    alias: ''
+    comment: ''
+    hide: none
+    label: type
+    short_id: ''
+    type: str
+    value: BROADCAST
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [984, 44.0]
+    rotation: 0
+    state: true
+- name: osmosdr_sink_0
+  id: osmosdr_sink
+  parameters:
+    affinity: ''
+    alias: ''
+    ant0: antenna
+    ant1: ''
+    ant10: ''
+    ant11: ''
+    ant12: ''
+    ant13: ''
+    ant14: ''
+    ant15: ''
+    ant16: ''
+    ant17: ''
+    ant18: ''
+    ant19: ''
+    ant2: ''
+    ant20: ''
+    ant21: ''
+    ant22: ''
+    ant23: ''
+    ant24: ''
+    ant25: ''
+    ant26: ''
+    ant27: ''
+    ant28: ''
+    ant29: ''
+    ant3: ''
+    ant30: ''
+    ant31: ''
+    ant4: ''
+    ant5: ''
+    ant6: ''
+    ant7: ''
+    ant8: ''
+    ant9: ''
+    args: device_args
+    bb_gain0: '0'
+    bb_gain1: '20'
+    bb_gain10: '20'
+    bb_gain11: '20'
+    bb_gain12: '20'
+    bb_gain13: '20'
+    bb_gain14: '20'
+    bb_gain15: '20'
+    bb_gain16: '20'
+    bb_gain17: '20'
+    bb_gain18: '20'
+    bb_gain19: '20'
+    bb_gain2: '20'
+    bb_gain20: '20'
+    bb_gain21: '20'
+    bb_gain22: '20'
+    bb_gain23: '20'
+    bb_gain24: '20'
+    bb_gain25: '20'
+    bb_gain26: '20'
+    bb_gain27: '20'
+    bb_gain28: '20'
+    bb_gain29: '20'
+    bb_gain3: '20'
+    bb_gain30: '20'
+    bb_gain31: '20'
+    bb_gain4: '20'
+    bb_gain5: '20'
+    bb_gain6: '20'
+    bb_gain7: '20'
+    bb_gain8: '20'
+    bb_gain9: '20'
+    bw0: '1000000'
+    bw1: '0'
+    bw10: '0'
+    bw11: '0'
+    bw12: '0'
+    bw13: '0'
+    bw14: '0'
+    bw15: '0'
+    bw16: '0'
+    bw17: '0'
+    bw18: '0'
+    bw19: '0'
+    bw2: '0'
+    bw20: '0'
+    bw21: '0'
+    bw22: '0'
+    bw23: '0'
+    bw24: '0'
+    bw25: '0'
+    bw26: '0'
+    bw27: '0'
+    bw28: '0'
+    bw29: '0'
+    bw3: '0'
+    bw30: '0'
+    bw31: '0'
+    bw4: '0'
+    bw5: '0'
+    bw6: '0'
+    bw7: '0'
+    bw8: '0'
+    bw9: '0'
+    clock_source0: ''
+    clock_source1: ''
+    clock_source2: ''
+    clock_source3: ''
+    clock_source4: ''
+    clock_source5: ''
+    clock_source6: ''
+    clock_source7: ''
+    comment: ''
+    corr0: '0'
+    corr1: '0'
+    corr10: '0'
+    corr11: '0'
+    corr12: '0'
+    corr13: '0'
+    corr14: '0'
+    corr15: '0'
+    corr16: '0'
+    corr17: '0'
+    corr18: '0'
+    corr19: '0'
+    corr2: '0'
+    corr20: '0'
+    corr21: '0'
+    corr22: '0'
+    corr23: '0'
+    corr24: '0'
+    corr25: '0'
+    corr26: '0'
+    corr27: '0'
+    corr28: '0'
+    corr29: '0'
+    corr3: '0'
+    corr30: '0'
+    corr31: '0'
+    corr4: '0'
+    corr5: '0'
+    corr6: '0'
+    corr7: '0'
+    corr8: '0'
+    corr9: '0'
+    freq0: center_freq
+    freq1: 100e6
+    freq10: 100e6
+    freq11: 100e6
+    freq12: 100e6
+    freq13: 100e6
+    freq14: 100e6
+    freq15: 100e6
+    freq16: 100e6
+    freq17: 100e6
+    freq18: 100e6
+    freq19: 100e6
+    freq2: 100e6
+    freq20: 100e6
+    freq21: 100e6
+    freq22: 100e6
+    freq23: 100e6
+    freq24: 100e6
+    freq25: 100e6
+    freq26: 100e6
+    freq27: 100e6
+    freq28: 100e6
+    freq29: 100e6
+    freq3: 100e6
+    freq30: 100e6
+    freq31: 100e6
+    freq4: 100e6
+    freq5: 100e6
+    freq6: 100e6
+    freq7: 100e6
+    freq8: 100e6
+    freq9: 100e6
+    gain0: '60'
+    gain1: '10'
+    gain10: '10'
+    gain11: '10'
+    gain12: '10'
+    gain13: '10'
+    gain14: '10'
+    gain15: '10'
+    gain16: '10'
+    gain17: '10'
+    gain18: '10'
+    gain19: '10'
+    gain2: '10'
+    gain20: '10'
+    gain21: '10'
+    gain22: '10'
+    gain23: '10'
+    gain24: '10'
+    gain25: '10'
+    gain26: '10'
+    gain27: '10'
+    gain28: '10'
+    gain29: '10'
+    gain3: '10'
+    gain30: '10'
+    gain31: '10'
+    gain4: '10'
+    gain5: '10'
+    gain6: '10'
+    gain7: '10'
+    gain8: '10'
+    gain9: '10'
+    if_gain0: '0'
+    if_gain1: '20'
+    if_gain10: '20'
+    if_gain11: '20'
+    if_gain12: '20'
+    if_gain13: '20'
+    if_gain14: '20'
+    if_gain15: '20'
+    if_gain16: '20'
+    if_gain17: '20'
+    if_gain18: '20'
+    if_gain19: '20'
+    if_gain2: '20'
+    if_gain20: '20'
+    if_gain21: '20'
+    if_gain22: '20'
+    if_gain23: '20'
+    if_gain24: '20'
+    if_gain25: '20'
+    if_gain26: '20'
+    if_gain27: '20'
+    if_gain28: '20'
+    if_gain29: '20'
+    if_gain3: '20'
+    if_gain30: '20'
+    if_gain31: '20'
+    if_gain4: '20'
+    if_gain5: '20'
+    if_gain6: '20'
+    if_gain7: '20'
+    if_gain8: '20'
+    if_gain9: '20'
+    maxoutbuf: '0'
+    minoutbuf: '0'
+    nchan: '1'
+    num_mboards: '1'
+    sample_rate: hw_rate
+    sync: sync
+    time_source0: ''
+    time_source1: ''
+    time_source2: ''
+    time_source3: ''
+    time_source4: ''
+    time_source5: ''
+    time_source6: ''
+    time_source7: ''
+    type: fc32
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [1184, 332.0]
+    rotation: 0
+    state: enabled
+- name: publickey_data
+  id: parameter
+  parameters:
+    alias: ''
+    comment: ''
+    hide: none
+    label: Sender Public Key
+    short_id: ''
+    type: str
+    value: base64key
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [1104, 44.0]
+    rotation: 0
+    state: true
+- name: rational_resampler_xxx_0
+  id: rational_resampler_xxx
+  parameters:
+    affinity: ''
+    alias: ''
+    comment: ''
+    decim: '1'
+    fbw: '0'
+    interp: hw_rate // (baud_rate * samp_per_sym)
+    maxoutbuf: '0'
+    minoutbuf: '0'
+    taps: ''
+    type: ccc
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [760, 316.0]
+    rotation: 0
+    state: enabled
+- name: recipient_gid
+  id: parameter
+  parameters:
+    alias: ''
+    comment: ''
+    hide: none
+    label: Recipient GID
+    short_id: ''
+    type: intx
+    value: '1234567891'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [272, 44.0]
+    rotation: 0
+    state: true
+- name: sender_gid
+  id: parameter
+  parameters:
+    alias: ''
+    comment: ''
+    hide: none
+    label: Sender GID
+    short_id: ''
+    type: intx
+    value: '1234567890'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [400, 44.0]
+    rotation: 0
+    state: true
+
+connections:
+- [blocks_char_to_float_0, '0', blocks_repeat_2, '0']
+- [blocks_multiply_xx_0, '0', rational_resampler_xxx_0, '0']
+- [blocks_multiply_xx_1, '0', osmosdr_sink_0, '0']
+- [blocks_repeat_0, '0', blocks_multiply_xx_0, '1']
+- [blocks_repeat_1, '0', blocks_vco_c_0, '0']
+- [blocks_repeat_2, '0', interp_fir_filter_xxx_0, '0']
+- [blocks_vco_c_0, '0', blocks_multiply_xx_1, '1']
+- [blocks_vco_c_1, '0', blocks_multiply_xx_0, '0']
+- [blocks_vector_source_x_0, '0', digital_map_bb_0, '0']
+- [blocks_vector_source_x_1, '0', blocks_repeat_0, '0']
+- [blocks_vector_source_x_2, '0', blocks_repeat_1, '0']
+- [digital_map_bb_0, '0', blocks_char_to_float_0, '0']
+- [interp_fir_filter_xxx_0, '0', blocks_vco_c_1, '0']
+- [rational_resampler_xxx_0, '0', blocks_multiply_xx_1, '0']
+
+metadata:
+  file_format: 1
+  grc_version: 3.10.7.0
diff --git a/challenges/gotenna/gotenna_pro_tx_bladerf.py b/challenges/gotenna/gotenna_pro_tx_bladerf.py
new file mode 100755
index 0000000..5a8d886
--- /dev/null
+++ b/challenges/gotenna/gotenna_pro_tx_bladerf.py
@@ -0,0 +1,346 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+
+#
+# SPDX-License-Identifier: GPL-3.0
+#
+# GNU Radio Python Flow Graph
+# Title: Gotenna Pro Tx Bladerf
+# GNU Radio version: 3.10.5.0
+
+from gnuradio import blocks
+from gnuradio import digital
+from gnuradio import filter
+from gnuradio.filter import firdes
+from gnuradio import gr
+from gnuradio.fft import window
+import sys
+import signal
+from argparse import ArgumentParser
+from gnuradio.eng_arg import eng_float, intx
+from gnuradio import eng_notation
+import gotenna_packet
+import math
+import osmosdr
+import time
+
+
+
+
+class gotenna_pro_tx_bladerf(gr.top_block):
+
+    def __init__(self, antenna='', baud_rate=9600, callsign='VE3IRR', counter_num=0, device_args='bladerf=0,biastee=1', frequency=450000000, message='Hello world!', message_type='BROADCAST', publickey_data='base64key', recipient_gid=1234567891, sender_gid=1234567890):
+        gr.top_block.__init__(self, "Gotenna Pro Tx Bladerf", catch_exceptions=True)
+
+        ##################################################
+        # Parameters
+        ##################################################
+        self.antenna = antenna
+        self.baud_rate = baud_rate
+        self.callsign = callsign
+        self.counter_num = counter_num
+        self.device_args = device_args
+        self.frequency = frequency
+        self.message = message
+        self.message_type = message_type
+        self.publickey_data = publickey_data
+        self.recipient_gid = recipient_gid
+        self.sender_gid = sender_gid
+
+        ##################################################
+        # Variables
+        ##################################################
+        self.samp_per_sym = samp_per_sym = 4
+        self.offset = offset = 250000
+        self.interp = interp = 480000 // baud_rate
+        self.taps = taps = firdes.gaussian(1.0, samp_per_sym, 0.5, 64)
+        self.silence_time = silence_time = 4000
+        self.samp_rate = samp_rate = baud_rate * samp_per_sym * interp
+        self.packets = packets = gotenna_packet.encode_pro_broadcast_packets(message_type, counter_num, sender_gid, recipient_gid, callsign, message, publickey_data)
+        self.hw_rate = hw_rate = 5760000
+        self.fsk_deviation_hz = fsk_deviation_hz = {2400: 400, 4800: 750, 9600: 1100}[baud_rate]
+        self.data_chan = data_chan = 2
+        self.control_chan = control_chan = 2
+        self.center_freq = center_freq = frequency - offset
+
+        ##################################################
+        # Blocks
+        ##################################################
+        self.rational_resampler_xxx_0 = filter.rational_resampler_ccc(
+                interpolation=(hw_rate // (baud_rate * samp_per_sym)),
+                decimation=1,
+                taps=[],
+                fractional_bw=0)
+        self.osmosdr_sink_0 = osmosdr.sink(
+            args="numchan=" + str(1) + " " + device_args
+        )
+        self.osmosdr_sink_0.set_time_unknown_pps(osmosdr.time_spec_t())
+        self.osmosdr_sink_0.set_sample_rate(hw_rate)
+        self.osmosdr_sink_0.set_center_freq(center_freq, 0)
+        self.osmosdr_sink_0.set_freq_corr(0, 0)
+        self.osmosdr_sink_0.set_gain(60, 0)
+        self.osmosdr_sink_0.set_if_gain(0, 0)
+        self.osmosdr_sink_0.set_bb_gain(0, 0)
+        self.osmosdr_sink_0.set_antenna(antenna, 0)
+        self.osmosdr_sink_0.set_bandwidth(1000000, 0)
+        self.interp_fir_filter_xxx_0 = filter.interp_fir_filter_fff(1, taps)
+        self.interp_fir_filter_xxx_0.declare_sample_delay(0)
+        self.digital_map_bb_0 = digital.map_bb([-3, -1, 3, 1, 0])
+        self.blocks_vector_source_x_2 = blocks.vector_source_f([offset], True, 1, [])
+        self.blocks_vector_source_x_1 = blocks.vector_source_c([1], True, 1, [])
+        self.blocks_vector_source_x_0 = blocks.vector_source_b([0]*silence_time+gotenna_packet.pro_gfsk_symbols(packets)+[0]*silence_time, False, 1, [])
+        self.blocks_vco_c_1 = blocks.vco_c((baud_rate * samp_per_sym), (2 * math.pi * fsk_deviation_hz), 1.0)
+        self.blocks_vco_c_0 = blocks.vco_c(hw_rate, (2*math.pi), 0.9)
+        self.blocks_repeat_2 = blocks.repeat(gr.sizeof_float*1, samp_per_sym)
+        self.blocks_repeat_1 = blocks.repeat(gr.sizeof_float*1, (8 * samp_per_sym * (hw_rate // (baud_rate * samp_per_sym))))
+        self.blocks_repeat_0 = blocks.repeat(gr.sizeof_gr_complex*1, (8 * samp_per_sym))
+        self.blocks_multiply_xx_1 = blocks.multiply_vcc(1)
+        self.blocks_multiply_xx_0 = blocks.multiply_vcc(1)
+        self.blocks_char_to_float_0 = blocks.char_to_float(1, 1)
+
+
+        ##################################################
+        # Connections
+        ##################################################
+        self.connect((self.blocks_char_to_float_0, 0), (self.blocks_repeat_2, 0))
+        self.connect((self.blocks_multiply_xx_0, 0), (self.rational_resampler_xxx_0, 0))
+        self.connect((self.blocks_multiply_xx_1, 0), (self.osmosdr_sink_0, 0))
+        self.connect((self.blocks_repeat_0, 0), (self.blocks_multiply_xx_0, 1))
+        self.connect((self.blocks_repeat_1, 0), (self.blocks_vco_c_0, 0))
+        self.connect((self.blocks_repeat_2, 0), (self.interp_fir_filter_xxx_0, 0))
+        self.connect((self.blocks_vco_c_0, 0), (self.blocks_multiply_xx_1, 1))
+        self.connect((self.blocks_vco_c_1, 0), (self.blocks_multiply_xx_0, 0))
+        self.connect((self.blocks_vector_source_x_0, 0), (self.digital_map_bb_0, 0))
+        self.connect((self.blocks_vector_source_x_1, 0), (self.blocks_repeat_0, 0))
+        self.connect((self.blocks_vector_source_x_2, 0), (self.blocks_repeat_1, 0))
+        self.connect((self.digital_map_bb_0, 0), (self.blocks_char_to_float_0, 0))
+        self.connect((self.interp_fir_filter_xxx_0, 0), (self.blocks_vco_c_1, 0))
+        self.connect((self.rational_resampler_xxx_0, 0), (self.blocks_multiply_xx_1, 0))
+
+
+    def get_antenna(self):
+        return self.antenna
+
+    def set_antenna(self, antenna):
+        self.antenna = antenna
+        self.osmosdr_sink_0.set_antenna(self.antenna, 0)
+
+    def get_baud_rate(self):
+        return self.baud_rate
+
+    def set_baud_rate(self, baud_rate):
+        self.baud_rate = baud_rate
+        self.set_fsk_deviation_hz({2400: 400, 4800: 750, 9600: 1100}[self.baud_rate])
+        self.set_interp(480000 // self.baud_rate)
+        self.set_samp_rate(self.baud_rate * self.samp_per_sym * self.interp)
+        self.blocks_repeat_1.set_interpolation((8 * self.samp_per_sym * (self.hw_rate // (self.baud_rate * self.samp_per_sym))))
+
+    def get_callsign(self):
+        return self.callsign
+
+    def set_callsign(self, callsign):
+        self.callsign = callsign
+        self.set_packets(gotenna_packet.encode_pro_broadcast_packets(self.message_type, self.counter_num, self.sender_gid, self.recipient_gid, self.callsign, self.message, self.publickey_data))
+
+    def get_counter_num(self):
+        return self.counter_num
+
+    def set_counter_num(self, counter_num):
+        self.counter_num = counter_num
+        self.set_packets(gotenna_packet.encode_pro_broadcast_packets(self.message_type, self.counter_num, self.sender_gid, self.recipient_gid, self.callsign, self.message, self.publickey_data))
+
+    def get_device_args(self):
+        return self.device_args
+
+    def set_device_args(self, device_args):
+        self.device_args = device_args
+
+    def get_frequency(self):
+        return self.frequency
+
+    def set_frequency(self, frequency):
+        self.frequency = frequency
+        self.set_center_freq(self.frequency - self.offset)
+
+    def get_message(self):
+        return self.message
+
+    def set_message(self, message):
+        self.message = message
+        self.set_packets(gotenna_packet.encode_pro_broadcast_packets(self.message_type, self.counter_num, self.sender_gid, self.recipient_gid, self.callsign, self.message, self.publickey_data))
+
+    def get_message_type(self):
+        return self.message_type
+
+    def set_message_type(self, message_type):
+        self.message_type = message_type
+        self.set_packets(gotenna_packet.encode_pro_broadcast_packets(self.message_type, self.counter_num, self.sender_gid, self.recipient_gid, self.callsign, self.message, self.publickey_data))
+
+    def get_publickey_data(self):
+        return self.publickey_data
+
+    def set_publickey_data(self, publickey_data):
+        self.publickey_data = publickey_data
+        self.set_packets(gotenna_packet.encode_pro_broadcast_packets(self.message_type, self.counter_num, self.sender_gid, self.recipient_gid, self.callsign, self.message, self.publickey_data))
+
+    def get_recipient_gid(self):
+        return self.recipient_gid
+
+    def set_recipient_gid(self, recipient_gid):
+        self.recipient_gid = recipient_gid
+        self.set_packets(gotenna_packet.encode_pro_broadcast_packets(self.message_type, self.counter_num, self.sender_gid, self.recipient_gid, self.callsign, self.message, self.publickey_data))
+
+    def get_sender_gid(self):
+        return self.sender_gid
+
+    def set_sender_gid(self, sender_gid):
+        self.sender_gid = sender_gid
+        self.set_packets(gotenna_packet.encode_pro_broadcast_packets(self.message_type, self.counter_num, self.sender_gid, self.recipient_gid, self.callsign, self.message, self.publickey_data))
+
+    def get_samp_per_sym(self):
+        return self.samp_per_sym
+
+    def set_samp_per_sym(self, samp_per_sym):
+        self.samp_per_sym = samp_per_sym
+        self.set_samp_rate(self.baud_rate * self.samp_per_sym * self.interp)
+        self.set_taps(firdes.gaussian(1.0, self.samp_per_sym, 0.5, 64))
+        self.blocks_repeat_0.set_interpolation((8 * self.samp_per_sym))
+        self.blocks_repeat_1.set_interpolation((8 * self.samp_per_sym * (self.hw_rate // (self.baud_rate * self.samp_per_sym))))
+        self.blocks_repeat_2.set_interpolation(self.samp_per_sym)
+
+    def get_offset(self):
+        return self.offset
+
+    def set_offset(self, offset):
+        self.offset = offset
+        self.set_center_freq(self.frequency - self.offset)
+        self.blocks_vector_source_x_2.set_data([self.offset], [])
+
+    def get_interp(self):
+        return self.interp
+
+    def set_interp(self, interp):
+        self.interp = interp
+        self.set_samp_rate(self.baud_rate * self.samp_per_sym * self.interp)
+
+    def get_taps(self):
+        return self.taps
+
+    def set_taps(self, taps):
+        self.taps = taps
+        self.interp_fir_filter_xxx_0.set_taps(self.taps)
+
+    def get_silence_time(self):
+        return self.silence_time
+
+    def set_silence_time(self, silence_time):
+        self.silence_time = silence_time
+        self.blocks_vector_source_x_0.set_data([0]*self.silence_time+gotenna_packet.pro_gfsk_symbols(self.packets)+[0]*self.silence_time, [])
+
+    def get_samp_rate(self):
+        return self.samp_rate
+
+    def set_samp_rate(self, samp_rate):
+        self.samp_rate = samp_rate
+
+    def get_packets(self):
+        return self.packets
+
+    def set_packets(self, packets):
+        self.packets = packets
+        self.blocks_vector_source_x_0.set_data([0]*self.silence_time+gotenna_packet.pro_gfsk_symbols(self.packets)+[0]*self.silence_time, [])
+
+    def get_hw_rate(self):
+        return self.hw_rate
+
+    def set_hw_rate(self, hw_rate):
+        self.hw_rate = hw_rate
+        self.blocks_repeat_1.set_interpolation((8 * self.samp_per_sym * (self.hw_rate // (self.baud_rate * self.samp_per_sym))))
+        self.osmosdr_sink_0.set_sample_rate(self.hw_rate)
+
+    def get_fsk_deviation_hz(self):
+        return self.fsk_deviation_hz
+
+    def set_fsk_deviation_hz(self, fsk_deviation_hz):
+        self.fsk_deviation_hz = fsk_deviation_hz
+
+    def get_data_chan(self):
+        return self.data_chan
+
+    def set_data_chan(self, data_chan):
+        self.data_chan = data_chan
+
+    def get_control_chan(self):
+        return self.control_chan
+
+    def set_control_chan(self, control_chan):
+        self.control_chan = control_chan
+
+    def get_center_freq(self):
+        return self.center_freq
+
+    def set_center_freq(self, center_freq):
+        self.center_freq = center_freq
+        self.osmosdr_sink_0.set_center_freq(self.center_freq, 0)
+
+
+
+def argument_parser():
+    parser = ArgumentParser()
+    parser.add_argument(
+        "--antenna", dest="antenna", type=str, default='',
+        help="Set Transmit antenna [default=%(default)r]")
+    parser.add_argument(
+        "--baud-rate", dest="baud_rate", type=intx, default=9600,
+        help="Set Baud rate [default=%(default)r]")
+    parser.add_argument(
+        "--callsign", dest="callsign", type=str, default='VE3IRR',
+        help="Set Sender callsign [default=%(default)r]")
+    parser.add_argument(
+        "--counter-num", dest="counter_num", type=intx, default=0,
+        help="Set Counter [default=%(default)r]")
+    parser.add_argument(
+        "--device-args", dest="device_args", type=str, default='bladerf=0,biastee=1',
+        help="Set Osmocom device arguments [default=%(default)r]")
+    parser.add_argument(
+        "--frequency", dest="frequency", type=eng_float, default=eng_notation.num_to_str(float(450000000)),
+        help="Set Frequency [default=%(default)r]")
+    parser.add_argument(
+        "--message", dest="message", type=str, default='Hello world!',
+        help="Set Message [default=%(default)r]")
+    parser.add_argument(
+        "--message-type", dest="message_type", type=str, default='BROADCAST',
+        help="Set type [default=%(default)r]")
+    parser.add_argument(
+        "--publickey-data", dest="publickey_data", type=str, default='base64key',
+        help="Set Sender Public Key [default=%(default)r]")
+    parser.add_argument(
+        "--recipient-gid", dest="recipient_gid", type=intx, default=1234567891,
+        help="Set Recipient GID [default=%(default)r]")
+    parser.add_argument(
+        "--sender-gid", dest="sender_gid", type=intx, default=1234567890,
+        help="Set Sender GID [default=%(default)r]")
+    return parser
+
+
+def main(top_block_cls=gotenna_pro_tx_bladerf, options=None):
+    if options is None:
+        options = argument_parser().parse_args()
+    tb = top_block_cls(antenna=options.antenna, baud_rate=options.baud_rate, callsign=options.callsign, counter_num=options.counter_num, device_args=options.device_args, frequency=options.frequency, message=options.message, message_type=options.message_type, publickey_data=options.publickey_data, recipient_gid=options.recipient_gid, sender_gid=options.sender_gid)
+
+    #def sig_handler(sig=None, frame=None):
+    #    tb.stop()
+    #    tb.wait()
+
+    #    sys.exit(0)
+
+    #signal.signal(signal.SIGINT, sig_handler)
+    #signal.signal(signal.SIGTERM, sig_handler)
+
+    tb.start()
+
+    tb.wait()
+
+
+if __name__ == '__main__':
+    main()
diff --git a/challenges/gotenna/gotenna_pro_tx_usrp.grc b/challenges/gotenna/gotenna_pro_tx_usrp.grc
new file mode 100644
index 0000000..43de67d
--- /dev/null
+++ b/challenges/gotenna/gotenna_pro_tx_usrp.grc
@@ -0,0 +1,947 @@
+options:
+  parameters:
+    author: ''
+    catch_exceptions: 'True'
+    category: '[GRC Hier Blocks]'
+    cmake_opt: ''
+    comment: ''
+    copyright: ''
+    description: ''
+    gen_cmake: 'On'
+    gen_linking: dynamic
+    generate_options: no_gui
+    hier_block_src_path: '.:'
+    id: gotenna_pro_tx_usrp
+    max_nouts: '0'
+    output_language: python
+    placement: (0,0)
+    qt_qss_theme: ''
+    realtime_scheduling: ''
+    run: 'True'
+    run_command: '{python} -u {filename}'
+    run_options: run
+    sizing_mode: fixed
+    thread_safe_setters: ''
+    title: ''
+    window_size: ''
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [8, 8]
+    rotation: 0
+    state: enabled
+
+blocks:
+- name: center_freq
+  id: variable
+  parameters:
+    comment: ''
+    value: frequency - offset
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [80, 460]
+    rotation: 0
+    state: enabled
+- name: control_chan
+  id: variable
+  parameters:
+    comment: ''
+    value: '2'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [120, 524]
+    rotation: 0
+    state: enabled
+- name: data_chan
+  id: variable
+  parameters:
+    comment: ''
+    value: '2'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [224, 524]
+    rotation: 0
+    state: enabled
+- name: fsk_deviation_hz
+  id: variable
+  parameters:
+    comment: ''
+    value: '{2400: 400, 4800: 750, 9600: 1100}[baud_rate]'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [8, 332.0]
+    rotation: 0
+    state: enabled
+- name: interp
+  id: variable
+  parameters:
+    comment: ''
+    value: 480000 // baud_rate
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [8, 460]
+    rotation: 0
+    state: enabled
+- name: offset
+  id: variable
+  parameters:
+    comment: ''
+    value: '250000'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [8, 268.0]
+    rotation: 0
+    state: enabled
+- name: packets
+  id: variable
+  parameters:
+    comment: ''
+    value: gotenna_packet.encode_pro_broadcast_packets(message_type, counter_num,
+      sender_gid, recipient_gid, callsign, message, publickey_data)
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [8, 612.0]
+    rotation: 0
+    state: enabled
+- name: samp_per_sym
+  id: variable
+  parameters:
+    comment: ''
+    value: '4'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [8, 524]
+    rotation: 0
+    state: enabled
+- name: samp_rate
+  id: variable
+  parameters:
+    comment: ''
+    value: baud_rate * samp_per_sym * interp
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [8, 396]
+    rotation: 0
+    state: enabled
+- name: taps
+  id: variable
+  parameters:
+    comment: ''
+    value: firdes.gaussian(1.0, samp_per_sym, 0.5, 64)
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [8, 188.0]
+    rotation: 0
+    state: enabled
+- name: baud_rate
+  id: parameter
+  parameters:
+    alias: ''
+    comment: ''
+    hide: none
+    label: Baud rate
+    short_id: ''
+    type: intx
+    value: '9600'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [768, 44.0]
+    rotation: 0
+    state: enabled
+- name: blocks_char_to_float_0
+  id: blocks_char_to_float
+  parameters:
+    affinity: ''
+    alias: ''
+    comment: ''
+    maxoutbuf: '0'
+    minoutbuf: '0'
+    scale: '1'
+    vlen: '1'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [432, 196.0]
+    rotation: 180
+    state: enabled
+- name: blocks_file_sink_0
+  id: blocks_file_sink
+  parameters:
+    affinity: ''
+    alias: ''
+    append: 'False'
+    comment: ''
+    file: pro_synth.cf32
+    type: complex
+    unbuffered: 'False'
+    vlen: '1'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [1136, 492.0]
+    rotation: 0
+    state: disabled
+- name: blocks_multiply_xx_0
+  id: blocks_multiply_xx
+  parameters:
+    affinity: ''
+    alias: ''
+    comment: ''
+    maxoutbuf: '0'
+    minoutbuf: '0'
+    num_inputs: '2'
+    type: complex
+    vlen: '1'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [632, 328.0]
+    rotation: 0
+    state: enabled
+- name: blocks_multiply_xx_1
+  id: blocks_multiply_xx
+  parameters:
+    affinity: ''
+    alias: ''
+    comment: ''
+    maxoutbuf: '0'
+    minoutbuf: '0'
+    num_inputs: '2'
+    type: complex
+    vlen: '1'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [960, 408.0]
+    rotation: 0
+    state: enabled
+- name: blocks_repeat_0
+  id: blocks_repeat
+  parameters:
+    affinity: ''
+    alias: ''
+    comment: ''
+    interp: 8 * samp_per_sym
+    maxoutbuf: '0'
+    minoutbuf: '0'
+    type: complex
+    vlen: '1'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [448, 388.0]
+    rotation: 0
+    state: enabled
+- name: blocks_repeat_1
+  id: blocks_repeat
+  parameters:
+    affinity: ''
+    alias: ''
+    comment: ''
+    interp: 8 * samp_per_sym * interp
+    maxoutbuf: '0'
+    minoutbuf: '0'
+    type: float
+    vlen: '1'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [592, 516.0]
+    rotation: 0
+    state: enabled
+- name: blocks_repeat_2
+  id: blocks_repeat
+  parameters:
+    affinity: ''
+    alias: ''
+    comment: ''
+    interp: samp_per_sym
+    maxoutbuf: '0'
+    minoutbuf: '0'
+    type: float
+    vlen: '1'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [256, 196.0]
+    rotation: 180
+    state: enabled
+- name: blocks_vco_c_0
+  id: blocks_vco_c
+  parameters:
+    affinity: ''
+    alias: ''
+    amplitude: '0.9'
+    comment: ''
+    maxoutbuf: '0'
+    minoutbuf: '0'
+    samp_rate: samp_rate
+    sensitivity: 2*math.pi
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [768, 500.0]
+    rotation: 0
+    state: enabled
+- name: blocks_vco_c_1
+  id: blocks_vco_c
+  parameters:
+    affinity: ''
+    alias: ''
+    amplitude: '1.0'
+    comment: ''
+    maxoutbuf: '0'
+    minoutbuf: '0'
+    samp_rate: baud_rate * samp_per_sym
+    sensitivity: 2 * math.pi * fsk_deviation_hz
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [440, 276.0]
+    rotation: 0
+    state: enabled
+- name: blocks_vector_source_x_0
+  id: blocks_vector_source_x
+  parameters:
+    affinity: ''
+    alias: ''
+    comment: ''
+    maxoutbuf: '0'
+    minoutbuf: '0'
+    repeat: 'False'
+    tags: '[]'
+    type: byte
+    vector: gotenna_packet.pro_gfsk_symbols(packets)
+    vlen: '1'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [776, 180.0]
+    rotation: 180
+    state: enabled
+- name: blocks_vector_source_x_1
+  id: blocks_vector_source_x
+  parameters:
+    affinity: ''
+    alias: ''
+    comment: ''
+    maxoutbuf: '0'
+    minoutbuf: '0'
+    repeat: 'True'
+    tags: '[]'
+    type: complex
+    vector: '[1]'
+    vlen: '1'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [216, 372.0]
+    rotation: 0
+    state: enabled
+- name: blocks_vector_source_x_2
+  id: blocks_vector_source_x
+  parameters:
+    affinity: ''
+    alias: ''
+    comment: ''
+    maxoutbuf: '0'
+    minoutbuf: '0'
+    repeat: 'True'
+    tags: '[]'
+    type: float
+    vector: '[offset]'
+    vlen: '1'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [360, 500.0]
+    rotation: 0
+    state: enabled
+- name: callsign
+  id: parameter
+  parameters:
+    alias: ''
+    comment: ''
+    hide: none
+    label: Sender callsign
+    short_id: ''
+    type: str
+    value: VE3IRR
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [512, 44.0]
+    rotation: 0
+    state: true
+- name: counter_num
+  id: parameter
+  parameters:
+    alias: ''
+    comment: ''
+    hide: none
+    label: Counter
+    short_id: ''
+    type: intx
+    value: '0'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [1288, 44.0]
+    rotation: 0
+    state: true
+- name: device_addr
+  id: parameter
+  parameters:
+    alias: ''
+    comment: ''
+    hide: none
+    label: UHD device address
+    short_id: ''
+    type: str
+    value: ''
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [8, 44.0]
+    rotation: 0
+    state: true
+- name: digital_map_bb_0
+  id: digital_map_bb
+  parameters:
+    affinity: ''
+    alias: ''
+    comment: ''
+    map: '[-3, -1, 3, 1, 0]'
+    maxoutbuf: '0'
+    minoutbuf: '0'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [600, 196.0]
+    rotation: 180
+    state: enabled
+- name: frequency
+  id: parameter
+  parameters:
+    alias: ''
+    comment: ''
+    hide: none
+    label: Frequency
+    short_id: ''
+    type: eng_float
+    value: '450000000'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [872, 44.0]
+    rotation: 0
+    state: enabled
+- name: import_0
+  id: import
+  parameters:
+    alias: ''
+    comment: ''
+    imports: import gotenna_packet
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [8, 92.0]
+    rotation: 0
+    state: enabled
+- name: import_1
+  id: import
+  parameters:
+    alias: ''
+    comment: ''
+    imports: import math
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [8, 140]
+    rotation: 0
+    state: enabled
+- name: interp_fir_filter_xxx_0
+  id: interp_fir_filter_xxx
+  parameters:
+    affinity: ''
+    alias: ''
+    comment: ''
+    interp: '1'
+    maxoutbuf: '0'
+    minoutbuf: '0'
+    samp_delay: '0'
+    taps: taps
+    type: fff
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [216, 284.0]
+    rotation: 0
+    state: enabled
+- name: message
+  id: parameter
+  parameters:
+    alias: ''
+    comment: ''
+    hide: none
+    label: Message
+    short_id: ''
+    type: str
+    value: Hello world!
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [648, 44.0]
+    rotation: 0
+    state: true
+- name: message_type
+  id: parameter
+  parameters:
+    alias: ''
+    comment: ''
+    hide: none
+    label: type
+    short_id: ''
+    type: str
+    value: BROADCAST
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [984, 44.0]
+    rotation: 0
+    state: true
+- name: publickey_data
+  id: parameter
+  parameters:
+    alias: ''
+    comment: ''
+    hide: none
+    label: Sender Public Key
+    short_id: ''
+    type: str
+    value: base64key
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [1104, 44.0]
+    rotation: 0
+    state: true
+- name: rational_resampler_xxx_0
+  id: rational_resampler_xxx
+  parameters:
+    affinity: ''
+    alias: ''
+    comment: ''
+    decim: '1'
+    fbw: '0'
+    interp: interp
+    maxoutbuf: '0'
+    minoutbuf: '0'
+    taps: ''
+    type: ccc
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [760, 316.0]
+    rotation: 0
+    state: enabled
+- name: rational_resampler_xxx_1
+  id: rational_resampler_xxx
+  parameters:
+    affinity: ''
+    alias: ''
+    comment: ''
+    decim: '48'
+    fbw: '0'
+    interp: '25'
+    maxoutbuf: '0'
+    minoutbuf: '0'
+    taps: '[]'
+    type: ccc
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [992, 580.0]
+    rotation: 0
+    state: disabled
+- name: recipient_gid
+  id: parameter
+  parameters:
+    alias: ''
+    comment: ''
+    hide: none
+    label: Recipient GID
+    short_id: ''
+    type: intx
+    value: '1234567891'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [272, 44.0]
+    rotation: 0
+    state: true
+- name: sender_gid
+  id: parameter
+  parameters:
+    alias: ''
+    comment: ''
+    hide: none
+    label: Sender GID
+    short_id: ''
+    type: intx
+    value: '1234567890'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [400, 44.0]
+    rotation: 0
+    state: true
+- name: uhd_usrp_sink_0
+  id: uhd_usrp_sink
+  parameters:
+    affinity: ''
+    alias: ''
+    ant0: '"TX/RX"'
+    ant1: ''
+    ant10: ''
+    ant11: ''
+    ant12: ''
+    ant13: ''
+    ant14: ''
+    ant15: ''
+    ant16: ''
+    ant17: ''
+    ant18: ''
+    ant19: ''
+    ant2: ''
+    ant20: ''
+    ant21: ''
+    ant22: ''
+    ant23: ''
+    ant24: ''
+    ant25: ''
+    ant26: ''
+    ant27: ''
+    ant28: ''
+    ant29: ''
+    ant3: ''
+    ant30: ''
+    ant31: ''
+    ant4: ''
+    ant5: ''
+    ant6: ''
+    ant7: ''
+    ant8: ''
+    ant9: ''
+    bw0: '0'
+    bw1: '0'
+    bw10: '0'
+    bw11: '0'
+    bw12: '0'
+    bw13: '0'
+    bw14: '0'
+    bw15: '0'
+    bw16: '0'
+    bw17: '0'
+    bw18: '0'
+    bw19: '0'
+    bw2: '0'
+    bw20: '0'
+    bw21: '0'
+    bw22: '0'
+    bw23: '0'
+    bw24: '0'
+    bw25: '0'
+    bw26: '0'
+    bw27: '0'
+    bw28: '0'
+    bw29: '0'
+    bw3: '0'
+    bw30: '0'
+    bw31: '0'
+    bw4: '0'
+    bw5: '0'
+    bw6: '0'
+    bw7: '0'
+    bw8: '0'
+    bw9: '0'
+    center_freq0: center_freq
+    center_freq1: '0'
+    center_freq10: '0'
+    center_freq11: '0'
+    center_freq12: '0'
+    center_freq13: '0'
+    center_freq14: '0'
+    center_freq15: '0'
+    center_freq16: '0'
+    center_freq17: '0'
+    center_freq18: '0'
+    center_freq19: '0'
+    center_freq2: '0'
+    center_freq20: '0'
+    center_freq21: '0'
+    center_freq22: '0'
+    center_freq23: '0'
+    center_freq24: '0'
+    center_freq25: '0'
+    center_freq26: '0'
+    center_freq27: '0'
+    center_freq28: '0'
+    center_freq29: '0'
+    center_freq3: '0'
+    center_freq30: '0'
+    center_freq31: '0'
+    center_freq4: '0'
+    center_freq5: '0'
+    center_freq6: '0'
+    center_freq7: '0'
+    center_freq8: '0'
+    center_freq9: '0'
+    clock_rate: '0.0'
+    clock_source0: ''
+    clock_source1: ''
+    clock_source2: ''
+    clock_source3: ''
+    clock_source4: ''
+    clock_source5: ''
+    clock_source6: ''
+    clock_source7: ''
+    comment: ''
+    dev_addr: device_addr
+    dev_args: '""'
+    gain0: '70'
+    gain1: '0'
+    gain10: '0'
+    gain11: '0'
+    gain12: '0'
+    gain13: '0'
+    gain14: '0'
+    gain15: '0'
+    gain16: '0'
+    gain17: '0'
+    gain18: '0'
+    gain19: '0'
+    gain2: '0'
+    gain20: '0'
+    gain21: '0'
+    gain22: '0'
+    gain23: '0'
+    gain24: '0'
+    gain25: '0'
+    gain26: '0'
+    gain27: '0'
+    gain28: '0'
+    gain29: '0'
+    gain3: '0'
+    gain30: '0'
+    gain31: '0'
+    gain4: '0'
+    gain5: '0'
+    gain6: '0'
+    gain7: '0'
+    gain8: '0'
+    gain9: '0'
+    gain_type0: default
+    gain_type1: default
+    gain_type10: default
+    gain_type11: default
+    gain_type12: default
+    gain_type13: default
+    gain_type14: default
+    gain_type15: default
+    gain_type16: default
+    gain_type17: default
+    gain_type18: default
+    gain_type19: default
+    gain_type2: default
+    gain_type20: default
+    gain_type21: default
+    gain_type22: default
+    gain_type23: default
+    gain_type24: default
+    gain_type25: default
+    gain_type26: default
+    gain_type27: default
+    gain_type28: default
+    gain_type29: default
+    gain_type3: default
+    gain_type30: default
+    gain_type31: default
+    gain_type4: default
+    gain_type5: default
+    gain_type6: default
+    gain_type7: default
+    gain_type8: default
+    gain_type9: default
+    len_tag_name: ''
+    lo_export0: 'False'
+    lo_export1: 'False'
+    lo_export10: 'False'
+    lo_export11: 'False'
+    lo_export12: 'False'
+    lo_export13: 'False'
+    lo_export14: 'False'
+    lo_export15: 'False'
+    lo_export16: 'False'
+    lo_export17: 'False'
+    lo_export18: 'False'
+    lo_export19: 'False'
+    lo_export2: 'False'
+    lo_export20: 'False'
+    lo_export21: 'False'
+    lo_export22: 'False'
+    lo_export23: 'False'
+    lo_export24: 'False'
+    lo_export25: 'False'
+    lo_export26: 'False'
+    lo_export27: 'False'
+    lo_export28: 'False'
+    lo_export29: 'False'
+    lo_export3: 'False'
+    lo_export30: 'False'
+    lo_export31: 'False'
+    lo_export4: 'False'
+    lo_export5: 'False'
+    lo_export6: 'False'
+    lo_export7: 'False'
+    lo_export8: 'False'
+    lo_export9: 'False'
+    lo_source0: internal
+    lo_source1: internal
+    lo_source10: internal
+    lo_source11: internal
+    lo_source12: internal
+    lo_source13: internal
+    lo_source14: internal
+    lo_source15: internal
+    lo_source16: internal
+    lo_source17: internal
+    lo_source18: internal
+    lo_source19: internal
+    lo_source2: internal
+    lo_source20: internal
+    lo_source21: internal
+    lo_source22: internal
+    lo_source23: internal
+    lo_source24: internal
+    lo_source25: internal
+    lo_source26: internal
+    lo_source27: internal
+    lo_source28: internal
+    lo_source29: internal
+    lo_source3: internal
+    lo_source30: internal
+    lo_source31: internal
+    lo_source4: internal
+    lo_source5: internal
+    lo_source6: internal
+    lo_source7: internal
+    lo_source8: internal
+    lo_source9: internal
+    maxoutbuf: '0'
+    minoutbuf: '0'
+    nchan: '1'
+    num_mboards: '1'
+    otw: ''
+    samp_rate: samp_rate
+    sd_spec0: ''
+    sd_spec1: ''
+    sd_spec2: ''
+    sd_spec3: ''
+    sd_spec4: ''
+    sd_spec5: ''
+    sd_spec6: ''
+    sd_spec7: ''
+    show_lo_controls: 'False'
+    start_time: '-1.0'
+    stream_args: ''
+    stream_chans: '[]'
+    sync: sync
+    time_source0: ''
+    time_source1: ''
+    time_source2: ''
+    time_source3: ''
+    time_source4: ''
+    time_source5: ''
+    time_source6: ''
+    time_source7: ''
+    type: fc32
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [1144, 380.0]
+    rotation: 0
+    state: enabled
+
+connections:
+- [blocks_char_to_float_0, '0', blocks_repeat_2, '0']
+- [blocks_multiply_xx_0, '0', rational_resampler_xxx_0, '0']
+- [blocks_multiply_xx_1, '0', rational_resampler_xxx_1, '0']
+- [blocks_multiply_xx_1, '0', uhd_usrp_sink_0, '0']
+- [blocks_repeat_0, '0', blocks_multiply_xx_0, '1']
+- [blocks_repeat_1, '0', blocks_vco_c_0, '0']
+- [blocks_repeat_2, '0', interp_fir_filter_xxx_0, '0']
+- [blocks_vco_c_0, '0', blocks_multiply_xx_1, '1']
+- [blocks_vco_c_1, '0', blocks_multiply_xx_0, '0']
+- [blocks_vector_source_x_0, '0', digital_map_bb_0, '0']
+- [blocks_vector_source_x_1, '0', blocks_repeat_0, '0']
+- [blocks_vector_source_x_2, '0', blocks_repeat_1, '0']
+- [digital_map_bb_0, '0', blocks_char_to_float_0, '0']
+- [interp_fir_filter_xxx_0, '0', blocks_vco_c_1, '0']
+- [rational_resampler_xxx_0, '0', blocks_multiply_xx_1, '0']
+- [rational_resampler_xxx_1, '0', blocks_file_sink_0, '0']
+
+metadata:
+  file_format: 1
+  grc_version: 3.10.9.2
diff --git a/challenges/gotenna/gotenna_pro_tx_usrp.py b/challenges/gotenna/gotenna_pro_tx_usrp.py
new file mode 100755
index 0000000..06982dd
--- /dev/null
+++ b/challenges/gotenna/gotenna_pro_tx_usrp.py
@@ -0,0 +1,322 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+
+#
+# SPDX-License-Identifier: GPL-3.0
+#
+# GNU Radio Python Flow Graph
+# Title: Gotenna Pro Tx Usrp
+# GNU Radio version: 3.10.5.0
+
+from gnuradio import blocks
+from gnuradio import digital
+from gnuradio import filter
+from gnuradio.filter import firdes
+from gnuradio import gr
+from gnuradio.fft import window
+import sys
+import signal
+from argparse import ArgumentParser
+from gnuradio.eng_arg import eng_float, intx
+from gnuradio import eng_notation
+from gnuradio import uhd
+import time
+import gotenna_packet
+import math
+
+
+
+
+class gotenna_pro_tx_usrp(gr.top_block):
+
+    def __init__(self, baud_rate=9600, callsign='VE3IRR', counter_num=0, device_addr='', frequency=450000000, message='Hello world!', message_type='BROADCAST', publickey_data='base64key', recipient_gid=1234567891, sender_gid=1234567890):
+        gr.top_block.__init__(self, "Gotenna Pro Tx Usrp", catch_exceptions=True)
+
+        ##################################################
+        # Parameters
+        ##################################################
+        self.baud_rate = baud_rate
+        self.callsign = callsign
+        self.counter_num = counter_num
+        self.device_addr = device_addr
+        self.frequency = frequency
+        self.message = message
+        self.message_type = message_type
+        self.publickey_data = publickey_data
+        self.recipient_gid = recipient_gid
+        self.sender_gid = sender_gid
+
+        ##################################################
+        # Variables
+        ##################################################
+        self.samp_per_sym = samp_per_sym = 4
+        self.offset = offset = 250000
+        self.interp = interp = 480000 // baud_rate
+        self.taps = taps = firdes.gaussian(1.0, samp_per_sym, 0.5, 64)
+        self.samp_rate = samp_rate = baud_rate * samp_per_sym * interp
+        self.packets = packets = gotenna_packet.encode_pro_broadcast_packets(message_type, counter_num, sender_gid, recipient_gid, callsign, message, publickey_data)
+        self.fsk_deviation_hz = fsk_deviation_hz = {2400: 400, 4800: 750, 9600: 1100}[baud_rate]
+        self.data_chan = data_chan = 2
+        self.control_chan = control_chan = 2
+        self.center_freq = center_freq = frequency - offset
+
+        ##################################################
+        # Blocks
+        ##################################################
+        self.uhd_usrp_sink_0 = uhd.usrp_sink(
+            ",".join((device_addr, "")),
+            uhd.stream_args(
+                cpu_format="fc32",
+                args='',
+                channels=list(range(0,1)),
+            ),
+            '',
+        )
+        self.uhd_usrp_sink_0.set_samp_rate(samp_rate)
+        self.uhd_usrp_sink_0.set_time_unknown_pps(uhd.time_spec(0))
+
+        self.uhd_usrp_sink_0.set_center_freq(center_freq, 0)
+        self.uhd_usrp_sink_0.set_antenna("TX/RX", 0)
+        self.uhd_usrp_sink_0.set_gain(70, 0)
+        self.rational_resampler_xxx_0 = filter.rational_resampler_ccc(
+                interpolation=interp,
+                decimation=1,
+                taps=[],
+                fractional_bw=0)
+        self.interp_fir_filter_xxx_0 = filter.interp_fir_filter_fff(1, taps)
+        self.interp_fir_filter_xxx_0.declare_sample_delay(0)
+        self.digital_map_bb_0 = digital.map_bb([-3, -1, 3, 1, 0])
+        self.blocks_vector_source_x_2 = blocks.vector_source_f([offset], True, 1, [])
+        self.blocks_vector_source_x_1 = blocks.vector_source_c([1], True, 1, [])
+        self.blocks_vector_source_x_0 = blocks.vector_source_b(gotenna_packet.pro_gfsk_symbols(packets), False, 1, [])
+        self.blocks_vco_c_1 = blocks.vco_c((baud_rate * samp_per_sym), (2 * math.pi * fsk_deviation_hz), 1.0)
+        self.blocks_vco_c_0 = blocks.vco_c(samp_rate, (2*math.pi), 0.9)
+        self.blocks_repeat_2 = blocks.repeat(gr.sizeof_float*1, samp_per_sym)
+        self.blocks_repeat_1 = blocks.repeat(gr.sizeof_float*1, (8 * samp_per_sym * interp))
+        self.blocks_repeat_0 = blocks.repeat(gr.sizeof_gr_complex*1, (8 * samp_per_sym))
+        self.blocks_multiply_xx_1 = blocks.multiply_vcc(1)
+        self.blocks_multiply_xx_0 = blocks.multiply_vcc(1)
+        self.blocks_char_to_float_0 = blocks.char_to_float(1, 1)
+
+
+        ##################################################
+        # Connections
+        ##################################################
+        self.connect((self.blocks_char_to_float_0, 0), (self.blocks_repeat_2, 0))
+        self.connect((self.blocks_multiply_xx_0, 0), (self.rational_resampler_xxx_0, 0))
+        self.connect((self.blocks_multiply_xx_1, 0), (self.uhd_usrp_sink_0, 0))
+        self.connect((self.blocks_repeat_0, 0), (self.blocks_multiply_xx_0, 1))
+        self.connect((self.blocks_repeat_1, 0), (self.blocks_vco_c_0, 0))
+        self.connect((self.blocks_repeat_2, 0), (self.interp_fir_filter_xxx_0, 0))
+        self.connect((self.blocks_vco_c_0, 0), (self.blocks_multiply_xx_1, 1))
+        self.connect((self.blocks_vco_c_1, 0), (self.blocks_multiply_xx_0, 0))
+        self.connect((self.blocks_vector_source_x_0, 0), (self.digital_map_bb_0, 0))
+        self.connect((self.blocks_vector_source_x_1, 0), (self.blocks_repeat_0, 0))
+        self.connect((self.blocks_vector_source_x_2, 0), (self.blocks_repeat_1, 0))
+        self.connect((self.digital_map_bb_0, 0), (self.blocks_char_to_float_0, 0))
+        self.connect((self.interp_fir_filter_xxx_0, 0), (self.blocks_vco_c_1, 0))
+        self.connect((self.rational_resampler_xxx_0, 0), (self.blocks_multiply_xx_1, 0))
+
+
+    def get_baud_rate(self):
+        return self.baud_rate
+
+    def set_baud_rate(self, baud_rate):
+        self.baud_rate = baud_rate
+        self.set_fsk_deviation_hz({2400: 400, 4800: 750, 9600: 1100}[self.baud_rate])
+        self.set_interp(480000 // self.baud_rate)
+        self.set_samp_rate(self.baud_rate * self.samp_per_sym * self.interp)
+
+    def get_callsign(self):
+        return self.callsign
+
+    def set_callsign(self, callsign):
+        self.callsign = callsign
+        self.set_packets(gotenna_packet.encode_pro_broadcast_packets(self.message_type, self.counter_num, self.sender_gid, self.recipient_gid, self.callsign, self.message, self.publickey_data))
+
+    def get_counter_num(self):
+        return self.counter_num
+
+    def set_counter_num(self, counter_num):
+        self.counter_num = counter_num
+        self.set_packets(gotenna_packet.encode_pro_broadcast_packets(self.message_type, self.counter_num, self.sender_gid, self.recipient_gid, self.callsign, self.message, self.publickey_data))
+
+    def get_device_addr(self):
+        return self.device_addr
+
+    def set_device_addr(self, device_addr):
+        self.device_addr = device_addr
+
+    def get_frequency(self):
+        return self.frequency
+
+    def set_frequency(self, frequency):
+        self.frequency = frequency
+        self.set_center_freq(self.frequency - self.offset)
+
+    def get_message(self):
+        return self.message
+
+    def set_message(self, message):
+        self.message = message
+        self.set_packets(gotenna_packet.encode_pro_broadcast_packets(self.message_type, self.counter_num, self.sender_gid, self.recipient_gid, self.callsign, self.message, self.publickey_data))
+
+    def get_message_type(self):
+        return self.message_type
+
+    def set_message_type(self, message_type):
+        self.message_type = message_type
+        self.set_packets(gotenna_packet.encode_pro_broadcast_packets(self.message_type, self.counter_num, self.sender_gid, self.recipient_gid, self.callsign, self.message, self.publickey_data))
+
+    def get_publickey_data(self):
+        return self.publickey_data
+
+    def set_publickey_data(self, publickey_data):
+        self.publickey_data = publickey_data
+        self.set_packets(gotenna_packet.encode_pro_broadcast_packets(self.message_type, self.counter_num, self.sender_gid, self.recipient_gid, self.callsign, self.message, self.publickey_data))
+
+    def get_recipient_gid(self):
+        return self.recipient_gid
+
+    def set_recipient_gid(self, recipient_gid):
+        self.recipient_gid = recipient_gid
+        self.set_packets(gotenna_packet.encode_pro_broadcast_packets(self.message_type, self.counter_num, self.sender_gid, self.recipient_gid, self.callsign, self.message, self.publickey_data))
+
+    def get_sender_gid(self):
+        return self.sender_gid
+
+    def set_sender_gid(self, sender_gid):
+        self.sender_gid = sender_gid
+        self.set_packets(gotenna_packet.encode_pro_broadcast_packets(self.message_type, self.counter_num, self.sender_gid, self.recipient_gid, self.callsign, self.message, self.publickey_data))
+
+    def get_samp_per_sym(self):
+        return self.samp_per_sym
+
+    def set_samp_per_sym(self, samp_per_sym):
+        self.samp_per_sym = samp_per_sym
+        self.set_samp_rate(self.baud_rate * self.samp_per_sym * self.interp)
+        self.set_taps(firdes.gaussian(1.0, self.samp_per_sym, 0.5, 64))
+        self.blocks_repeat_0.set_interpolation((8 * self.samp_per_sym))
+        self.blocks_repeat_1.set_interpolation((8 * self.samp_per_sym * self.interp))
+        self.blocks_repeat_2.set_interpolation(self.samp_per_sym)
+
+    def get_offset(self):
+        return self.offset
+
+    def set_offset(self, offset):
+        self.offset = offset
+        self.set_center_freq(self.frequency - self.offset)
+        self.blocks_vector_source_x_2.set_data([self.offset], [])
+
+    def get_interp(self):
+        return self.interp
+
+    def set_interp(self, interp):
+        self.interp = interp
+        self.set_samp_rate(self.baud_rate * self.samp_per_sym * self.interp)
+        self.blocks_repeat_1.set_interpolation((8 * self.samp_per_sym * self.interp))
+
+    def get_taps(self):
+        return self.taps
+
+    def set_taps(self, taps):
+        self.taps = taps
+        self.interp_fir_filter_xxx_0.set_taps(self.taps)
+
+    def get_samp_rate(self):
+        return self.samp_rate
+
+    def set_samp_rate(self, samp_rate):
+        self.samp_rate = samp_rate
+        self.uhd_usrp_sink_0.set_samp_rate(self.samp_rate)
+
+    def get_packets(self):
+        return self.packets
+
+    def set_packets(self, packets):
+        self.packets = packets
+        self.blocks_vector_source_x_0.set_data(gotenna_packet.pro_gfsk_symbols(self.packets), [])
+
+    def get_fsk_deviation_hz(self):
+        return self.fsk_deviation_hz
+
+    def set_fsk_deviation_hz(self, fsk_deviation_hz):
+        self.fsk_deviation_hz = fsk_deviation_hz
+
+    def get_data_chan(self):
+        return self.data_chan
+
+    def set_data_chan(self, data_chan):
+        self.data_chan = data_chan
+
+    def get_control_chan(self):
+        return self.control_chan
+
+    def set_control_chan(self, control_chan):
+        self.control_chan = control_chan
+
+    def get_center_freq(self):
+        return self.center_freq
+
+    def set_center_freq(self, center_freq):
+        self.center_freq = center_freq
+        self.uhd_usrp_sink_0.set_center_freq(self.center_freq, 0)
+
+
+
+def argument_parser():
+    parser = ArgumentParser()
+    parser.add_argument(
+        "--baud-rate", dest="baud_rate", type=intx, default=9600,
+        help="Set Baud rate [default=%(default)r]")
+    parser.add_argument(
+        "--callsign", dest="callsign", type=str, default='VE3IRR',
+        help="Set Sender callsign [default=%(default)r]")
+    parser.add_argument(
+        "--counter-num", dest="counter_num", type=intx, default=0,
+        help="Set Counter [default=%(default)r]")
+    parser.add_argument(
+        "--device-addr", dest="device_addr", type=str, default='',
+        help="Set UHD device address [default=%(default)r]")
+    parser.add_argument(
+        "--frequency", dest="frequency", type=eng_float, default=eng_notation.num_to_str(float(450000000)),
+        help="Set Frequency [default=%(default)r]")
+    parser.add_argument(
+        "--message", dest="message", type=str, default='Hello world!',
+        help="Set Message [default=%(default)r]")
+    parser.add_argument(
+        "--message-type", dest="message_type", type=str, default='BROADCAST',
+        help="Set type [default=%(default)r]")
+    parser.add_argument(
+        "--publickey-data", dest="publickey_data", type=str, default='base64key',
+        help="Set Sender Public Key [default=%(default)r]")
+    parser.add_argument(
+        "--recipient-gid", dest="recipient_gid", type=intx, default=1234567891,
+        help="Set Recipient GID [default=%(default)r]")
+    parser.add_argument(
+        "--sender-gid", dest="sender_gid", type=intx, default=1234567890,
+        help="Set Sender GID [default=%(default)r]")
+    return parser
+
+
+def main(top_block_cls=gotenna_pro_tx_usrp, options=None):
+    if options is None:
+        options = argument_parser().parse_args()
+    tb = top_block_cls(baud_rate=options.baud_rate, callsign=options.callsign, counter_num=options.counter_num, device_addr=options.device_addr, frequency=options.frequency, message=options.message, message_type=options.message_type, publickey_data=options.publickey_data, recipient_gid=options.recipient_gid, sender_gid=options.sender_gid)
+
+    #def sig_handler(sig=None, frame=None):
+    #    tb.stop()
+    #    tb.wait()
+
+    #    sys.exit(0)
+
+    #signal.signal(signal.SIGINT, sig_handler)
+    #signal.signal(signal.SIGTERM, sig_handler)
+
+    tb.start()
+
+    tb.wait()
+
+
+if __name__ == '__main__':
+    main()
diff --git a/flags.txt.ci b/flags.txt.ci
index 6a87785..2fcf093 100644
--- a/flags.txt.ci
+++ b/flags.txt.ci
@@ -5,3 +5,4 @@ testflagsfile,1660312800,1660496400
 3,SDR_ASK_1,The Silence of the Lambs was filmed in Pittsburgh Pennsylvania.,ask,,,60,90,ham_440,,
 4,POCSAG_RX,The Clock That Went Backward,pocsag,198468,,60,90,444500,,
 5,LRS_RX,-s 20 -p 238 -pf 1,lrs,,,60,90,467750,,
+6,GOTENNA_PRO,RFCTF{gotenna_pro_test},gotenna_pro,"--callsign RFCTF --sender-gid 1234567890 --recipient-gid 1234567891 --baud-rate 9600 --message-type BROADCAST --counter-num 0",,60,90,450000,,