diff --git a/firmware/tools/convert_C16_to_complex.grc b/firmware/tools/convert_C16_to_complex.grc
new file mode 100644
index 00000000..a46b15f2
--- /dev/null
+++ b/firmware/tools/convert_C16_to_complex.grc
@@ -0,0 +1,117 @@
+options:
+  parameters:
+    author: ''
+    category: Custom
+    cmake_opt: ''
+    comment: ''
+    copyright: ''
+    description: ''
+    gen_cmake: 'On'
+    gen_linking: dynamic
+    generate_options: no_gui
+    hier_block_src_path: '.:'
+    id: top_block
+    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: blocks_file_sink_0
+  id: blocks_file_sink
+  parameters:
+    affinity: ''
+    alias: ''
+    append: 'False'
+    comment: ''
+    file: /tmp/foo.cfile
+    type: complex
+    unbuffered: 'False'
+    vlen: '1'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [632, 140.0]
+    rotation: 0
+    state: enabled
+- name: blocks_file_source_0
+  id: blocks_file_source
+  parameters:
+    affinity: ''
+    alias: ''
+    begin_tag: pmt.PMT_NIL
+    comment: ''
+    file: Porpack_Capture.C16
+    length: '0'
+    maxoutbuf: '0'
+    minoutbuf: '0'
+    offset: '0'
+    repeat: 'False'
+    type: short
+    vlen: '1'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [64, 124.0]
+    rotation: 0
+    state: enabled
+- name: blocks_interleaved_short_to_complex_0
+  id: blocks_interleaved_short_to_complex
+  parameters:
+    affinity: ''
+    alias: ''
+    comment: ''
+    maxoutbuf: '0'
+    minoutbuf: '0'
+    swap: 'False'
+    vector_input: 'False'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [272, 156.0]
+    rotation: 0
+    state: enabled
+- name: blocks_multiply_const_vxx_0
+  id: blocks_multiply_const_vxx
+  parameters:
+    affinity: ''
+    alias: ''
+    comment: ''
+    const: ' 1.0 / 32768.0'
+    maxoutbuf: '0'
+    minoutbuf: '0'
+    type: complex
+    vlen: '1'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [448, 156.0]
+    rotation: 0
+    state: true
+
+connections:
+- [blocks_file_source_0, '0', blocks_interleaved_short_to_complex_0, '0']
+- [blocks_interleaved_short_to_complex_0, '0', blocks_multiply_const_vxx_0, '0']
+- [blocks_multiply_const_vxx_0, '0', blocks_file_sink_0, '0']
+
+metadata:
+  file_format: 1