Dear list,
as a newbie I ask you for your help with the attached file. For a
sound-installation purpose I'd like to transmit a weak signal, which is
generated live, over a particular FM frequency. In my attempt based on a
grc file found here
https://wiki.gnuradio.org/index.php/Simulation_example:_AM_transmitter_and_receiver
<https://wiki.gnuradio.org/index.php/Simulation_example:_AM_transmitter_and_receiver>
I get errors even if I change the vector lenght to 2 of [short to float]
and [multiply const] blocks, and I don't know what values to change in
order to make it work.
Any help is greatly appreciated,
thank you
stefano
system:
HackRF one
Raspberrypi + usb card for input
GRC 3.8.2.0
options:
parameters:
author: ''
category: Custom
cmake_opt: ''
comment: ''
copyright: ''
description: ''
gen_cmake: 'On'
gen_linking: dynamic
generate_options: qt_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: prompt
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: 915e6
states:
bus_sink: false
bus_source: false
bus_structure: null
coordinate: [712, 15]
rotation: 0
state: enabled
- name: samp_rate
id: variable
parameters:
comment: ''
value: '705600'
states:
bus_sink: false
bus_source: false
bus_structure: null
coordinate: [8, 160]
rotation: 0
state: enabled
- name: analog_wfm_tx_0
id: analog_wfm_tx
parameters:
affinity: ''
alias: ''
audio_rate: '32000'
comment: ''
fh: '-1.0'
max_dev: 75e3
maxoutbuf: '0'
minoutbuf: '0'
quad_rate: '640000'
tau: 75e-6
states:
bus_sink: false
bus_source: false
bus_structure: null
coordinate: [241, 186]
rotation: 0
state: enabled
- name: audio_source_0
id: audio_source
parameters:
affinity: ''
alias: ''
comment: ''
device_name: plughw:0,0
maxoutbuf: '0'
minoutbuf: '0'
num_outputs: '1'
ok_to_block: 'True'
samp_rate: '44100'
states:
bus_sink: false
bus_source: false
bus_structure: null
coordinate: [219, 5]
rotation: 0
state: true
- name: blocks_multiply_const_vxx_0
id: blocks_multiply_const_vxx
parameters:
affinity: ''
alias: ''
comment: ''
const: '32768'
maxoutbuf: '0'
minoutbuf: '0'
type: complex
vlen: '1'
states:
bus_sink: false
bus_source: false
bus_structure: null
coordinate: [464, 205]
rotation: 0
state: enabled
- name: blocks_multiply_const_vxx_1
id: blocks_multiply_const_vxx
parameters:
affinity: ''
alias: ''
comment: ''
const: '0.00003'
maxoutbuf: '0'
minoutbuf: '0'
type: float
vlen: '1'
states:
bus_sink: false
bus_source: false
bus_structure: null
coordinate: [568, 61]
rotation: 0
state: enabled
- name: blocks_short_to_float_0
id: blocks_short_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: [408, 61]
rotation: 0
state: enabled
- name: osmosdr_sink_0
id: osmosdr_sink
parameters:
affinity: ''
alias: ''
ant0: ''
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: ''
bb_gain0: '20'
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: 1e3
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: '10'
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: '20'
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: samp_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: [696, 254]
rotation: 0
state: enabled
- name: qtgui_sink_x_0
id: qtgui_sink_x
parameters:
affinity: ''
alias: ''
bw: samp_rate
comment: ''
fc: center_freq
fftsize: '2048'
gui_hint: ''
maxoutbuf: '0'
minoutbuf: '0'
name: '""'
plotconst: 'True'
plotfreq: 'True'
plottime: 'True'
plotwaterfall: 'True'
rate: '10'
showports: 'True'
showrf: 'True'
type: complex
wintype: firdes.WIN_BLACKMAN_hARRIS
states:
bus_sink: false
bus_source: false
bus_structure: null
coordinate: [696, 138]
rotation: 0
state: enabled
connections:
- [analog_wfm_tx_0, '0', blocks_multiply_const_vxx_0, '0']
- [audio_source_0, '0', blocks_short_to_float_0, '0']
- [blocks_multiply_const_vxx_0, '0', osmosdr_sink_0, '0']
- [blocks_multiply_const_vxx_0, '0', qtgui_sink_x_0, '0']
- [blocks_multiply_const_vxx_1, '0', analog_wfm_tx_0, '0']
- [blocks_short_to_float_0, '0', blocks_multiply_const_vxx_1, '0']
metadata:
file_format: 1
