Re: help request with simple live mic tx

[Stefano Zorzanello]

Here again, struggling with another attempt to transmit in AM instead of 
FM, I've copied/modified the grc file found at 
https://wiki.gnuradio.org/index.php/Simulation_example:_AM_transmitter_and_receiver

I get the following error line, which I don't understand as it seems to 
me identical to the original simulation file

===========

Executing: /usr/bin/python3 -u /home/pi/Desktop/SDR STUFF/top_block.py

  File "/home/pi/Desktop/SDR STUFF/top_block.py", line 105
    self.uhd_usrp_sink_0.set_normalized_gain(500m, 0)
                                                ^
SyntaxError: invalid syntax

>>> Done (return code 1)

=============

Any suggestion? thank you for your time and patience

Stefano

system:

HackRF one

Raspberrypi + usb card for input

GRC 3.8.2.0





Il 30/03/2021 08:23, Marcus Müller ha scritto:
> Why are you doing short to float, if the output of the audio source is already 
> float?
>
>
> On 30.03.21 01:47, Stefano Zorzanello wrote:
> > 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

AM-tx02.grc
Description: Text document