Autostart "Start DSP"

[Ionogram Juliusruh]

Hi all,

I am new to Gqrx. Is there a way to autostart "Start DSP" (Ctrl+D) when Gqrx starts?

Thanks

Roland

[Roger David Powers]

Apparently 'xdotool' can be used for this, but perhaps not from some startup environments:

https://groups.google.com/g/gqrx/c/dWHsvQyP4cM/m/vJJsax2UAAAJ

https://groups.google.com/g/gqrx/c/CsFDV6dwTdM/m/i0W-Q2PYAQAJ

Regards,

RDP

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[Ionogram Juliusruh]

It would be nice if this could be implemented in Gqrx as an Option

[Cary Honeywell]

The xdotool worked for me. I asked the question about autostarting dsp (several times) and this is the only time I found an answer. Thanks for asking the question.

_ Cary _

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[Ionogram Juliusruh]

I am using a headless system. GQRX and WSJTX being started by  /etc/xdg/lxsession/LXDE-pi/autostart. Unfortunately xdotool did not work with autostart.

Is Gqrx still actively developed? Last release from Dec-2020

[Ionogram Juliusruh]

Ok just noticed Gqrx 2.14.5 was released a couple of hours ago. So yes it is still actively developed, thanks for that! I hope the autostart DSP feature will be implemented in a future release.

[Ionogram Juliusruh]

It is working for me

- Starting GQRX from autostart

- using xdotool to start DSP

cat /etc/xdg/lxsession/LXDE-pi/autostart

@lxpanel --profile LXDE-pi

@pcmanfm --desktop --profile LXDE-pi

@gqrx

@wsjtx

@lxterminal -e "/home/pi/start_gqrx.sh"

@xscreensaver -no-splash

cat /home/pi/start_gqrx.sh

#!/bin/bash

sleep 10

gqrxWindow=$(xdotool search --name "Gqrx( )")

xdotool windowactivate  --sync $gqrxWindow key ctrl+d

[Dirk Lison]

or use netcat and send a command to start DSP:

echo "U DSP 1" | nc -i1 -N localhost 7356

[btjust...@gmail.com]

Thanks for the netcat suggestion.  "-i1" is not needed, and "N" is invalid now.  This works on Linux using Wayland.  Wayland apparently doesn't support xdotools.

With gqrx-scan extracted to the /home/$USER folder and working along with Gqrx bookmarks tagged, the bash script code at the bottom will:

1. Open Gqrx.
2. Start the SDR.
3. Scan frequencies with gqrx-scan.

I have multiple versions of this bash script saved as Aircraft.sh, EMS.sh, Marine.sh, and so on.  Change "Aircraft" in Line 10 with the tag of the frequencies you want to scan.  Make sure to make each .sh bash script file you create executable (I use Step 2 here).  The following is "Aircraft.sh":

#!/bin/bash
# Open Gqrx.
gqrx &
sleep 5
# Start SDR.
echo "U DSP 1" | nc localhost 7356
sleep 5
# Start scanning frequencies with gqrx-scan (https://gitlab.com/khaytsus/gqrx-scan).
cd /home/$USER/gqrx-scan-master/
./gqrx-scan --delaylevel=-50 --delaytime 10 --pause 0.25 --tags "Aircraft" --type gqrxfile --wait