QtRadio - Operation

2011-11-27T15:19:58Z

Dl6kbg:

QtRadio - Operation

2011-11-27T15:18:36Z

Dl6kbg:

User:Dl6kbg

2011-11-27T10:59:35Z

Dl6kbg:

[[File:Dl6kbg.png|right|100px]]

Name is Oliver and i was born in 1967 and i am a licensed ham since 1991. All of the RIG's here are homebrewed:

<pre>
1 Softrock VHF RX Ensemble - 120-180 MHz
1 Softrock Ensemble RXTX 40-30-20-Meter
1 Softrock Ensemble RXTX 15-12-10-Meter
</pre>
<pre>
1 Mobo 4.3.4 with SDR-Widget and Filters for 80/40/30/20/15/10-Meters, HF-Projects LPF Board, POSWR Board (5 Watts on all Bands)
</pre>

On the desk now:

<pre>
1 UHFSDR which i will connect to a new SDR-Widget / Mobo
</pre>

I am living in the City of Dresden and the Antenna System is poor. I have Short Verticals from 20-10 Meter and a Magnetic Loop for 40-Meter.

73 Oliver DL6KBG, JO61UB

File:Dl6kbg.png

2011-11-27T10:43:09Z

Dl6kbg: DL6KBG presenting the Mobo/SDR-Widget and QtRadio at the local Ham Radio Club. (Nov 2011)

DL6KBG presenting the Mobo/SDR-Widget and QtRadio at the local Ham Radio Club. (Nov 2011)

User:Dl6kbg

2011-11-27T10:31:41Z

Dl6kbg: Created page with "Name is Oliver and i was born in 1967 and i am a licensed ham since 1991. All of the RIG's here are homebrewed: <pre> 1 Softrock VHF RX Ensemble - 120-180 MHz 1 Softrock Ensembl..."

Name is Oliver and i was born in 1967 and i am a licensed ham since 1991. All of the RIG's here are homebrewed:

<pre>
1 Softrock VHF RX Ensemble - 120-180 MHz
1 Softrock Ensemble RXTX 40-30-20-Meter
1 Softrock Ensemble RXTX 15-12-10-Meter
</pre>
<pre>
1 Mobo 4.3.4 with SDR-Widget and Filters for 80/40/30/20/15/10-Meters, HF-Projects LPF Board, POSWR Board (5 Watts on all Bands)
</pre>

On the desk now:

<pre>
1 UHFSDR which i will connect to a new SDR-Widget / Mobo
</pre>

I am living in the City of Dresden and the Antenna System is poor. I have Short Verticals from 20-10 Meter and a Magnetic Loop for 40-Meter.

73 Oliver DL6KBG, JO61UB

ToDo/- Wishlist

2011-11-26T00:55:48Z

Dl6kbg:

*add configurable ports to dspserver and qtradio
*add user/password login to dspserver

QtRadio - Operation

2011-11-26T00:12:28Z

Dl6kbg:

QtRadio - Operation

2011-11-25T23:57:02Z

Dl6kbg:

2011-11-14T19:24:55Z

Dl6kbg: /* Set audio levels with Pavucontrol */

== Set audio levels with Pavucontrol ==
To run the softrock server use:
<pre>
pavucontrol
</pre>

In order to install it, submit the following command:

<pre>
sudo apt-get install pavucontrol
</pre>

to choose the default pulse audio sources:
=== TX audio levels on the softrock server ===

[[File:Playback.png]]
=== RX audio levels on the softrock server ===

[[File:Recording.png]]

'''Make shure not to set the RX Audio level in the Recording Tab of pavucontrol to 100%. Otherwise you could have audio feedthrough from RX to TX and a distorted TX Audio. A level from 22% - 80% would be ok, but may vary on each system.'''

== Enable Network Mode ==
You also need to run pulse in network mode. Use:
<pre>
paprefs
</pre>

In order to install it, submit the following command:

<pre>
sudo apt-get install paprefs
</pre>

to set up network access by checking the various option boxes.

=== Pulseaudio Setup independant on a X-Server installation ===

Make sure you add your username to the following system groups:
<ul>
<li>pulse
<li>pulse-access
<li>audio
</ul>

Use the following commands: ($USER stands for current logged in user) 
<pre>
sudo adduser $USER pulse
sudo adduser $USER pulse-access
sudo adduser $USER audio
</pre>

Example, for the user dl6kbg the grup file must contain:
<pre>
grep dl6kbg /etc/group
...
audio:x:29:pulse,dl6kbg
pulse:x:119:dl6kbg
pulse-access:x:120:dl6kbg
...
</pre>
<pre>
sudo nano /etc/default/pulseaudio
</pre>

change settings to:

<pre>
PULSEAUDIO_SYSTEM_START=1
DISALLOW_MODULE_LOADING=0
</pre>

<pre>
sudo nano /etc/pulse/system.pa
</pre>

and add:

<pre>
load-module module-native-protocol-tcp auth-anonymous=1
</pre>

Restart pulseaudio:
<pre>
sudo /etc/init.d/pulseaudio restart
</pre>

or restart the system and fire up the softrock server.
Pulseaudio runs now in systemwide mode and your softrock server should be able to establish a connection
to your following dspserver.

== Configure Pulseaudio Daemon ==

In order to use 96000 or 192000, you will need to configure pulse audio by editing:
<pre>
/etc/pulse/daemon.conf
</pre>

Uncomment these settings and change it for your needs.

Example:
<pre>
default-sample-format = s24le
default-sample-rate = 192000
</pre>

== Tweak System for realtime performance ==

For realtime audio add the following to:
<pre>
/etc/security/limits.conf
</pre>

<pre>
@audio - rtprio 99
@audio - memlock unlimited
</pre>
and reboot and enjoy your system.

Pulseaudio Setup

2011-11-14T19:15:48Z

Dl6kbg:

== Set audio levels with Pavucontrol ==
To run the softrock server use:
<pre>
pavucontrol
</pre>

In order to install it, submit the following command:

<pre>
sudo apt-get install pavucontrol
</pre>

to choose the default pulse audio sources:
=== TX audio levels on the softrock server ===

[[File:Playback.png]]
=== RX adio levels on the softrock server ===

[[File:Recording.png]]

'''Make shure not to set the RX Audio level in the Recording Tab of pavucontrol to 100%. Otherwise you could have audio feedthrough from RX to TX and a distorted TX Audio. A level from 22% - 80% would be ok, but may vary on each system.'''

You also need to run pulse in network mode. Use:
<pre>
paprefs
</pre>

In order to install it, submit the following command:

<pre>
sudo apt-get install paprefs
</pre>

to set up network access by checking the various option boxes.

'''Pulseaudio Setup independant on a X-Server installation '''

Make sure you add your username to the following system groups:
<ul>
<li>pulse
<li>pulse-access
<li>audio
</ul>

Use the following commands: ($USER stands for current logged in user) 
<pre>
sudo adduser $USER pulse
sudo adduser $USER pulse-access
sudo adduser $USER audio
</pre>

Example, for the user dl6kbg the grup file must contain:
<pre>
grep dl6kbg /etc/group
...
audio:x:29:pulse,dl6kbg
pulse:x:119:dl6kbg
pulse-access:x:120:dl6kbg
...
</pre>
<pre>
sudo nano /etc/default/pulseaudio
</pre>

change settings to:

<pre>
PULSEAUDIO_SYSTEM_START=1
DISALLOW_MODULE_LOADING=0
</pre>

<pre>
sudo nano /etc/pulse/system.pa
</pre>

and add:

<pre>
load-module module-native-protocol-tcp auth-anonymous=1
</pre>

Restart pulseaudio:
<pre>
sudo /etc/init.d/pulseaudio restart
</pre>

or restart the system and fire up the softrock server.
Pulseaudio runs now in systemwide mode and your softrock server should be able to establish a connection
to your following dspserver.

In order to use 96000 or 192000, you will need to configure pulse audio by editing:
<pre>
/etc/pulse/daemon.conf
</pre>

Uncomment these settings and change it for your needs.

Example:
<pre>
default-sample-format = s24le
default-sample-rate = 192000
</pre>

For realtime audio add the following to:
<pre>
/etc/security/limits.conf
</pre>

<pre>
@audio - rtprio 99
@audio - memlock unlimited
</pre>
and reboot and enjoy your system.