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JvanKatwijk / qt-dab

Qt-DAB, a general software DAB (DAB+) decoder with a (slight) focus on showing the signal
http://www.sdr-j.tk
GNU General Public License v2.0
285 stars 63 forks source link

RTL-SDR #273

Open kens500 opened 1 year ago

kens500 commented 1 year ago

On Fedora 36 I'm using an RTL-SDR without problem with the rtl-sdr driver from the repository with the GQRX application.

I was hoping to try out qt-dab but that application does not find the RTL-SDR.

lsusb shows it as "Realtek Semiconductor Corp. RTL2838 DVB-T" with a RTL2838UHIDIR chip. The r820t and rtl2832 modules are loaded.

Any suggestions??

andimik commented 1 year ago

Have you tried to use rtl_tcp?

JvanKatwijk commented 1 year ago

If you are using Linux then some text is written if you start the appimage from a command window, what does it say

On Fri, Sep 16, 2022, 10:24 PM kens500 @.***> wrote:

On Fedora 36 I'm using an RTL-SDR without problem with the rtl-sdr driver from the repository with the GQRX application.

I was hoping to try out qt-dab but that application does not find the RTL-SDR.

lsusb shows it as "Realtek Semiconductor Corp. RTL2838 DVB-T" with a RTL2838UHIDIR chip. The r820t and rtl2832 modules are loaded.

Any suggestions??

— Reply to this email directly, view it on GitHub https://github.com/JvanKatwijk/qt-dab/issues/273, or unsubscribe https://github.com/notifications/unsubscribe-auth/ACCPHQGMNWE5X2BZN4URJGDV6TJQLANCNFSM6AAAAAAQOUORHU . You are receiving this because you are subscribed to this thread.Message ID: @.***>

kens500 commented 1 year ago

Have you tried to use rtl_tcp?

Yes although I suspect I need to be running a programme that makes the rtl-sdr available over IP?

kens500 commented 1 year ago

--- If you are using Linux then some text is written if you start the appimage --- from a command window, what does it say

SOLVED - It was failing to find librtlsdr.so but librtlsdr.so.0 was there. I simply copied librtlsdr.so.0 to librtlsdr.so. I'll do it properly with a link later.

kens500 commented 1 year ago

That's an impressive bit of software. Thank you

Jeroen88 commented 1 year ago

@JvanKatwijk could you help me too with the RTL2832 USB stick on Ubuntu? This is what I get when I start the software in a terminal:

main: Detected system language "en_US"
main: Set language "en_US"
main: Error while loading language specifics "en_US" use English "en_GB" instead
ALSA lib pcm_dsnoop.c:641:(snd_pcm_dsnoop_open) unable to open slave
ALSA lib pcm_dmix.c:1089:(snd_pcm_dmix_open) unable to open slave
ALSA lib pcm.c:2642:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.rear
ALSA lib pcm.c:2642:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.center_lfe
ALSA lib pcm.c:2642:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.side
Cannot connect to server socket err = No such file or directory
Cannot connect to server request channel
jack server is not running or cannot be started
JackShmReadWritePtr::~JackShmReadWritePtr - Init not done for -1, skipping unlock
JackShmReadWritePtr::~JackShmReadWritePtr - Init not done for -1, skipping unlock
Cannot connect to server socket err = No such file or directory
Cannot connect to server request channel
jack server is not running or cannot be started
JackShmReadWritePtr::~JackShmReadWritePtr - Init not done for -1, skipping unlock
JackShmReadWritePtr::~JackShmReadWritePtr - Init not done for -1, skipping unlock
ALSA lib pcm_oss.c:377:(_snd_pcm_oss_open) Unknown field port
ALSA lib pcm_oss.c:377:(_snd_pcm_oss_open) Unknown field port
ALSA lib pcm_usb_stream.c:486:(_snd_pcm_usb_stream_open) Invalid type for card
ALSA lib pcm_usb_stream.c:486:(_snd_pcm_usb_stream_open) Invalid type for card
ALSA lib pcm_dmix.c:1089:(snd_pcm_dmix_open) unable to open slave
Cannot connect to server socket err = No such file or directory
Cannot connect to server request channel
jack server is not running or cannot be started
JackShmReadWritePtr::~JackShmReadWritePtr - Init not done for -1, skipping unlock
JackShmReadWritePtr::~JackShmReadWritePtr - Init not done for -1, skipping unlock
Hostapis: 2

Api 0 is ALSA

Api 1 is OSS

Investigating Device 0

 (output):item 1 wordt stream 0 (HD-Audio Generic: HDMI 0 (hw:0,3))

Investigating Device 1

Investigating Device 2

Investigating Device 3

 (output):item 2 wordt stream 3 (hdmi)

Investigating Device 4

 (output):item 3 wordt stream 4 (pulse)

Investigating Device 5

 (output):item 4 wordt stream 5 (default)

added items to combobox
Suggested size for outputbuffer = 0
stream opened
stream started
ALSA lib pcm.c:8526:(snd_pcm_recover) underrun occurred
ALSA lib pcm.c:8526:(snd_pcm_recover) underrun occurred
ALSA lib pcm.c:8526:(snd_pcm_recover) underrun occurred
ALSA lib pcm.c:8526:(snd_pcm_recover) underrun occurred
ALSA lib pcm.c:8526:(snd_pcm_recover) underrun occurred
ALSA lib pcm.c:8526:(snd_pcm_recover) underrun occurred
ALSA lib pcm.c:8526:(snd_pcm_recover) underrun occurred
unknown device, failing

The first thing I try is 'Select Input' but the RTL-SDR is not showing. Would be very kind if you can give me some guidance! :)

andimik commented 1 year ago

What does rtl_test tell you? If you even not get any output, you are missing some packages, see manual.

Are you using the AppImage or have you compiled it from the sources?

Jeroen88 commented 1 year ago

Hi @andimik 

Found 1 device(s):
  0:  Realtek, RTL2838UHIDIR, SN: 00000001

Using device 0: Generic RTL2832U OEM
Detached kernel driver
Found Rafael Micro R828D tuner
Supported gain values (29): 0.0 0.9 1.4 2.7 3.7 7.7 8.7 12.5 14.4 15.7 16.6 19.7 20.7 22.9 25.4 28.0 29.7 32.8 33.8 36.4 37.2 38.6 40.2 42.1 43.4 43.9 44.5 48.0 49.6 
[R82XX] PLL not locked!
Sampling at 2048000 S/s.

Info: This tool will continuously read from the device, and report if
samples get lost. If you observe no further output, everything is fine.

Reading samples in async mode...
Allocating 15 zero-copy buffers
lost at least 36 bytes

I am using the AppImage. Do the ALSA and jack errors mean that something is wrong with the audio setup as well? Or is the software just trying different options?

I am using a cheap Aliexpress clone and ordered an "official" device yesterday. But the device I have now is working with Universal Radio Hacker: I can get a spectrum and I can decode a FSK-2 packet, so the device seems to work although it does not show up in de 'device' tab of Qt-dab.

JvanKatwijk commented 1 year ago

have you tried "dabstick"

Op ma 6 mrt 2023 om 17:26 schreef Jeroen88 @.***>:

Hi @andimik https://github.com/andimik

Found 1 device(s): 0: Realtek, RTL2838UHIDIR, SN: 00000001

Using device 0: Generic RTL2832U OEM Detached kernel driver Found Rafael Micro R828D tuner Supported gain values (29): 0.0 0.9 1.4 2.7 3.7 7.7 8.7 12.5 14.4 15.7 16.6 19.7 20.7 22.9 25.4 28.0 29.7 32.8 33.8 36.4 37.2 38.6 40.2 42.1 43.4 43.9 44.5 48.0 49.6 [R82XX] PLL not locked! Sampling at 2048000 S/s.

Info: This tool will continuously read from the device, and report if samples get lost. If you observe no further output, everything is fine.

Reading samples in async mode... Allocating 15 zero-copy buffers lost at least 36 bytes

I am using the AppImage. Do the ALSA and jack errors mean that something is wrong with the audio setup as well? Or is the software just trying different options?

I am using a cheap Aliexpress clone and ordered an "official" device yesterday. But the device I have now is working with Universal Radio Hacker: I can get a spectrum and I can decode a FSK-2 packet, so the device seems to work although it does not show up in de 'device' tab of Qt-dab.

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Jeroen88 commented 1 year ago

Yes I tried it just now. After a few minutes one radio station pops up in the main window, RADIONL2 Zeeland, but no sound. Maybe I have two problems? Bad reception (antenna?????) and no the right audio setup?

Your help is appreciated!

Jeroen88 commented 1 year ago

Yesterday I had the same result with rtl_tcp

JvanKatwijk commented 1 year ago

Assuming you are running 5.2 you can see at the control/config widget the successrate in decoding the FIC/FIG, if that is less than 100 percent your feception is weak. Setting the "technical widget' visible by clikcing on the "details" button you see the qualities of the decoding of the selected service Again, values less than 100 percent show missing parts in the audio stream

Op ma 6 mrt 2023 om 18:01 schreef Jeroen88 @.***>:

Yes I tried it just now. After a few minutes one radio station pops up in the main window, RADIONL2 Zeeland, but no sound. Maybe I have two problems? Bad reception (antenna?????) and no the right audio setup?

Your help is appreciated!

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andimik commented 1 year ago

After a few minutes one radio station pops up

Where in NL are you living? 5B is transmitted in the South West only.

grafik

Have you tried NPO on 12C? This is available all over the country.

Jeroen88 commented 1 year ago

@andimik I live in the South West. The problem is: I can not select any station because no station s shown. Sometimes that one radio station pops up, after hitting scan, NPO is not shown.

Jeroen88 commented 1 year ago

@JvanKatwijk Frame, RS, AAC all zero. MOT bar is red. I can not select any radio station...

In the 'history' I now see three stations: 5B Radio Rijnmond, 5B Omroep West, 5B VAHON Radio. If I click each it says: insufficient data for this program.

JvanKatwijk commented 1 year ago

try channel 12C, that should be good. There are transmitters in Goes en Toosendaal

Op ma 6 mrt 2023 om 21:43 schreef Jeroen88 @.***>:

@JvanKatwijk https://github.com/JvanKatwijk Frame, RS, AAC all zero. MOT bar is red. I can not select any radio station...

In the 'history' I now see three stations: 5B Radio Rijnmond, 5B Omroep West, 5B VAHON Radio. If I click each it says: insufficient data for this program.

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andimik commented 1 year ago

NPO is not shown.

Even when you select 12C?

Jeroen88 commented 1 year ago

12C? Where can I select it...? The 'service' window is empty. Although. now, by magic and clicking a few times on 'presets' 10 radio stations are appearing. If I select one, I can see it in the main window too, but no sound. I see a spectrum, also in the tii window.

JvanKatwijk commented 1 year ago

Channel selector

On Mon, Mar 6, 2023, 10:22 PM Jeroen88 @.***> wrote:

12C? Where can I select it...? The 'service' window is empty. Although. now, by magic and clicking a few times on 'presets' 10 radio stations are appearing. If I select one, I can see it in the main window too, but no sound. I see a spectrum, also in the tii window.

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Jeroen88 commented 1 year ago

I found it, if I select it, all my channels disappear and the window is above 'presets' is empty again.

JvanKatwijk commented 1 year ago

As the manual (and the tooltip) states, the frame above the preset button shows the services found in the currently selected channel. If you select channel 12C then after a few seconds some names should be shown. The quality of the signal is shown two ways, first in the control widget - if madevisible byclicking the most left of the four buttons at the bottom of the main widget for the 5.2 version, second by making the spectrum scope vsisible (by touching the spectrum widget on the control/config widget) Even better, if you touch the button labeled "corre;ation" on the config/control widget then - if there are transmitters - one of more peaks

It might be helpful to glance thought the manual

Op ma 6 mrt 2023 om 22:39 schreef Jeroen88 @.***>:

I found it, if I select it, all my channels disappear and the window is above 'presets' is empty again.

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WIHDIA commented 1 year ago

Do check the settings.

afbeelding

73 Kind regards Met vriendelijke groeten

Herman Wijnants

My logblog Belgium editor fmlist.org

Jeroen88 commented 1 year ago

@JvanKatwijk yes I do agree that I should read the manual and ofcourse I did. The problem is that I have no reference how it should work and what to expect because I did not have a normal operation yet, e.g. that the services should appear within seconds when you select a channel. In my case they do not appear, or a few after a long time.

I still have two problems:

@WIHDIA I know how to select the device now. rtl_tcp works, and dabstick also I believe.

Thnx again for all the help!

andimik commented 1 year ago

Please check the spectrum diagram. It will immediately show you if you need to improve a) the antenna or b) the settings (gain).