Rx/Tx problem

[iulisan]

Hi. I installed this beautiful software folowing https://www.youtube.com/watch?v=Y5Jd29SA8go and none of my sdr's do rx or tx : RTL-SDR 2,3,4 , NOEELEC V5 , ADALM PLUTO , HACK RF. Where could be the problem ? Thank you.

[paulh002]

Please check the wiki page for troubleshooting instructions. If this doesn't work please share the steps you have performed. Error messages log files etc. Without this information I cannot help. 73, Paul Op wo 26 mrt 2025 om 13:15 schreef iulisan ***@***.***>:

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Hi. I installed this beautiful software folowing https://www.youtube.com/watch?v=Y5Jd29SA8go and none of my sdr's do rx or tx : RTL-SDR 2,3,4 , NOEELEC V5 , ADALM PLUTO , HACK RF. Where could be the problem ? Thank you. — Reply to this email directly, view it on GitHub <#50>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AIOBYUG7UZQGF5APL2NC2WD2WKD6XAVCNFSM6AAAAABZ2EOAUWVHI2DSMVQWIX3LMV43ERDJONRXK43TNFXW4OZYGEZTCNBWHA> . You are receiving this because you are subscribed to this thread.Message ID: ***@***.***>

[iulisan]

Thank you so much for the answer.
Well I follow all the steps from the video with no luck on multiple devices as I mentioned, I tested with fresh install for any of those : Adalm Pluto, RTL-SDR 3,4 , Noeelec V5 and Hack RF with no luck.
sdrberry.log

[iulisan]

My settings.
sdrberry_settings.txt

73! YO8SHP,Iulian

[paulh002]

Buna ziua,

The application is working correct, however there is no connection with the audio device. You need to connect an audio usb device and select it in the setup page

[iulisan]

Hi sir. Well i'm with this setup : RPI 4 , RTLSDR 4 , 7 inch touch V1 , USB headphones from Plantronics. What do you suggest to do? Do I need to plug in a usb card ? Thank you.

[paulh002]

The log indicates that the audio device cannot be found.
Try first in the setup page to select the audio device you want to use.
If that does not work, try a external usb audio device.

129 device: Default ALSA Device input 0 output 10000
130 device: bcm2835 Headphones (bcm2835 Headphones) input 0 output 8
131 device: Plantronics .Audio 655 DSP (USB Audio) input 2 output 2
No matching device found.

RtApi::openStream: input device ID is invalid.

ALSA lib pulse.c:242:(pulse_connect) PulseAudio: Unable to connect: Connection refused

Cannot open audio input stream

RtApiAlsa::probeDeviceInfo: snd_pcm_open (playback) error for device (hw:vc4hdmi0,0), Unknown error 524.


RtApiAlsa::probeDeviceInfo: snd_pcm_open (playback) error for device (hw:vc4hdmi1,0), Unknown error 524.

device name = Default ALSA Device
: maximum output channels = 10000
device name = bcm2835 Headphones (bcm2835 Headphones)
: maximum output channels = 8
device name = Plantronics .Audio 655 DSP (USB Audio)
: maximum output channels = 2
No matching device found.

RtApi::getDeviceInfo: deviceId argument not found.

audio device = 0 USB Audio Device samplerate 48000 channels 0

RtApi::openStream: a non-NULL output StreamParameters structure cannot have an nChannels value less than one.

ALSA lib pulse.c:242:(pulse_connect) PulseAudio: Unable to connect: Connection refused

Cannot open audio output stream
Connected to PCF8574(A) 56 
Cannot connect to 57 
Cannot connect to 32 
Cannot connect to 33 
Cannot connect to 63 
The framebuffer device was opened successfully.
800x480, 16bpp
The framebuffer device was mapped to memory successfully.
Input device name: "Plantronics Plantronics .Audio 655 DSP Consumer Control"
Input device name: "vc4-hdmi-0"
Input device name: "vc4-hdmi-0 HDMI Jack"
Input device name: "vc4-hdmi-1"
Input device name: "vc4-hdmi-1 HDMI Jack"
Input device name: "10-0038 generic ft5x06 (79)"
Touch device name: "10-0038 generic ft5x06 (79)"

RtApiAlsa::probeDeviceInfo: snd_pcm_open (playback) error for device (hw:vc4hdmi0,0), Unknown error 524.


RtApiAlsa::probeDeviceInfo: snd_pcm_open (playback) error for device (hw:vc4hdmi1,0), Unknown error 524.

[iulisan]

Thank you. So i can hear "something" BUT it is nothing inteligble . I tryied with an external sound card with no luck....somehow i think it is from some settings for SDR.....I just do not manage to solve without you.

[paulh002]

list you audio devices with aplay -l

pi@pi4:~ $ aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: Device [USB PnP Sound Device], device 0: USB Audio [USB Audio]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 1: vc4hdmi0 [vc4-hdmi-0], device 0: MAI PCM i2s-hifi-0 [MAI PCM i2s-hifi-0]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 2: vc4hdmi1 [vc4-hdmi-1], device 0: MAI PCM i2s-hifi-0 [MAI PCM i2s-hifi-0]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
pi@pi4:~ $

edit sdrberry_setting.cfg with prefered device

[Audio]
device = "USB PnP Sound Device"

Then try if it works

[iulisan]

Now I will try.

[iulisan]

Just nothing...

I have sound on headphones but I cannot "decode" anything.

[paulh002]

If you tune? You're tuned at the center there is no sound Op do 27 mrt. 2025 18:32 schreef iulisan ***@***.***>:

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Just nothing... 123.jpg (view on web) <https://github.com/user-attachments/assets/3c9d2fd6-99b6-4958-b50b-057eb7ded076> I have sound on headphones but I cannot "decode" anything. — Reply to this email directly, view it on GitHub <#50 (reply in thread)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AIOBYUATYM2DDTAYL7PXYUD2WQRZBAVCNFSM6AAAAABZ2EOAUWVHI2DSMVQWIX3LMV43URDJONRXK43TNFXW4Q3PNVWWK3TUHMYTENRUGQZTCNI> . You are receiving this because you commented.Message ID: ***@***.***>

[iulisan]

No luck.

[paulh002]

Then I would try an usb audio adapter. Op do 27 mrt. 2025 18:49 schreef iulisan ***@***.***>:

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1.jpg (view on web) <https://github.com/user-attachments/assets/1f0625dd-02dc-4a8a-b345-5c9ae85bceeb> No luck. — Reply to this email directly, view it on GitHub <#50 (reply in thread)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AIOBYUDG4YWD4WRNJJTAF532WQTY5AVCNFSM6AAAAABZ2EOAUWVHI2DSMVQWIX3LMV43URDJONRXK43TNFXW4Q3PNVWWK3TUHMYTENRUGQ2DSMY> . You are receiving this because you commented.Message ID: ***@***.***>

[iulisan]

Done that. I have sound but no "decode" from Adalm nor RTL. I'm speaking for 3 hams that we have the same problem here sir. Thank you.

[paulh002]

Please share the log output with only using an usb audio, and the pluto. I will check the pluto tonight to see if I can reproduce Op do 27 mrt. 2025 19:04 schreef iulisan ***@***.***>:

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Done that. I have sound but no "decode" from Adalm nor RTL. I'm speaking for 3 hams that we have the same problem here sir. Thank you. — Reply to this email directly, view it on GitHub <#50 (reply in thread)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AIOBYUHX2Y6XSKUDCJOTMML2WQVTDAVCNFSM6AAAAABZ2EOAUWVHI2DSMVQWIX3LMV43URDJONRXK43TNFXW4Q3PNVWWK3TUHMYTENRUGQ3DGMI> . You are receiving this because you commented.Message ID: ***@***.***>

[paulh002]

Can you try these settings in sdrberry_settings.cfg ?

[plutosdr]
audiobuffersize = "4096"
bandwidth = 1
dc = "0"
decimate = 0
rf-gain = "50"
if-gain = 27
samplerate = 1000
samplerate_tx = 1000
span = 1000

[paulh002]

https://youtu.be/z9-Auqoqo8k?si=udaJ5tGOL1-9idWq

[iulisan]

Ufffff nothing...later this day I will try a fresh install with this config that I send to you . What can be wrong here ?

Tested with 2 external sound cards.

sdrberry.log
sdrberry_settings.txt

Thank you for your patience. 73!

[paulh002]

Your audio device is not correct recognised

RtApi::getDeviceInfo: deviceId argument not found.

audio device = 0 USB PnP Sound Device samplerate 48000 channels 0

RtApi::openStream: a non-NULL output StreamParameters structure cannot have an nChannels value less than one.

It report not to have any audio channel
If you connect usb audio device do not connect any other audio device.
Also please share the output of aplay -l

aplay -l

[iulisan]

pi@sdrberry:~ $ aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: Headphones [bcm2835 Headphones], device 0: bcm2835 Headphones [bcm2835 Headphones]
Subdevices: 8/8
Subdevice #0: subdevice #0
Subdevice #1: subdevice #1
Subdevice #2: subdevice #2
Subdevice #3: subdevice #3
Subdevice #4: subdevice #4
Subdevice #5: subdevice #5
Subdevice #6: subdevice #6
Subdevice #7: subdevice #7
card 1: vc4hdmi0 [vc4-hdmi-0], device 0: MAI PCM i2s-hifi-0 [MAI PCM i2s-hifi-0]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 2: vc4hdmi1 [vc4-hdmi-1], device 0: MAI PCM i2s-hifi-0 [MAI PCM i2s-hifi-0]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 3: DSP [Plantronics .Audio 655 DSP], device 0: USB Audio [USB Audio]
Subdevices: 1/1
Subdevice #0: subdevice #0

[paulh002]

I think at the moment sdrberry does not support the plantronics headset. Those headsets have complex audio configuration. I have no such set available to test. Please use an external USB audio dongle and do not connect this headset. If you want to investigate the code your self you can open a pull request if you can fix it.

[iulisan]

Well...one of my external sound card seems to work BUT the signal is "fuzzy" , unintelligible

sdrberry.log
sdrberry_settings.txt

[paulh002]

I have done some tests with the pluto and indeed the sound is not good. Although in broadband FM it works.
It looks like the issue is caused by version differences of libiio and libad9361-iio.
What works for me at the moment is to clone libiio and checkout tag 0.21 and then clone and rebuild SoapySDRPluto.
You can give it a try.

[iulisan]

Well , so , me and my friends : YO8SCT , YO8JUR , YO8OY have the same configuration and in RX in WFM is working almost fine ,BUT no luck with TX , YET. So the HW are : Adalm Pluto , RPI 4 , 7 inch V1 , sound card no name (presume CM) .

sdrberry.log
sdrberry_settings.txt

In settings we are working with : decimate 16 on Adalm Pluto.

Please keep me posted. 73!

[paulh002]

WFM tx is not supported Op za 29 mrt. 2025 19:58 schreef iulisan ***@***.***>:

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Well , so , me and my friends : YO8SCT , YO8JUR , YO8OY have the same configuration and in RX in WFM is working almost fine ,BUT no luck with TX , YET. So the HW are : Adalm Pluto , RPI 4 , 7 inch V1 , sound card no name (presume CM) . IMG_20250329_163626.jpg (view on web) <https://github.com/user-attachments/assets/84d0d971-fdda-4cf1-acea-a416a813cb72> sdrberry.log <https://github.com/user-attachments/files/19522610/sdrberry.log> sdrberry_settings.txt <https://github.com/user-attachments/files/19522611/sdrberry_settings.txt> In settings we are working with : decimate 16 on Adalm Pluto. Please keep me posted. 73! — Reply to this email directly, view it on GitHub <#50 (reply in thread)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AIOBYUC5KKWSMDWWFD4KLTL2W3NK3AVCNFSM6AAAAABZ2EOAUWVHI2DSMVQWIX3LMV43URDJONRXK43TNFXW4Q3PNVWWK3TUHMYTENRWGM3TQMI> . You are receiving this because you commented.Message ID: ***@***.***>

[iulisan]

Hi Paul. Of course we are not interested in TX-ing on WFM ! I just said about Rx. Please keep me/us posted about what we do further with this project, to make it fully operational.
73! from me/us.

[paulh002]

The pluto SoapySDR driver behaves differently in TX mode than most other SoapySDR drivers. I will make some adjustments to support the pluto driver.

[paulh002]

I updated the tx code you can give it a try.

To use the build version use the following steps:

cd sdrberry
git pull
git switch build
git pull
rm -rf build
mkdir build
cd build
cmake ..
make -j4
sudo make install

[paulh002]

Please use for tx test 1000 Samples per second and no decimation. There are still some issues with it for the pluto.

[iulisan]

Hello Paul. we have RX , no problem there , but no TX. We are waiting for some update. Let's make it fully functional. 73! Paul.