Radiberry receiver deaf.

[SNAIL]

I don't have signal generator to measure sensitivity of Radioberry but it's like a deaf. Almost no stations on all bands. I have 3 Radiberry boards. All of them are behave identically. I did try 3 different PIHPSDR versions there is some difference but not much. My old Yaesu 707 is 100 times better on the same antenna. 

Tried on all three Radioberry boards

 pIHPSDR by John Melton g0orx/n6lyt

build 2025 06 02 v2 08-rc1 includes MIDI 

DL1YCF PiHPSDR built 2025 02-03 Version 2.5-dirty

PiHPSDR by John Melton g0orx/n6lyt build 2025-06-02 v2 0.8-rc1 includes GPIO MIDI LOCALCW - this one doesn't work, red line on waterfall.

Appreciate any suggestions how to check what is wrong. 

[Joey G.]

I believe you are using the same LPF as me since you suggested it but have you bypassed it and connected an antenna directly to the RB?  Reason I ask is I noticed if you run receive through it as well and have the wrong band selected, it kills the receive signal.  Also, you could try using the Radioberry across a network to say SDR Console to see if it's the software.  

73

Joe

K5BHD

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[SNAIL]

No change in receiving with BPF or with antenna directly connected to Radioberry. The other thig I forgot to mention is ghost voices all across the bands. It sounds like whisper voices. Same as receiving, no changes with BPF or without. 

[pa3gsb]

Hi,

The AD9866 does contain an RX amplifier. In pihpsdr you can control the rf gain.  

Can you show a picture of your pihpsdr ?

73 Johan

PA3GSB

Op donderdag 24 juli 2025 om 01:47:38 UTC+2 schreef snailex...@gmail.com:

[SNAIL]

RF gain doesn't change anything except noise floor level is rising in audio and on waterfall.  

[pa3gsb]

the signal path from sma connector rx to the  AD9866 seems not ok.   

Signal goes through anti aliasing filter to the protection diodes to the transformer... somehere in that path there is an issue.

Did you buid it yourself? C403 is 100p  i had once a homebrewer who installed a wrong delivered 100n ; with the same effect!

Return the product to the reseller or do some measurements 

Hope this helps.

73 Johan

PA3GSB

 

Op donderdag 24 juli 2025 om 16:51:48 UTC+2 schreef snailex...@gmail.com:

[Malcolm Bay]

Hi All,

I have the exact same issue, so very interested if anyone has found a solution yet.

I was thinking broadcast station interference although no powerful source nearby that I'm aware of.

I'm running DL1YCF-PiHPSDR version 2024-12-05 current.dirty.

Otherwise my Radioberry is working perfectly, AFAIK.

(My setup = Radioberry/Pi4/5" touch screen/N7DDC ATU/QRP Labs LPFs switched by I2C/QRP Labs 10W PA/70W IRF530 PA)

73
Malc
M0MBO

On 24/07/2025 05:22, SNAIL wrote:

The other thig I forgot to mention is ghost voices all across the bands. It sounds like whisper voices. Same as receiving, no changes with BPF or without. 

-- 
Malcolm Bay
07730 810522
malc...@gmail.com
malco...@malcomm.com

[Paulh002]

Which samplerate do you use? Has the pi any cooling? Maybe you can share some more details of your setup

73,

Paul PA0PHH 

Op do 24 jul. 2025 22:31 schreef Malcolm Bay <malc...@gmail.com>:

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[Malcolm Bay]

Hi Paul,

Well I've tried different sample rates and the 'ghost voices' are still there.
And same with no antenna connected!
But generally inaudible in QSO, so not a huge problem.

Yes, the Pi and RB are fan cooled.

Photo showing internals...
Any specifc setup details let me know.

73
Malc
M0MBO

[SNAIL]

Im back with report after some investigation. I don't have antenna for 160 or 80 m bands so tested only 40/20/15/10 meters. Sensitivity degrades on higher frequency bands. Cooling Pi-4 and Radioberry board doesn't make difference.  All three Radioberry boards, two from Aursinc and one from China manufacturer for European market behave absolutely identically. 

[Paulh002]

I will do some measurements, have 2 radioberries. An old one and one bought recently. 

Do you use bandpass filters ? In my transceiver I have for each band a bandpass filter.

73,

Paul 

Op vr 25 jul 2025 om 23:40 schreef SNAIL <snailex...@gmail.com>:

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[SNAIL]

Currently BPF is disconnected. Just bare Radioberry. But no differences noticed with BPF in use. Actually, I ordered BPF to get away ghost voices, but it does not work. Frankly, ghost voices not all the time or on all bands. Looking to reinstall OS, Radioberry driver and PIHPSDR and see what happens.

Thank Paulh.

[Paulh002]

Made a quick video of measuring the sensitivity of the radioberry at 28 Mhz

https://youtu.be/83px28yDDhg

The sensitivity is about -120 dbm that is about 0.22 uV (+/- 2 or 3 db)

73,

Paul

Op za 26 jul 2025 om 01:51 schreef SNAIL <snailex...@gmail.com>:

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[SNAIL]

Reinstalled OS and Radioberry on spare SD card. Nothing good to report. The signal on waterfall is weird comparing to what it was before. On many bands ghost signals like someone rookie play with CW with straight key every 6.5 kHz. The beacon station near me is decoding now weird as well. 

Can't attach pictures unfortunately, message too long. 

Pauhl what OS and PIHPSDR do you use in YouTube video? Want to make last try before throwing everything in garbage can. 

Thank you.

[Paulh002]

I am not using PIHPSDR I have build my own software.

OS is raspberry pi os 64 bit (I switch of the graphical layer so only cli)

You can check it here https://github.com/paulh002/sdrberry

Op zondag 27 juli 2025 om 03:59:58 UTC+2 schreef SNAIL:

[Joey G. (Bonehead)]

I'm using G0ORX/N6LYT V 2.5 with GPIO MIDI SATURN.  Is that one you've already tried?

[Paulh002]

I never used other software than my own. I wanted to develop my own SDR project, like people who build there own transceiver :)

With all issues and problems you can get but that was the fun of it.

TechMinds made review of it. You can see it here https://youtu.be/Y5Jd29SA8go?si=ZIfjw2nEaA3smLtD

Op zondag 27 juli 2025 om 09:56:27 UTC+2 schreef Joey G. (Bonehead):

[pa3gsb]

Finding the problem we need to come to the root cause of the problem.

I have compiled a gateware version with a debug signal at 5.907 MHz

This rules out the frontend and will show if the other components are working.

Hereby a picture of the how it should look like.  

I have attached a CL016 and a CL025 version .

- Copy the relevant version into the /lib/firmware folder and rename the file into radioberry.rbf.

In a command window:

- sudo systemctl stop radioberry

- sudo modprobe -r radioberry

- sudo modprobe radioberry

- sudo radioberry

Please give the details after executing sudo radioberry

I like to see the gateware version!

goodluck and let us know please provide some printscreens and or loggings.

73 Johan

PA3GSB

Op donderdag 24 juli 2025 om 01:47:38 UTC+2 schreef snailex...@gmail.com:

I don't have signal generator to measure sensitivity of Radioberry but it's like a deaf. Almost no stations on all bands. I have 3 Radiberry boards. All of them are behave identically. I did try 3 different PIHPSDR versions there is some difference but not much. My old Yaesu 707 is 100 times better on the same antenna. 

[SNAIL]

After sudo radioberry i got

 Radioberry V2.0

Build version is 2022.01.24

Radioberry gateware version is 73 -3