Random sudden RX gain jump

[Fl Pohl]

Hi there!

Has anyone experienced this problem?

It happens whenever I change the VFO very quickly, the spectrum RF screen 

jumps from -100 db, this is where my noise floor is, to almost maximum,

the waterfall gets pink. It happens if I change the band too.

Stopping the radioberry service and loading it back again does not solve the problem

I have to reboot the Raspberry PI.

I have used Linhpsdr, SdrConsole and PowerSDR OpenHDSDR, the problem happens with all of them.

Raspberry PI is 4 and using the development release because I'm building a preamp.

I have included the screenshots

Thank you in advance

Flavio VE2ZFP

[pa3gsb]

Flavio,

Please use the register option; so i can view your settings:

http://www.pa3gsb.nl/radioberry/api/read.php

Which version of RPI linux are you running??

Do you switch of the SPI ?

73 Johan

PA3GSB

Op zondag 3 oktober 2021 om 14:34:57 UTC+2 schreef fpohl...@hotmail.com:

[Fl Pohl]

I'll do that.

Thank you

[Fl Pohl]

Sorry clicked on post message by accident.

PRETTY_NAME="Raspbian GNU/Linux 10 (buster)"

NAME="Raspbian GNU/Linux"

VERSION_ID="10"

VERSION="10 (buster)"

VERSION_CODENAME=buster

ID=raspbian

ID_LIKE=debian

SPI? no, I did not, to be honest with you I don't know what that is.

Thank you

On Sunday, October 3, 2021 at 11:32:44 AM UTC-4 pa3gsb wrote:

[Fl Pohl]

My Radioberry has been registered just now and its online.

Thank you Johan 

VE2ZFP

On Sunday, October 3, 2021 at 11:32:44 AM UTC-4 pa3gsb wrote:

[Radioberry]

For SPI:

https://github.com/pa3gsb/Radioberry-2.x/wiki/Raspberry-PI-Setup

You have not installed the latest version:

cd /tmp
wget https://raw.githubusercontent.com/pa3gsb/Radioberry-2.x/master/SBC/rpi-4/releases/dev/radioberry_install.sh
sudo chmod +x radioberry_install.sh
./radioberry_install.sh

Please give it a try?

73 Johan

PA3GSB

Op zondag 3 oktober 2021 om 17:59:56 UTC+2 schreef fpohl...@hotmail.com:

[Fl Pohl]

Hi Johan,

I'll give it a try

Thank you so much for you help

73 Flavio

[Ronald Nicholson]

Yes.  I have seen it, but I was running an older dev release:

(echo " Gateware version 72.5" , echo " Driver version 0.8" , echo " Firmware version 2021.01.17")

Setting the VFO twice seemed to corrupt the sample rate being delivered by the Protocol 1 UDP.

Haven't checked yet to see if it's been fixed in newer releases.

73,

Ron

n6ywu

[Ramakrishnan Muthukrishnan]

Yes, I have SPI disabled and I still get these random gain jumps
especially at higher sample rates.

Another (probably unrelated) way to corrupt Rx Gain setting is the first
time press of PTT. At that point, the Rx Gain values are corrupted and
then touching the slider restores it.

This has been the case with the last stable release too.

73
Ram VU3RDD

On 03/10/2021 22:49, Radioberry wrote:
>
> For SPI:
>
> https://github.com/pa3gsb/Radioberry-2.x/wiki/Raspberry-PI-Setup

> --
> You received this message because you are subscribed to the Google
> Groups "Radioberry" group.
> To unsubscribe from this group and stop receiving emails from it, send
> an email to radioberry+...@googlegroups.com
> <mailto:radioberry+...@googlegroups.com>.
> To view this discussion on the web visit
> https://groups.google.com/d/msgid/radioberry/80296af4-c3ac-474a-92a8-4e4b85c32f97n%40googlegroups.com
> <https://groups.google.com/d/msgid/radioberry/80296af4-c3ac-474a-92a8-4e4b85c32f97n%40googlegroups.com?utm_medium=email&utm_source=footer>.


--
Ramakrishnan

[Fl Pohl]

Hi Johan,

I'm installing the new firmware right now, it's asking the following:

Install CL016 or CL025 radioberry version: 1 = CL016 or 2 = CL025? 

I think its 2 but let me know.

By the way the SPI was already disabled.

Testing the new firmware now, I haven't noticed the problem yet but what I 

have noticed is the CPU load is much lower than before and I forgot to mention that

before that was some RX audio cutoffs or stuttering at times, still here but it seems better than before.

Does it use one core at the time? I'm getting only 40 % now and it was   75 %

with the previous firmware.

Thanks

On Sunday, October 3, 2021 at 1:19:53 PM UTC-4 Radioberry wrote:

[Radioberry]

Hi  Flavio

Tnx for reporting.

Yes the latest dev will perform beter; using 8 bits for RX and TX is done via SPI; giving some nice perf improvement; nice you noticed it.

The RB is capable of using 2 types of FPGA ; CL016 , a little smaller / cheaper (when starting RB; i do not know if this is still valid?) and the CL025 .

Depending on your FPGA you have to select the right one.... if you had selected the wrong  version your RB would not work... so good choice.

73 Johan

PA3GSB

Op dinsdag 5 oktober 2021 om 07:50:29 UTC+2 schreef fpohl...@hotmail.com:

[Fl Pohl]

Hi Ron,

Thank you

Flavio

[Fl Pohl]

Hi Johan,

I've tested yesterday with the new firmware, the cutouts are gone and the RX level jumps too.

Everything seemed to be fine now.

One last thing,  Did you buy the QRP Labs 10 watt amplifier right,? does it work out of the box, I mean, does the Radioberry have enough

output power to drive the amplifier?

Thank you very much.

Flavio

[pa3gsb]

Flavio,

Good to hear that it is working for you.

The 10W of QRP labs is a nice kit to build... see the group messages... there are others who did the build.

Have fun

73 Johan

PA3GSB

Op vrijdag 8 oktober 2021 om 09:33:01 UTC+2 schreef fpohl...@hotmail.com:

[s.hi...@gmx.net]

Hi all,

the seems to be the same affect I had, and posted in a previous topic:

https://groups.google.com/g/radioberry/c/r3FHOYPAg44

=> Same steps to run into the problem, same effect, and same recovery action needed...

I will update my Radioberry also to latest version, and check if it is solved for my setup too.

Thank you!

73's Best Regards Sven

[Brad Jeffries]

Had similar issues.  Turned out it was power integrity.  The supply rail on the Radioberry was dropping well below 5V DC never put a scope on to observe the transient behavior. 

https://groups.google.com/g/radioberry/c/IPSOAriss-c

G0UIL  pointed me to the power integrity at the Radioberry.  I grabbed the same regulator he was using XY-3606.  I use the USB port to power the PI and the screw terminals to jump a direct connection at the point where 5V enters the Radioberry.   This made the setup rock solid.   One thing I noticed was IC201 the upstream LDO for the FPGA gets quite warm.  I put a stick on heatsink on this LDO.

73

Brad