Radioberry output power to full blast

[Samuel Lourenço]

Hi,

After the last Raspi OS update I was forced to update the driver, since the output power got somewhat lower. However, right after the Radioberry driver update, the output power went full blast, as in pedal to the metal, pegged at 23 dBm. The tune drive and PA settings are ignored, and the issue persisted after updating piHPSDR as well.

I recall that the PA settings were glitchy, because the power would back down after certain points. Now it is pegged to the max, beyond it was able before. The Tx output is connected to my 10 W amplifier from 60 dBm, which accepts 0 dBm, and thus I'm using a 20 dB attenuator. I assume that some IAMP setting was unlocked, but it is not healthy for the Radioberry nor for the amplifier, and the latter can go to 25 W momentarily when tuning, which is not great.

By the way, on a slightly different topic, I'm in the process of building a 1.2 W amp for the Radioberry, and I'm designing it to accept 12 dBm, and gain is set to roughtly 9 V/V, so as to output 31 dBm. My rationale for such high gain is that it provides more flexibility, enabling compatibility with many versions of software and hardware, and excessive gain can always be removed by the use of attenuators or in software. However, it would be essential for this to be ironed out. The output power should be limited to 10 W, and the tuning power even less so.

I need help, and by the way, the current script for piHPSDR installation does not compile, so I'm still using the old script.

Kind regards, Samuel Lourenço

[pa3gsb]

Hi Samuel,

I have seen multiple complaints for the same issue.

It is not clear at least for me what your setup is .

https://github.com/pa3gsb/Radioberry-2.x/wiki/Radioberry-Registration   you can find a way to describe your setup in terms of installed software .

This makes it possible to help you better.

73 Johan

PA3GSB

Op maandag 15 december 2025 om 09:59:18 UTC+1 schreef samuel.f...@gmail.com:

[Samuel Lourenço]

Hi,

The main issue here is that it seems to me that the driver is not in a stable state. I would suggest creating a stable production driver for RPi 4 and another one for RPi 5, and let the development do itself on other repositories.

Anyway, I'm using RPi 4 and Aursinc Radioberry with CL25, and an external 10 W amplifier from 60 dBm, the last one controlled by a relay board of my creation.

Before the update, the PA gain controls per band worked somewhat. Now they don't. I ask what will get broken next? I have a suggestion: make it so that my board never goes to TX, or gets stuck in Tx, while at it. :)

Anyway, I can't have a radio that changes everytime. And I'm considering forking the driver and do my own edits, including ripping the spyware part completely off.

Kind regards, Samuel Lourenço

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[pa3gsb]

Samuel,

Thanks for your positive feedback.

I have added some improvements and maybe some new issues but anyway enjoy.

73 Johan

PA3GSB

Op dinsdag 16 december 2025 om 09:20:19 UTC+1 schreef samuel.f...@gmail.com:

[Samuel Lourenço]

Hi,

Meanwhile, how can I apply the workaround? IIRC, the script does not keep the source code. It would be essential to set the output power to a constant value for all bands. My objective is to have 20 dBm to the amplifier, so it can output 10 W for all bands.

Kind regards, Samuel Lourenço

[Samuel Lourenço]

Hi,

I've decided to download and reinstall the driver and piHPSDR. The issue is now fixed and I can adjust the output power on each band. Now I can output 10 W and tune it to 5W, which is great! Thanks!

Kind regards, Samuel Lourenço