QuotePlay with: "brightness_offset": 0,

this was the Point thanks i have set it to -5 and it run

Lower the gain setting, and or change receivers.json to make it less bright.

All docs are here: https://github.com/Steven9101/NovaSDR/tree/main/docs

See this doc: https://github.com/Steven9101/NovaSDR/blob/main/docs/CONFIG.md

Play with: "brightness_offset": 0,

Or edit the gain.

my WebSDR is located in Germany near Eschwege

Locator JO51AF

http://wmk.nordhessenfunk.de

its a small SDR

can anybody tell me what can i do per default that the waterfall is not yellow on my SDR?

it will only run, when i enable the "Auto Adjust" and i get the blue background
this is on the Config

{
  "receivers": [
    {
      "id": "rx0",
      "input": {
        "accelerator": "none",
        "audio_compression": "flac",
        "audio_sps": 12000,
        "brightness_offset": 0,
        "defaults": {
          "frequency": -1,
          "modulation": "FM"
        },
        "driver": {
          "antenna": "Sirio GPE27 5/8",
          "channel": 0,
          "device": "driver=rtlsdr, label=Generic RTL2832U OEM :: 00000001, manufacturer=RTLSDRBlog, product=Blog V4, serial=00000001, tuner=Rafael Micro R828D",
          "format": "cf32",
          "agc": false,
          "gain": 30.0,
          "kind": "soapysdr"
        },
        "fft_size": 131072,
        "frequency": 27500000,
        "signal": "iq",
        "smeter_offset": 0,
        "sps": 2048000,
        "waterfall_compression": "zstd",
        "waterfall_size": 1024
      },
      "name": "11m RTL-SDR Blog V4"
    },


thx..

See here.....

https://www.novasdr.fun/index.php/topic,27

it run .. i have disabled it .. the main problem was the old node and rust .. but this is standard on a LTS Ubuntu version .. i have add the repo for node and add rust as a newer night build on the user account ..

It would be nice if it were developed on stable, then people might not have so many problems... Above all, you need to know a little bit about it to be able to do that.

If you reuse a system that had Phantom before, it won't compile. Use this instead.

git clone --recursive https://github.com/Steven9101/NovaSDR.git ./nova-src

Go into the nova-src and try to compile.

cargo build -p novasdr-server --release --features "soapysdr,clfft"

For other stuff like OpenCL etc, see the docs.

Now go into frontend dir, but this one can fail.

npm ci && npm run build && cd ..

If it fails, you need to update modules...with commands below.

nvm list

Take latest stable version

nvm install 22.21.1

Make sure you use it and make it default next time

nvm use 22.21.1
nvm alias default 22.21.1

npm will probably error too, so upgrade it to latest version

npm install npm@latest

With a little luck it will all compile, now you can setup the default install with:

./novasdr-server setup
Then it will write the default starting files, you can edit them manually later or run configure instead of setup.

Hopefully installing goes well now.

Few things, you probably had Phantom running before, so you needed to update npm and nvm engines to the latest.
Then the frontend will compile just fine.

The backend doesn't compile if you don't have a Vulkan GPU, as it's missing the Vulkan dependencies. You have selected NO on VKFFT.

I have reported this already to Steven. But he probably tested the beta on a NEW installation, not on excisting one.

Quote from: tuvok on 03 Jan 2026, 12:48 Hello, where can i do the following setting

disable chat

Edit the file config.json and set chat_enabled to false.

Quote from: tuvok on 03 Jan 2026, 12:48 enable squelch

I do not see a configuration reference pertaining to squelch yet.

Below is the configuration reference.

https://github.com/Steven9101/NovaSDR/wiki/CONFIG_REFERENCE