Borys Dyczko

Make sure that the sample rate and step are correct. Follow the manual here https://github.com/shajen/rtl-sdr-scanner-cpp#custom-sample-rate-step-and-frequency-range Sample rate 20 MHz should work fine with HackRf but with steps 625, 1250, 2500...

I found that there is some problem with `hackrf` and `sample rate` above `10 MHz`. I'm working on it. I don't know if problem is with my device or with...

It's was fixed. Please update to latest version. Remember to update docker images, `config.json` and `docker-compose.yml`.

It's was fixed. Please update to latest version. Remember to update docker images, `config.json` and `docker-compose.yml`. If any problem with timezone settings, see https://github.com/shajen/rtl-sdr-scanner-cpp#timezone

Please update to the latest version and check if the error still occurs. If yes, please follow the instructions here and upload the full log file: https://github.com/shajen/rtl-sdr-scanner-cpp/tree/devel#debugging

In your case frequency `438.250 MHz` is probably in use by something. Many different devices (e.g. temperature sensor, camera, garage door) uses it. Please add frequency to ignore in config.json...

Interesting. Can you show your `config.json` file? Please test on the latest version.

I tested it and your config works ok with my rtl-sdr scanner on latest version. The frequencies on your screenshots are different that you posted in config.

Pass full path to `config.json`. Probably the path should be like this: ``` ExecStart=/home/pi/rtl-sdr-scanner-cpp/build/auto-sdr /home/pi/rtl-sdr-scanner-cpp/config.json ```

It will work slowly, because every switch between frequencies range takes about ~100 ms. So you should definitely choose as few frequency ranges as possible to speed it up. But...