Finding available frequencies

Hi! I was interested in finding available frequencies in the range supported by my antenna array (about 300-1100 MHz). The way I was doing it earlier was to just change the frequency multiple times in settings.json and checking if a doa reading is available, but that seems to be very very slow. Is there a faster way I can sweep this frequency range and find valid frequencies?

It would be better to use a program like SDR# or SDR++ first to scan through the bands finding active signals that you would like to locate.

Kraken is intended to be used when you already know that you have a signal that you would like to locate.