There was a time when a ham radio set up sported many dials and switches and probably quite a few boxes as well. Computers have changed all that. Some transceivers now have just a few buttons or are ...
It's most useful if you want to use OpenWebRX to cover wide spectrum, for example 0MHz-500MHz. For public purposes it's reither not recomended to expose more than one band per single SDR device. But ...