Since getting a USB SDR dongle a few years ago, I started experimenting with GNU Radio, and got a better SDR, and more recently a NanoVNA. I've made recordings

Since getting a USB SDR dongle a few years ago, I started experimenting with GNU Radio, and got a better SDR, and more recently a NanoVNA. I've made recordings of a swath of frequencies a few megahertz wide directly to disk in the past. The fact that we're now talking about saturating everything takes this way out of my price range. I maintain an interest in this technology, but doubt I'll ever get my hands on it.