Indeed, even many of the devices here could be running on a Pi internally... or are running Linux on some other Arm SoC or a suite of microcontrollers. One of

Indeed, even many of the devices here could be running on a Pi internally... or are running Linux on some other Arm SoC or a suite of microcontrollers. One of the new audio processors (full size rack) actually runs a small cluster of CM4s for local audio processing, a remote control system, and something else (can't remember), but the convergence from all these discrete specialized boxes to one or a few general PCs is slow to happen. Some of that is down to proprietary stuff, but a lot is inertia, and being allergic to less-tested solutions. The Inovonics box could be replaced by Stereo Tool [1] on a Pi—and indeed it is in some lower budget installs! A lot of radio engineers are also hams and so are willing to experiment sometimes, especially in lower power stations where the stakes aren't as high. But if you're dealing with one of the "big" stations or ownership that has the IBM mentality (nobody got fired for choosing IBM), they tend to stick to the tried and tested audio chain, with more robust equipment with a long history of support. [1] https://www.thimeo.com/stereo-tool/ https://www.thimeo.com/stereo-tool/