Boomer thought I'd get a kick out of what this dude writes about.
https://www.radioworld.com/columns-and-views/workbench/when-a-standard-isnt That really wide-banded DSP portable? (Past the non-standard 3.5mm plugs.)
https://www.aliexpress.us/w/wholesale-HanRongDa-HRD%2525252d757-Multiband-Radio.html?spm=a2g0o.home.search.0 Now, what he's talking about is the 900MHz point-to-point STL links that many radio stations still use. As long as it's still analog FM, yeah, that could work in a pinch. BTW, my Kenwood TH-F6A Handy Talkie could do this as well, albeit, not broadcast quality audio, but just voice COMM quality. OH... About the covering of 3.5mm multi-conductor plugs? Many portable analog video units, like DVD players, camcorders, DV decks, 8mm decks, etc., used these for L/R stereo audio and video out. Different subject, from that DSP wide-band portable. However, looking at that portable, it's just AM / FM, and no SSB that I could see. Still, might be neat to have.