Just for the sheer devilment of being able to say "told you I could" because someone told me "it's not possible", I've designed and am prototyping a cute little board to add SSB to a 27/81 CB chassis with a ROM locked PLL chip.
@ClintJayIO83 I wouldn't worry about it. Both of OfCom's enforcement officers are busy using ChatGPT to send vaguely threatening letters to every site on the Internet that displays the colour of human skin.
@jamesb I'm not worried about OFCOM, it's the "ackshually, I think you'll find" and the condemnation of those who ate the rule book, I have to consider my age because there's only so many times I can tell them to ".... off" before I get arthritis in my thumbs. Plus, SSB on those odd .00125 frequencies would be useless