UK TV Licensing

I think it was called SSTV back then, no?

No I did SSTV back in 1975. SSTV is slow scan TV, that is used for sending still pictures with an 8 second frame transmit time. In those pre computer days you displayed them on a long persistence phosphor CRT.

This was real fast scan TV at 450MHz ish, using a TV camera I built myself mainly from parts available in the stores at University. It had a 1" vidicon tube and a lens from an old SLR camera, and a digital time base built in a tabico tin to shield it. It worked entirely off 12V so I could run in from my car. I had to have a separate TV call sign on top of by existing ham license call sign. And yes I had to pay for the license to transmit.