The following is an except from a 2019 lecture I delivered on Northern Ireland pirate radio 1969-1975.
https://ibhof.blogspot.com/2019/03/northern-ireland-pirate-radio-1969-1975.html?spref=fb&fbclid=IwAR0ZjAjuKJyhjdD_8V3EZqJWh547Hyvaahw9j--SuCFpc2_xNN-8PvIzQk8