That sounds like some fun weekends back in the 60's. Were you at the age to enjoy that? You are correct about the phrase rated in ampere-turns, but I just used turn ratio to simplify it. So your ampere turns might be 80 to 400. Your turns ratio would be 1:5. So your voltage would be the primary 1 to secondary 5. Now, your current would be the primary 5 to secondary 1.
