Am also not sure about 39, did have the feline answer but think that refers to early radio users, radio hams were people who talked to each other over the airwaves. Please can you give me a hint for 54, think everyone else must have got this.
tin lizzie 54 last 6 letters word beginning with u which means the only one or very unusual first 4 letters abbreviation of a russian - sort of. Jazz Yes gossip is what I put but can't remember why now! Is 69 the same word as something a baby plays with? Think I need a few days off from this quiz, suffering from brain freeze but I love it.