- A valve radio - much too big for listening in bed. There was usually one in a household (if that), in pride of place in the living room (not a child's bedroom).
- A crystal set - very small, and with no power source. The power for the earphones came from the signal itself, so the sound was very faint and fluctuated. The user had to 'tune in' - adjust the tuning dial - constantly.
That gives the background; but the actual words sound rather strange. Internet lyrics are notorious. 'I intent at' is a form of words I've never met before; perhaps it means 'I was intent on' [that is, I was trying hard].
PS This (Regency TR-1 Transistor Radio Facts and Figures) dates 'the world's first pocket radio' (using transistors) to 1954, so in 1952 the singer must have been using a Crystal radio - Wikipedia, the free encyclopedia
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