Glass ready for old receiver (7,3)

I believe the answer is:

crystal set

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'old receiver' is the definition.
'crystal set' can be an answer for 'receiver' (I've seen this before). I am not sure about the 'old' bit.

'glass ready' is the wordplay.
'glass' becomes 'crystal' (crystal is a kind of glass).
'ready' becomes 'set' (set can mean ready or prepared).
'crystal'+'set'='CRYSTAL SET'

'for' acts as a link.

Can you help me to learn more?

(Other definitions for crystal set that I've seen before include "Radio" , "used to receive long ago" , "Receiver" , "Matching glasses" , "matching items of glassware?" .)

I've seen this clue in The Daily Express.

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