He led operation to scramble communication device (14)

I believe the answer is:

radiotelephone

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'communication device' is the definition.
The definition and answer can be both man-made objects as well as being singular nouns.
Perhaps there's an association between them I don't understand?

'he led operation to scramble' is the wordplay.
'to scramble' indicates an anagram.
'he'+'led'+'operation'='heledoperation'
'heledoperation' is an anagram of 'RADIOTELEPHONE'.

Can you help me to learn more?

I've seen this clue in The Times.

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