It receives signals from a girl about ten (7)

I believe the answer is:

antenna

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'it receives signals' is the definition.
The definition suggests a singular noun which matches the answer.

'a girl about ten' is the wordplay.
'a girl' becomes 'anna' ().
'about' means one lot of letters goes inside another.
'anna' enclosing 'ten' is 'ANTENNA'.

'from' is the link.

Can you help me to learn more?

(Other definitions for antenna that I've seen before include "Feature of dish" , "Feeling part" , "Transmitting aerial" , "receiver" , "sensitive feeler" .)

I've seen this clue in The Globe and Mail.

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