What does the cryptic crossword clue "With which to pick up a northern male voice on the radio? (7)" mean?

The definition is "With which to pick up". The wordplay uses a homophone (sounds like). A N TENNA (sounds like tenor) The answer is ANTENNA.

With which to pick up a northern male voice on the radio? (7)

Times Cryptic #28561 | 18 Down | 2023-03-27 flower