FREQ
Set to 2 different clues across 2 published puzzles, most often “Radio no.” — The New York Times, Sunday, 21 October 2007.
4 letters
Every clue on record, most used first
- Radio no.once
The New York Times — Sunday, 21 October 2007
- Part of UHF: Abbr.once
The New York Times — Wednesday, 21 February 2001