A History of Short Words

From the New York Times Crossword Puzzle

ONAIR

Tue, 23 Apr '24
Sign at a radio station
Sun, 11 Feb '24
___ personality
Mon, 25 Sep '23
Currently broadcasting
Thu, 27 Jul '23
Studio caution
Fri, 2 Dec '22
[We're broadcasting! Don't interrupt!]
Sun, 6 Nov '22
How you might walk after getting great news
Wed, 17 Aug '22
Sign in a radio booth
Wed, 26 Jan '22
Studio sign
Fri, 24 Sep '21
[Live!]
Sun, 12 Sep '21
"We're live!" studio sign
Sat, 20 Mar '21
Sign that indicates "Quiet!"