From 1962 through 2006, he was a play-by-play voice of Minnesota Twins radio broadcasts, becoming the lead announcer in 1967 after Ray Scott left to work exclusively with CBS.

His mellow baritone voice and laid-back demeanor were well loved by Twins fans and formed a well balanced team with the more excitable and emotional style of his longtime broadcast partner John Gordon.

[citation needed] Carneal was for many years known (and introduced as such by Gordon at the beginning of each game) as "The Voice of the Twins".

Beginning in 2002, Carneal scaled back his workload to providing play-by-play for half of Minnesota's home games.

Until 2007, Carneal worked in partnership with fellow radio commentators John Gordon and Dan Gladden.