Q2

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Q2 or Q-2 may refer to:

A mechanical siren manufactured by Federal Sign & Signal. The "Q" class of siren is the largest electromechanical siren made by Federal. It used to be used on ambulances and fire trucks because of the extreme sound output. Now it is primarily used by fire trucks because of the power consumption. Other emergency vehicles now use electronic sirens.

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Media and broadcasting

Transportation

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