Michael Bello's Megahertz, a millionaire and grade I winner, produced her first offspring, a Giant's Causeway   colt, Feb. 18. Megahertz (Pivotal--Heavenly Ray, by Rahy) is boarded at Mill Ridge Farm, owned by Alice Chandler and her husband, Dr. John Chandler, near Lexington.

Megahertz is booked to Bernardini.