 In the mid-1970s the Coast Guard decided to remove the Fresnel lens and test a DCB airport style beacon.The beacon only lasted a few years until it was replaced by a much smaller AGA-acrylic revolving beacon that provided the same range as the DCB, but with a 150-watt bulb instead of the 1,000-watt DCB bulb.In 1998, the Coast Guard replaced the AGA with a newer Vega rotating beacon.