Cool helicopter units from Tri Lite (Tripp Lite). These are the LR-4 units that feature 4 x 6 volt, 30 watt GE 4515 bulbs mounted on a rotating metal plate. Located on the plate are 4 separate adjustable heads that allow many angles and positions of the bulbs. The heads rotate at the same speed as a Mark XII beacon (Approximately 40 RPM) as they use the same base plate and motor / belt assembly. These classic units are tough and will run almost forever. Great units made in the US.
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