This technical note describes a simple experimental method for determining the blinking frequency of our physical universe – called the Lighthouse Frequency. This unique frequency has been characterized in previous papers. The method utilizes commercially available hardware. Possible limitations and error sources are discussed. Using a method of engineering estimates, it is concluded that the blinking frequency of our universe is approximately 1.1 THz (1.1 trillion cycles per second). Each reader must comprehend that our physical universe literally blinks off and on, approximately 1 trillion times every second.