An electrostatic discharge protection device including a modified lateral silicon-controlled rectifier and a voltage control circuit is provided. The earliest peak in the correlation response is then selected as the correct peak to compute a time delay. The antenna apparatus may move in a partial or continuous loop around the subject, toward or away from the subject, or in an opposite direction to an associated antenna apparatus. The switching program start message includes a switching program ID, a parameter for starting the switching program, and a parameter for starting the start target program. The membrane may be in the form of hollow fibers, wound fibers such as in a depth filter, or a flat sheet which may be formed into various configurations such as spiral filters, pleated filters, spiral pleated filters, disks and the like. The calibration procedure removes satellite dynamics by utilizing the respective satellite ephemeris data, estimates the change in receiver clock offset by means of GPS measurements, and acquires a set of two or more GLONASS pseudorange measurements while cycling a local oscillator in the receiver through a predetermined sequence of different frequencies.