WNG 689 Hebron, 162.450 MHz. NOAA All Hazards Weather Radio station WNG-689 serves northwest Indiana, including the Valpariaso, Hebron and Porter Township areas, from a 300 watt transmitter located in Hebron, IN. The nominal effective range of the transmitter is about 40 miles.
fluctuate (third-person singular simple present fluctuates, present participle fluctuating, simple past and past participle fluctuated) (intransitive) To vary irregularly; to swing. (intransitive) To undulate.
scintillation (sin-tÄ-lay -shÅn) (twinkling) Rapid irregular variations in the brightness of light received from celestial objects, noticeably stars, produced as the light passes through the Earth's atmosphere: irregularities in the atmosphere's refractive index occur in small mobile regions and can cause the direction of the light to change very slightly during its passage.