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.
Use attenuation in a sentence. Noun. (plural attenuations) 1  A gradual diminishing in the strength of something. ( 2 physics) A reduction in the level of some property with distance, especially the amplitude of a wave or the strength of a signal. ( biology) A weakening in the virulence of a pathogen or other microorganism.