crackle
verb (used without object)
to make slight, sudden, sharp noises, rapidly repeated.
Used to describe an action that was ongoing continuously in the past up until another past event interrupted it.
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
His own radio had been crackling a call, and now this response was coming across the void.
From The Finding of Haldgren by Charles Willard Diffin