A Slotted Crystal Needed for Transmissions! Frequencies!

Midday heat baked the creosote out of the telephone pole. At my feet, half-buried in dry gravel beside the grounded copper line, something gave off a steady, amber refraction. I knelt, sweeping the grit aside with the tip of my boot. It was a shard of thick amber bottle glass, curved and intact along one fluted edge. A natural acoustic amplifier. Bracing the curved glass shard against the insulated copper lead on the bare timber, I leaned in. The ambient hiss sharpened into distinct, rhythmic clicks. Signals from further up the grid. The relay now has tone.🔥🔥🔥🔥😎