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The transmitter gallery at the preserved, historic coast radio station KPH, in Bolinas, CA, operating on all frequencies during Night of Nights in 2016. The room is full of the sound of Morse code as the operators "send the wheel," calling for traffic; each transmitter has a sidetone of a different pitch, playing through the horns on the ceiling, so that the technicians can tell if any of them are running out of specification.
Once a year, on Night of Nights, they call up all the remaining operators who worked at the station under RCA (or later, Globe Wireless), to take up the keys again, and handle traffic as they once did. They work at the receive site on Point Reyes, which was preserved when it was abandoned, as it was built on land in what eventually became Point Reyes National Seashore.
Upstairs are the KPH transmitters. The purple ones are RCA sets (with a rare restored H set, once used for commercial point-to-point SSB traffic, on the left), and the white ones are modern Henry transmitters. On the ground floor is a Press Wireless PW-15 transmitter; when it keys up, the lights in the building dim slightly as the grid voltage sags.