The KPH receiving station sits at the end of a cypress ‘tree tunnel’ along on Sir Francis Drake Boulevard on July 12, 2023 in Point Reyes National Seashore, California.

Maritime Radio Historical Society member Roy Henrichs checks in with fellow members at the transmission site outside the KPH receiving station on July 12, 2023 in Point Reyes National Seashore, California. Both Harris and Heinrichs drove out to the site for the annual ‘Night of Nights.’ Every year, the self-proclaimed ‘radio squirrels’ gather to send a commemorative transmission to remember the last commercial Morse code signal in the United States. Morse code and maritime radio enthusiasts from around the world tune in to listen as KPH, a historic radio station, returns to the airwaves for ‘Night of Nights.’

Maritime Radio Historical Society members greet Luis Membrila Martinez, center, at the KPH transmitter station on July 12, 2023 in Point Reyes National Seashore, California. Martinez is a fan of ham radio and wanted to learn more about the self-proclaimed ‘radio-squirrels’ so his mother drove him out to the historic radio site.

Maritime Radio Historical Society member, Robert Harris uses a morse code ‘bug’, which produces the dits and dahs sound sequence, on the ‘Night of Nights’ at the KPH receiving station on July 12, 2023 in Point Reyes National Seashore, California. Every year, the self-proclaimed ‘radio squirrels’ gather to send a commemorative transmission to remember the last commercial Morse code signal in the United States. Morse code and maritime radio enthusiasts from around the world tune in to listen as KPH, a historic radio station, returns to the airwaves for ‘Night of Nights.’

Maritime Radio Historical Society member, Robert Harris, concentrates as he sends morse code signals on the ‘Night of Nights’ at the KPH receiving station on July 12, 2023 in Point Reyes National Seashore, California. Every year, the self-proclaimed ‘radio squirrels’ gather to send a commemorative transmission to remember the last commercial Morse code signal in the United States. Morse code and maritime radio enthusiasts from around the world tune in to listen as KPH, a historic radio station, returns to the airwaves for ‘Night of Nights.’

Transmitter and maintenance logs were left behind when the KPH transmitter site was abandoned years ago on July 11, 2023 in Point Reyes National Seashore near Bolinas, California.

Maritime Radio Historical Society member Paul Shinn makes precarious adjustments to get an antenna online before the annual ‘Night of Nights' event, which features a commemorative transmission to remember the last commercial morse-code signal in the United States.

Maritime Radio Historical Society member, Michael Payne poses for the camera on the ‘Night of Nights’ at the KPH receiving station on July 12, 2023 in Point Reyes National Seashore, California. Every year, the self-proclaimed ‘radio squirrels’ gather to send a commemorative transmission to remember the last commercial Morse code signal in the United States. Morse code and maritime radio enthusiasts from around the world tune in to listen as KPH, a historic radio station, returns to the airwaves for ‘Night of Nights.’

Old manuals and schematics were left behind when the KPH transmitter site closed and members of Maritime Radio Historical Society consult them often to troubleshoot on July 11, 2023 in Point Reyes National Seashore near Bolinas, California. Most of antiquated commercial radio machinery is no longer in use and the group often sources parts from eBay.

Maritime Radio Historical Society Founder, Tom Horsfall is skeptical of the photographer as she attempts a portrait in a spare equipment room on the commemorative 'Night of Nights' at the KPH historic transmitter station on July 12, 2024.

Maritime Radio Historical Society members Robert Harris, left, and Roy Henrichs, right, consult on radio antenna repair work outside the KPH receiving station on July 12, 2023 in Point Reyes National Seashore, California. Both Harris and Heinrichs drove out to the site for the annual ‘Night of Nights.’ Every year, the self-proclaimed ‘radio squirrels’ gather to send a commemorative transmission to remember the last commercial Morse code signal in the United States. Morse code and maritime radio enthusiasts from around the world tune in to listen as KPH, a historic radio station, returns to the airwaves for ‘Night of Nights.’

Maritime Radio Historical Society members greet Luis Membrila Martinez, center, at the KPH transmitter station on July 12, 2023 in Point Reyes National Seashore, California. Martinez is a fan of ham radio and wanted to learn more about the self-proclaimed ‘Radio-Squirrels’ so his mother drove him out to the historic radio site.