KPEN 101.3 FM
King’s Mountain Transmitter Site
Atherton, California
Circa August 1957

KPEN_Gielow-and-Dad

Via Elliott Pisor:

This was taken about August 1957, prior to the first air date of October 27, 1957, on 101.3 FM. It shows co-founder Gary Gielow standing in front of the 1800s adobe hut used as an all-in-one lobby, studio and transmitter. He is alongside his father and their 50-foot tower, topped by an Andrew 2-bay antenna, boosting the RCA one-kilowatt transmitter to 1500 watts ERP.

The hut was hauled from near sea level to the top of King’s Mountain (Highway 35, south of 92) specifically for use by KPEN, and it exists today – albeit abandoned and buried in foliage. The truck visible in the picture did the hauling.

The site and transmitter were used for 22 months, after which the station boosted to 35 KW and moved to San Bruno Mountain near San Francisco Airport. For later history, see KIOI.

See Gary Gielow’s presentation featuring the history of KPEN from his talk at CHRS Radio Central December 2014.

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