The IBM Type 37 Radio Supervised Time Control Clock was likely the first semi-automatic radio controlled clocks sold commercially. They contained a 5-tube superheterodyne receiver tuned to 5 MHz capable of correcting the clock's movement every hour. One of these clocks is on display at the NIST Laboratories in Boulder, Colorado.

In this talk, Michael Lippold K7MTL, will share what he's uncovered while researching these unique devices and how they were used in the 1950's and 1960's.

October 17th, 2019 7:00 PM
Sunset Presbyterian Church
14986 NW Cornell Rd
Portland, OR 97229
United States

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