Beautiful certificate from the Radio Electric Clock Corporation issued in 1929. This historic document was printed by the Broun - Green Company and has an ornate border around it with the company name centered on the top center. This item has the signatures of the Company’s Officers and is over 80 years old.
The Radio Electric Clock was a a clock system which employs radio time signals from a government station to correct automatically an electric clock system. In the 1920, interference was the usual limitation of a system of this sort, so special emphasis has been placed upon the pulse amplifier, by means of which pulses of a periodic character are amplified with an extremely high selectivity against interference.
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