Archive for date: August 15, 2008

Slow Feld Hell Examples…

August 15, 2008 | General | By: Mark VandeWettering

Hellschreiber is a method of sending text over radio. It basically is a kind of primitive fax machine: it sends each character as a 7×14 matrix of dots. If the receiver hears a signal, it plots a dot, otherwise it plots a space. Each character is scanned left to right, bottom to top, and are […]

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