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Motorola 2 Way Radio

In 1902, most of Bernard Stubblefield’s efforts in the development of wireless technology—which would eventually, much later, lead to the popular Motorola 2 way radio—were devoted to the construction of a transmitter. Next up, he would occupy himself with the completion of an improved receiver which had been partially constructed. It would, when perfected, bring up the sounds to any desired pitch.

Facts about a Motorola 2 Way Radio Type of Device

Stubblefield’s initial objective, born out in a patent application, was that his device, like a Motorola 2 way radio today, would be useful for “securing telephonic communications between moving vehicles and way stations." In fact, the diagrams attached to the patent application suggested that the transmissions would take place to and from trains, boats, and horse-drawn wagons.

Additional Information about a Motorola 2 Way Radio Type of Device

Stubblefield’s technological approach was far different than what is in use today—voice-modulated, continuous high-frequency waves for a Motorola 2 way radio type device. Stubblefield’s device reportedly worked by audio frequency induction. It was composed of a system of wires suspended between metal rods, with the transmitter placed on a train carriage or boat. When the vehicle or vessel neared, a signal was sent through the air to the telephone using magnetic fields. It could be heard at the other end of the wire through another device.