Regeneration Demo Videos

Sarnoff's Head

Radio in 2014

Clifden Spark 1914

Alternator Nauen, Germany CW 1914

Poulsen Arc San Francisco 1914

 

 

The Reigning Champion: Marconi Type 101 Receiver A passive receiver (crystal-set) with no amplification.
	The Contender: The Armstrong Regenerative Receiver Uses the DeForest "Audion" vacuum tube for amplification. Armstrong's feedback circuit greatly increases Audion performance, and allows reception of continuous-wave signals (CW) as well as spark. This is the only known photo, and likely differs from the device used at Belmar.
Our Stand-in for the 2014 Demo: Wireless Specialty Apparatus Co. IP-501 - Navy Receiver Designed in 1918 An Armstrong licensed regenerative receiver using a slightly more modern tube. It can also be used as a crystal set with a circuit similar to the Marconi 101.