1915 Alaska Radio Expedition??

Coherer, 1902

DeForest 3-Step Audio Frequency Amplifier

DeForest 4-Slide Tuner, 1904

Wireless Telegraph Installation Shore Station

First Fessenden Arc, Used 1909-1910, and Mercury Interrupter

Lowenstein Tubular 500 Cycle Spark Gap, 1913

Marconi Magnetic Detector, 1907

Official US Navy Photo, North Head, WA Apparatus

DeForest-Shoemaker Oscillation Transformer and Spark Gap, Used by Navy 1904-1905

Marine Receiving Table, RM6P 5260 NPG Control, San Francisco, 1927

Official US Navy Photo, Radio Eureka, CA, 1913

Telefunken Receiver, 1912, the First to use Litz Wire and Bank Winding

Radio Room, USS Saturn, Mare Island, CA, 11 May 1916