crystal radios and spark gap transmitters
Professionally Built Tesla Coil With synchronous rotary spark gap | #1824602459
Rotary Spark Gap - YouTube
Two different model Murdock Rotary Spark Gaps | Spark gap, Antique radio, Vintage radio
Rotary Spark Gap Amateur-D Haller-Cunningham, Halcun; San Fr
Synchronous Rotary Spark Gap
A 1.5 Million-Volt Tesla Coil
Tesla coil help - Spark gap not arcing despite having 12 kV - Electrical Engineering Stack Exchange
Craig's Area
Rotary Spark Gap No. 442A Amateur-D Murdock, WM.J. Co.;
Rotary Spark Gaps
Rotary spark gap overview
Rotary Spark Gap - a photo on Flickriver
Rotary Spark Gap Version One
Rotary spark gap Amateur-D McIntosh Electrical Corp.; Chicag
Terry Blake Home Page
Experimental setup with pulsed-high-voltage device using mechanical... | Download Scientific Diagram
Spark-gap transmitter - Wikipedia
Rotary Spark Gap developed by Reginald Fessenden. - Science, Technology, Engineering, and Math - North Carolina Digital Collections
tesla coil project - part eight
File:Rotary spark gap 1919.jpg - Wikimedia Commons
File:Murdock 1 kW rotary gap spark transmitter 1914.jpg - Wikimedia Commons
Rotary Spark Gap by teslaextreme on DeviantArt
Rotary Spark Gap, Synchronous For Tesla Coil | #1881595680
Craig's Area
RSG
Variable Rotary Spark Gap for Tesla Coil - YouTube
