Please contact the contributing institution for more information regarding the copyright status of this object.
Description
Heavy wood case, painted green, with two connectors on the top of the lid. Inside, connected to the lid, are a series of heavy metal plates, which would have sat in an oil bath. A small glass window on the lid allows the user to see inside the box while the oil is hot. Interior of box is lined with sheet metal. Part of an experimental wireless spark transmitter, designed and built by Leon A. Bartholomew, 6LC, at 937 West 81st Street, Los Angeles, in 1921. According to notes on the back of a photograph of the condenser, also donated by Mr. Bartholomew, "It takes 35 gallons of transformer oil to load 2 condensers and transformer. Total load at full power 5000 watts. Thru 30 amp fuses - at 120~240 volts."
Type
image
Identifier
6A3CB3E3-E9AA-47AF-A3AD-458401080440 2003-1-1847
Subject
Radio--Equipment and supplies (LCSH) Radio--Transmitters and transmission (LCSH) Capacitors
If you're wondering about permissions and what you can do with this item, a good starting point is the "rights information" on this page. See our terms of use for more tips.
Share your story
Has Calisphere helped you advance your research, complete a project, or find something meaningful? We'd love to hear about it; please send us a message.
