Skip to main content

Image / Telegraph key for radio transmission

Have a question about this item?

Item information. View source record on contributor's website.

Title
Telegraph key for radio transmission
Creator
Unknown
Date Created and/or Issued
1910-1930
Contributing Institution
History San Jose Research Library
Collection
History San Jose Online Catalog
Rights Information
Please contact the contributing institution for more information regarding the copyright status of this object.
Description
Copper and brass telegraph key fitted to heavy stone base; no manufacturer. Described on the original Foothill Electronics Museum accession record as follows: "Heavy duty telegraph key for use with radio transmitter. Mounted on a marble? base. Light contacts at side, but appears it could be used to carry more current with the larger contacts underneath. The construction implies that these contacts were not merely the adjustable 'stop.' Date unknown, might be most anything before 1930."
Type
Image
Identifier
62F70141-C471-435C-A083-225636646042
2003-1-784
Subject
Radio broadcasting (LCSH)
Telegraph keys (LCSH)
Wireless telegraph (LCSH)
Radio--Transmitters and transmission (LCSH)

About the collections in Calisphere

Learn more about the collections in Calisphere. View our statement on digital primary resources.

Copyright, permissions, and use

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.

Explore related content on Calisphere: