Image / Heintz and Kaufman 500-wattt transmitter

View source image on contributor's website.

Get Citation

Have a question about this item?

Contact Owner

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

Title: Heintz and Kaufman 500-wattt transmitter
Creator: Heintz, Ralph, Sr
Date Created and/or Issued: 1920-1929
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: This Heintz and Kaufman 500-wattt, 32.4 meter, plunger type transmitter, was designed and built by Ralph Heintz Sr. It has a wood base and cast-iron frame with water cooling, and employs two UV 240-A tubes. On the power control panel are mounted the filament and plate switches, filament voltmeter, input ammeter and high-speed keying relay. See article, "Radio Marketing for the Farmer," Radio magazine, February 1929.
Type: image
Identifier: A2F7A7F3-1309-4B79-8C71-191688336231
2003-1-120
Subject: Radio--Transmitters and transmission (LCSH)
Heintz, Ralph M., Sr

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.