Image / Eimac 4X250 power tetrode cutaway

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: Eimac 4X250 power tetrode cutaway
Creator: Eitel-McCullough, Inc. (San Carlos, Calif.)
Date Created and/or Issued: 1955-1965
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: Cutaway of a 4X250 power tetrode, likely manufactured by Eitel-McCullough, encased in amber resin/plastic. The 4X250 line of UHF tetrodes are ceramic with glass base, 9-pin special base, forced-air-cooled, with brazed external anode.
Type: Image
Identifier: 48FFFDE5-3B0E-4AC9-B4C0-808110030210
2003-1-825
Subject: Eitel-McCullough, Inc
Vacuum-tubes
Nineteen fifties
Nineteen sixties
Tetrodes

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.