electron Tube Data sheets | ||
Gecovalve documents |
(up)date | item | size |
2008-04-26 | 1938 pricelist with tube data. | 568,433 bytes |
2009-11-02 | Short data for Geco tubes. ☆Peter den Boer☆ | 177,775 bytes |
2009-11-02 | Short data for Geco tubes 1939/1940. ☆Peter den Boer☆ | 479,232 bytes |