File:Perforator.png
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Summary
| Description |
English: Perforator apparatus for producing punched paper tape that was used to control an automatic wireless telegraphy transmitter. This was used at the Telefunken station at Sayville, Long Island. See w:Wheatstone system. Original caption: "The perforator in which a paper strip is unrolled at any desired speed and punctured by small holes; the separation between holes representing either the dots or dashes produced by an ordinary telegraph key." |
| Date | |
| Source | (July 1913). "The High Power Telefunken Radio Station at Sayville, Long Island". Proceedings of the Institute of Radio Engineers 1 (3): 23–35. DOI:10.1109/JRPROC.1913.216587. |
| Author | Fritz Van Der Woude and Alfred E. Seelig |
Licensing
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This work is in the public domain in the United States because it was published (or registered with the U.S. Copyright Office) before January 1, 1929.
 Public domain works must be out of copyright in both the United States and in the source country of the work in order to be hosted on the Commons. If the work is not a U.S. work, the file must have an additional copyright tag indicating the copyright status in the source country.
Note: This tag should not be used for sound recordings. |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 16:10, 30 December 2019 | | 1,203 × 620 (977 KB) | Mu301 | User created page with UploadWizard |
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