Image:RadioWaves.jpg
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[edit] Summary
Copied from Radio Telephony for Amateurs by Ballantine 1922.
[edit] Licensing
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This image is in the public domain in the United States. In most cases, this means that it was first published prior to January 1, 1923 (see the template documentation for more cases). Other jurisdictions may have other rules, and this image might not be in the public domain outside the United States. See Wikipedia:Public domain and Wikipedia:Copyrights for more details. |  |
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| Date/Time | Dimensions | User | Comment | |
|---|---|---|---|---|
| current | 05:44, 20 December 2006 | 929×585 (140 KB) | JA.Davidson (Talk | contribs) | (Copied from Radio Telephony for Amateurs by Ballantine 1922. ) |
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